128 results on '"climate events"'
Search Results
2. The One Health aspect of climate events with impact on foodborne pathogens transmission
- Author
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Igori Balta, Joanne Lemon, Ciara Murnane, Ioan Pet, Teodor Vintila, David McCleery, Todd Callaway, Alastair Douglas, Lavinia Stef, and Nicolae Corcionivoschi
- Subjects
One Health ,Foodborne pathogens ,Climate change ,Climate events ,Medicine (General) ,R5-920 - Abstract
The ongoing effects of climate change have exacerbated two significant challenges to global populations: the transmission of foodborne pathogens and antimicrobial resistance (AMR) through the food chain. Using the latest available scientific information this review explores how climate-related factors such as rainfall, floods, storms, hurricanes, cyclones, dust, temperature and humidity impact the spread of the foodborne pathogens Salmonella, E. coli, Campylobacter, Vibrio, Listeria, and Staphylococcus aureus. We explore the complex dynamics between environmental changes and the heightened risk of foodborne diseases, analysing the contribution of wildlife, insects and contaminated environments in the proliferation of AMR and climate change. This review paper combines a thorough analysis of current literature with a discussion on findings from a wide variety of studies to provide a comprehensive overview of how climatic factors contribute to the survival, persistence and transmission of bacterial pathogens in the food chain. In addition, we discuss the necessity for effective mitigation strategies and policies. By providing insights into the interrelationships between climate change and food safety, this review hopes to inform future research and policy development to promote safer and more sustainable food systems and further integration within the One Health approach.
- Published
- 2024
- Full Text
- View/download PDF
3. High tide, low price? Flooding alerts and hotel prices in Venice.
- Author
-
Angelini, Francesco, Figini, Paolo, and Leoni, Veronica
- Subjects
PRICES ,REGRESSION discontinuity design ,COST benefit analysis ,CLIMATE extremes ,PRICE sensitivity - Abstract
This research explores the effects of High Tide alerts on hotel prices in Venice, a city that is vulnerable to the impacts of extreme climate events due to its fragile ecosystem and a long history of floods in the city center. By analyzing and combining price data from Booking.com with publicly available information on tides and weather, this study uses regression discontinuity design to test for changes in hotel prices when tide levels reach a critical threshold. The results offer insights into the sensitivity of hotel prices to weather alerts and provide valuable information on the potential impact of climate change on Venice's tourism-driven economy, with implications for the cost–benefit analysis of activating protective barriers for lagoon protection. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
4. Late Pleistocene to Middle Holocene record of sedimentation and carbonate content in the Zervynos paleolake-dune complex, Lithuania
- Author
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Liudas Daumantas, Petras Šinkūnas, Eugenija Rudnickaitė, Nikita Dobrotin, Dalia Kisielienė, and Andrej Spiridonov
- Subjects
european sand belt ,sand ,carbonates ,plant macro-remains ,climate events ,bayesian inference. ,Geology ,QE1-996.5 - Abstract
The Late Pleistocene to the Holocene is a time interval that covers the climate transition from a cold to a warm interglacial regime. In the Baltic region, many studies have focused on estimating environmental responses to climatic forcing using palynological and stratigraphic proxies of glacial and periglacial settings. Herein we describe the mixed lacustrine-aeolian succession of the Zervynos-2 section (south-eastern Lithuania), located in the north-eastern part of the European Sand Belt. The succession and the sedimentation styles were characterized by granulometric parameters, structural features, dolomite/calcite ratio, and paleobotanical macro-remains. Our analyses revealed that the Zervynos-2 paleolake formed on the sandur (outwash) plain during the final stage of the Pleistocene. The onset of lake sedimentation was caused by sudden submergence of a sandbody-constrained paleovalley. Carbonate ratios and macro-remains from the lower gyttja material showed the presence of substantial millennial-scale oscillations, which suggests a delayed response to the isotopically derived paleotemperatures. The transition to the fast sand sedimentation started approximately in the Middle Holocene and is interpreted here as being caused by warming and drying of the climate in the Baltic region. The upper Holocene portion of the section represents the transition to exclusively aeolian sedimentation with lower accumulation rates that are likely related to a long-term cooling trend. The obtained results support the conjecture that there is a direct but delayed positive correlation between dolomite and calcite ratios in lake sediments and the climatic signal in the Greenland GISP2 record.
- Published
- 2022
- Full Text
- View/download PDF
5. Ecosystem Resistance and Resilience after Dry and Wet Events across Central Asia Based on Remote Sensing Data.
- Author
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Zou, Jie, Ding, Jianli, Huang, Shuai, and Liu, Bohua
- Subjects
- *
SHRUBLANDS , *DROUGHTS , *MODIS (Spectroradiometer) , *ECOLOGICAL resilience , *CLIMATE change forecasts , *EXTREME weather , *REMOTE sensing - Abstract
Climate change forecasts indicate that the frequency and intensity of extreme climate events will increase in the future; these changes will have important effects on ecosystem stability and function. An important arid region of the world, Central Asia has ecosystems that are extremely vulnerable to extreme weather events. However, few studies have investigated the resistance and resilience of this region's ecosystems to extreme weather events. In this study, first, the extreme drought/wet threshold was calculated based on the 113-year (1901–2013) standardized precipitation–evapotranspiration index (SPEI); second, moderate resolution imaging spectroradiometer (MODIS) remote sensing data were applied to calculate ecosystem water use efficiency (WUE) and quantify ecosystem resistance and resilience after different extreme climate events; and finally, differences in the changes of various ecosystem types before and after climate events were assessed. The results showed the following: (1) The average SPEI was 0.073, and the thresholds of extreme wetness and drought were 0.91 and −0.67, respectively. Central Asia experienced extreme wet periods in 2002 and 2003 and a drought period in 2008. (2) Suitable wetness levels can increase the resistance of an ecosystem; however, continuous wetness reduces ecosystem resistance, as does drought. Wet areas had strong resilience after wet events, and arid areas had strong resilience after drought events. (3) During both wet and drought years, the transition between shrubland and grassland caused changes in ecosystem resistance and resilience. These findings are important for understanding the impact of future climate change on ecosystem stability. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
6. Reliability-based optimization in climate-adaptive design of embedded footing.
- Author
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Mahmoudabadi, Vahidreza and Ravichandran, Nadarajah
- Subjects
OPTIMIZATION algorithms ,CLIMATE extremes ,BEARING capacity of soils ,WATERLOGGING (Soils) ,SOIL mechanics ,GENETIC algorithms ,CONSTRUCTION costs - Abstract
This paper presents a quantitative framework to optimise embedded footing performance subjected to extreme historical climate events with respect to the uncertainties associated with site-specific soil and climatic parameters. The proposed framework is developed based on partially saturated soil mechanics principles in conjunction with a multi-objective optimisation algorithm called Non-dominated Sorting Genetic Algorithm (NSGA-II) to develop a robust optimised design procedure. The proposed method was applied to two semi-arid climate sites, Riverside and Victorville, both situated in California, United States. The results show that the proposed method generally improves the embedded footing design compared to conventional methods in terms of cost and performance. Based on the findings, under the extreme climate conditions, the proposed method estimates the average soil degree of saturation within the footing influence zone between 52% and 95%, with a mean value of 63.1% for the Victorville site, and 57% and 90% with a mean value of 81.6% for the site in Riverside. It is also found that the optimal design from the proposed method shows a lower total construction cost, 44% and 19%, for the Victorville and Riverside sites, respectively, compared to the ones designed by the conventional methods. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
7. Effects of Climate Events on Abundance and Distribution of Major Commercial Fishes in the Beibu Gulf, South China Sea.
- Author
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Hong, Xiaofan, Zhang, Kui, Li, Jiajun, Xu, Youwei, Sun, Mingshuai, Wang, Yuezhong, Xu, Shannan, Cai, Yancong, Qiu, Yongsong, and Chen, Zuozhi
- Subjects
- *
FISHERIES , *WINTER , *FISH populations , *SEAWATER salinity , *GEOGRAPHICAL distribution of fishes - Abstract
Highlights: What are the main findings? The abundance of most of fish stocks in the Beibu Gulf continued to decline over the last 15 years. What is the implication of the main finding? Environmental variations caused by climate events can episodically enhance the abundance of certain fish stocks. Warming may be the reason of northward shifts in distribution of most fishes. Improving prediction of ecological responses to climate variability requires understanding how local fish population dynamics are impacted by climate events. The present study was conducted in the Beibu Gulf of the northwestern South China Sea where the fisheries are characterized by high ecological and commercial value. We evaluated the relationship between major commercial fish population dynamics (abundance and distribution) and climate periods, using survey data from 2006–2020. The analysis using random forest and GAM models show that climate events are not the best predictors for the variations of fish abundance, because abundance of most fish stocks decreases significantly with the year, and the increasing fishing pressure over time can better explain the overall downward trend in fishery stocks. However, environmental variables that correlate significantly with interannual variation in ONI may impact fish abundance in short terms. Our research suggests that climate events leading to higher surface seawater salinity in winter favors pelagic fishes by improving habitat availability, and higher near-surface chlorophyll-α concentration during La Niña events provides better food condition for overwintering fish. In addition, there is no clear evidence that climatic events have a significant impact on gravity center of fish distribution, whereas climate change has caused most fishes to move to cooler coastal waters in the north. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
8. Eliciting indigenous knowledge to predict climate events for the food security of agro-pastoral households in North Benin.
- Author
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Egah, Janvier, Yegbemey, Rosaine N., Idrissou, Fadilath Abikè, and Baco, Mohamed Nasser
- Subjects
TRADITIONAL knowledge ,DROUGHTS ,FOOD security ,DISCOURSE analysis ,SNOWBALL sampling ,DESCRIPTIVE statistics ,PASTORAL societies ,MILITARY dependents - Abstract
Populations are subjected to climatic uncertainties, the predictions of which are major challenges for the scientific community. This study analyzes indigenous climate event prediction and adaptation based on indigenous knowledge in North Benin. A sample of 80 holders of indigenous knowledge of prediction of climate events was selected using snowball sampling in the district of Gogonou. Data were collected during semi-structured interviews with the indigenous knowledge holders. Data included the profile of the knowledge holders, climate events and their prediction signs, and the planned responses in the face of climate events. Data were analyzed using discourse analysis and descriptive statistics. The results showed that the holders of indigenous knowledge of prediction of climate events are agropastoralists and some of their wives. They are over 60 years old and rooted in traditional religion. Climate events predicted were floods, pockets of drought, early cessation of rains, and invasion of fields by caterpillars. These climate events are predicted from animal, vegetable, and nature behaviors. The responses developed in the face of climate events are mainly the relocation of fields to firm land, the use of drought-tolerant varieties, the relocation of planting periods, and the planning of the suspension of children's schooling for spreading and planting operations. These findings demonstrate the necessity for policymakers to consider the value of indigenous knowledge to reduce the eects of climate change. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
9. A climate index collection based on model data.
- Author
-
Landt-Hayen, Marco, Rath, Willi, Wahl, Sebastian, Niebaum, Nils, Claus, Martin, and Kröger, Peer
- Subjects
MACHINE learning ,DEEP learning ,AUTOMATIC speech recognition ,DATA science ,BENCHMARKING (Management) - Abstract
Machine learning (ML) and in particular deep learning (DL) methods push state-of-the-art solutions for many hard problems, for example, image classification, speech recognition, or time series forecasting. In the domain of climate science, ML and DL are known to be effective for identifying causally linked modes of climate variability as key to understand the climate system and to improve the predictive skills of forecast systems. To attribute climate events in a data-driven way, we need sufficient training data, which is often limited for real-world measurements. The data science community provides standard data sets for many applications. As a new data set, we introduce a consistent and comprehensive collection of climate indices typically used to describe Earth System dynamics. Therefore, we use 1000-year control simulations from Earth System Models. The data set is provided as an open-source framework that can be extended and customized to individual needs. It allows users to develop new ML methodologies and to compare results to existing methods and models as benchmark. For example, we use the data set to predict rainfall in the African Sahel region and El Niño Southern Oscillation with various ML models. Our aim is to build a bridge between the data science community and researchers and practitioners from the domain of climate science to jointly improve our understanding of the climate system. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
10. Late Pleistocene to Middle Holocene record of sedimentation and carbonate content in the Zervynos paleolake-dune complex, Lithuania.
- Author
-
Daumantasa, Liudas, Šinkūnasa, Petras, Rudnickaitė, Eugenija, Dobrotin, Nikita, Kisielienė, Dalia, and Spiridonov, Andrej
- Subjects
- *
SEDIMENTATION & deposition , *HOLOCENE Epoch , *PLEISTOCENE Epoch , *LAKE sediments , *DOLOMITE , *CALCITE , *CARBONATES - Abstract
The Late Pleistocene to the Holocene is a time interval that covers the climate transition from a cold to a warm interglacial regime. In the Baltic region, many studies have focused on estimating environmental responses to climatic forcing using palynological and stratigraphic proxies of glacial and periglacial settings. Herein we describe the mixed lacustrine-aeolian succession of the Zervynos-2 section (south-eastern Lithuania), located in the north-eastern part of the European Sand Belt. The succession and the sedimentation styles were characterized by granulometric parameters, structural features, dolomite/calcite ratio, and paleobotanical macro-remains. Our analyses revealed that the Zervynos-2 paleolake formed on the sandur (outwash) plain during the final stage of the Pleistocene. The onset of lake sedimentation was caused by sudden submergence of a sandbody-constrained paleovalley. Carbonate ratios and macro-remains from the lower gyttja material showed the presence of substantial millennial-scale oscillations, which suggests a delayed response to the isotopically derived paleotemperatures. The transition to the fast sand sedimentation started approximately in the Middle Holocene and is interpreted here as being caused by warming and drying of the climate in the Baltic region. The upper Holocene portion of the section represents the transition to exclusively aeolian sedimentation with lower accumulation rates that are likely related to a long-term cooling trend. The obtained results support the conjecture that there is a direct but delayed positive correlation between dolomite and calcite ratios in lake sediments and the climatic signal in the Greenland GISP2 record. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
11. A climate index collection based on model data
- Author
-
Marco Landt-Hayen, Willi Rath, Sebastian Wahl, Nils Niebaum, Martin Claus, and Peer Kröger
- Subjects
Climate events ,data mining ,deep learning ,machine learning ,time series forecasting ,Environmental sciences ,GE1-350 ,Electronic computers. Computer science ,QA75.5-76.95 - Abstract
Machine learning (ML) and in particular deep learning (DL) methods push state-of-the-art solutions for many hard problems, for example, image classification, speech recognition, or time series forecasting. In the domain of climate science, ML and DL are known to be effective for identifying causally linked modes of climate variability as key to understand the climate system and to improve the predictive skills of forecast systems. To attribute climate events in a data-driven way, we need sufficient training data, which is often limited for real-world measurements. The data science community provides standard data sets for many applications. As a new data set, we introduce a consistent and comprehensive collection of climate indices typically used to describe Earth System dynamics. Therefore, we use 1000-year control simulations from Earth System Models. The data set is provided as an open-source framework that can be extended and customized to individual needs. It allows users to develop new ML methodologies and to compare results to existing methods and models as benchmark. For example, we use the data set to predict rainfall in the African Sahel region and El Niño Southern Oscillation with various ML models. Our aim is to build a bridge between the data science community and researchers and practitioners from the domain of climate science to jointly improve our understanding of the climate system.
- Published
- 2023
- Full Text
- View/download PDF
12. Ecosystem Resistance and Resilience after Dry and Wet Events across Central Asia Based on Remote Sensing Data
- Author
-
Jie Zou, Jianli Ding, Shuai Huang, and Bohua Liu
- Subjects
climate events ,Central Asia ,water use efficiency ,resistance ,resilience ,Science - Abstract
Climate change forecasts indicate that the frequency and intensity of extreme climate events will increase in the future; these changes will have important effects on ecosystem stability and function. An important arid region of the world, Central Asia has ecosystems that are extremely vulnerable to extreme weather events. However, few studies have investigated the resistance and resilience of this region’s ecosystems to extreme weather events. In this study, first, the extreme drought/wet threshold was calculated based on the 113-year (1901–2013) standardized precipitation–evapotranspiration index (SPEI); second, moderate resolution imaging spectroradiometer (MODIS) remote sensing data were applied to calculate ecosystem water use efficiency (WUE) and quantify ecosystem resistance and resilience after different extreme climate events; and finally, differences in the changes of various ecosystem types before and after climate events were assessed. The results showed the following: (1) The average SPEI was 0.073, and the thresholds of extreme wetness and drought were 0.91 and −0.67, respectively. Central Asia experienced extreme wet periods in 2002 and 2003 and a drought period in 2008. (2) Suitable wetness levels can increase the resistance of an ecosystem; however, continuous wetness reduces ecosystem resistance, as does drought. Wet areas had strong resilience after wet events, and arid areas had strong resilience after drought events. (3) During both wet and drought years, the transition between shrubland and grassland caused changes in ecosystem resistance and resilience. These findings are important for understanding the impact of future climate change on ecosystem stability.
- Published
- 2023
- Full Text
- View/download PDF
13. Effects of Climate Events on Abundance and Distribution of Major Commercial Fishes in the Beibu Gulf, South China Sea
- Author
-
Xiaofan Hong, Kui Zhang, Jiajun Li, Youwei Xu, Mingshuai Sun, Yuezhong Wang, Shannan Xu, Yancong Cai, Yongsong Qiu, and Zuozhi Chen
- Subjects
Beibu Gulf ,major commercial fish ,abundance ,distribution ,climate events ,Biology (General) ,QH301-705.5 - Abstract
Improving prediction of ecological responses to climate variability requires understanding how local fish population dynamics are impacted by climate events. The present study was conducted in the Beibu Gulf of the northwestern South China Sea where the fisheries are characterized by high ecological and commercial value. We evaluated the relationship between major commercial fish population dynamics (abundance and distribution) and climate periods, using survey data from 2006–2020. The analysis using random forest and GAM models show that climate events are not the best predictors for the variations of fish abundance, because abundance of most fish stocks decreases significantly with the year, and the increasing fishing pressure over time can better explain the overall downward trend in fishery stocks. However, environmental variables that correlate significantly with interannual variation in ONI may impact fish abundance in short terms. Our research suggests that climate events leading to higher surface seawater salinity in winter favors pelagic fishes by improving habitat availability, and higher near-surface chlorophyll-α concentration during La Niña events provides better food condition for overwintering fish. In addition, there is no clear evidence that climatic events have a significant impact on gravity center of fish distribution, whereas climate change has caused most fishes to move to cooler coastal waters in the north.
- Published
- 2023
- Full Text
- View/download PDF
14. Climate events and the role of adaptive capacity for (im-)mobility.
- Author
-
Koubi, Vally, Schaffer, Lena, Spilker, Gabriele, and Böhmelt, Tobias
- Subjects
- *
ECONOMICS education , *HIGHER education , *OCCUPATIONAL mobility , *CLIMATE change - Abstract
The study examines the relationship between sudden- and gradual-onset climate events and migration, hypothesizing that this relationship is mediated by the adaptive capacity of affected individuals. We use survey data from regions of Cambodia, Nicaragua, Peru, Uganda, and Vietnam that were affected by both types of events with representative samples of non-migrant residents and referral samples of migrants. Although some patterns are country-specific, the general findings indicate that less educated and lower-income people are less likely to migrate after exposure to sudden-onset climate events compared to their counterparts with higher levels of education and economic resources. These results caution against sweeping predictions that future climate-related events will be accompanied by widespread migration. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
15. Marginal Voices, Resilient Acts: Urban Marginality and Responses to Climate-Related Events in Lilongwe City Informal Settlements.
- Author
-
Makuwira, Jonathan
- Subjects
- *
SOCIAL marginality , *SOCIOECONOMIC status , *SOCIAL change , *CITIES & towns , *SOCIAL policy - Abstract
Urban informal settlements have, over the years, been centres of conflicting development debates, yet, for people with low socio-economic status, these are areas of opportunities. However, the "peripheral" nature of these locations has far-reaching implications on how people in these areas participate in decision-making processes that affect them. Lately, the effects of climate-related events have also added another layer of socio-economic, political, and environmental challenge to the dynamics of life in the marginal areas of the urban setting. The purpose of this paper is to critically examine how people in marginal informal settlements of Lilongwe City respond to climate-related events and interact with the wider ecosystem of development stakeholders. The major thesis of the paper is that while critical policymakers ignore these peripheral voices in the provision of basic services, an enhanced support to these informal settlements can prove positive if efforts are harnessed to mitigate the effects of climate-related events and urban marginality and amplify marginal voices to change social policies for the good of all. This paper uses the case of Lilongwe City where three informal settlements of Mtandire, Kaliyeka, and Kawale form part of the study. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
16. Do changes in the water regime determine the abundance of the copepod trophic group in a Neotropical floodplain?
- Author
-
Lenin Medeiros de Almeida Lino, Tatiane Mantovano, Vanessa G. Tibúrcio, and Fábio Amodêo Lansac-Tôha
- Subjects
climate events ,microcrustaceans ,trophic guilds ,floodplain ,Ecology ,QH540-549.5 - Abstract
Abstract Aim Our study evaluated the effects of extreme weather events and environmental conditions on the trophic groups of copepods (herbivores and omnivores) in the upper Paraná River floodplain. Methods The zooplankton were collected and Copepods and Rotifers were analyzed in nine environments of the upper Paraná River floodplain during 2000 and 2010, during which time the La Niña (drought) and El Niño (flood) climatic events occurred, respectively. Results The results suggest that in periods of extreme drought productivity-related variables act as determining forces on abundance of copepod trophic groups due to the contraction of aquatic ecosystems. Although the abundance of trophic groups is associated with system productivity, the responses between them differ, since herbivore abundance was associated with chlorophyll-a and total phosphorus and omnivores with rotifer abundance. In extreme flood (El Niño), no significant relationship was found between environmental variables and any trophic group. Conclusions In general, it is believed that in periods of extreme drought the variables associated with productivity act as determining forces on the abundance of trophic groups of copepods due to the contraction of aquatic ecosystems. According to the results found, it is suggested that other works be carried out with a greater number of extreme events to corroborate our results and, and also to extrapolate to other aquatic communities.
- Published
- 2021
- Full Text
- View/download PDF
17. Assessment of seasonal and spatial variations of biochemical markers in Corydalus sp. (Megaloptera: Corydalidae), a non-conventional biomonitor, in a mountain cloud forest in Mexico.
- Author
-
Rico-Sánchez, Axel Eduardo, Rodríguez-Romero, Alexis Joseph, Sedeño-Díaz, Jacinto Elías, and López-López, Eugenia
- Subjects
BIOCHEMICAL variation ,BIOMARKERS ,CLOUD forests ,MOUNTAIN forests ,SPATIAL variation ,GLUTATHIONE peroxidase - Abstract
Rivers are critical ecosystems for protecting and harboring high biodiversity. Tropical rivers particularly are unique for facing extreme climatic events under the current accelerated disruption from human activities. The Bobos-Nautla river basin is exposed to climatic events and disturbances from anthropogenic impacts that stress aquatic organisms. We assessed the health condition of this river system using a non-conventional biomonitor, Corydalus sp., with a set of early-warning biomarkers including lipid peroxidation levels (LPO) and antioxidant activity, superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GPx), and the neurotransmitter acetylcholinesterase (AChE) considering their spatial and temporal variations. Biomarkers and water quality parameters were analyzed, and the integrated biomarker response (IBR) was assessed as a stress index. Biomarkers showed no significant spatial differences; however, a high-stress period during the rainy season was detected, evidenced by the highest LPO levels; this period is related to the leaching of allochthonous materials from agricultural and urban zones. The peak IBR value during the rainy season confirmed the seasonality of biomarkers. A slight increase in IBR was recorded in lowlands, seemingly associated with agricultural land and human settlements. A principal component analysis showed nutrient enrichment during the rainy season and depletion during the cold-dry season, together with a peak activity of antioxidant enzymes. These results highlight the importance of climatic events such as the rainy season on the health condition of Corydalus sp., which is highly sensitive to the complex mixtures of pollutants that enter the waterbody during extreme climatic events, promoting oxidative stress. Our results also showed the ability of Corydalus sp. to recover and return to a basal level. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
18. The effect of climate pacts on the stock market performance of listed firms in Turkey.
- Author
-
Pandey, Dharen Kumar, Ananda, S., Basma, Henchiri, and Kumari, Vineeta
- Abstract
This study employs the event study method on the daily closing prices of 385 listed firms in Turkey from December 2020 to December 2022 to examine the market reactions to two significant climate-related events: the Glasgow Climate Pact (GCP) and the Sharm el-Sheikh Implementation Plan (SSIP). The GCP event triggered predominantly adverse market reactions, with significant and negative abnormal returns observed before and after the event and an adverse event day return. Conversely, the SSIP event generated a mixed market response, characterized by significant negative abnormal returns before the event and significant positive abnormal returns after the event. Additionally, the energy sector firms have been vulnerable to the SSIP, given their declining returns, while other sectors experienced significant positive returns. The cross-sectional regression analysis highlights the impact of firm-level characteristics on abnormal returns. For the GCP event, firm leverage, firm size, book-to-market ratio, and past returns exhibit significant associations with abnormal returns during different periods. Similarly, for the SSIP event, firm size, book-to-market ratio, past returns, and past volatility demonstrate significant relationships with abnormal returns. The findings suggest that firms should align their strategies with climate goals and capitalize on emerging clean energy and sustainability opportunities to maintain share prices. Investors must carefully evaluate climate-related events’ impact and consider firm-level characteristics when making investment decisions. This study contributes to understanding market reactions to climate events and provides insights for firms and investors in navigating the evolving landscape of climate change. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
19. Climate Events and Cycles During the Last Glacial–Interglacial Transition
- Author
-
Eun Hee Lee, Dae-Young Lee, and Mi-Young Park
- Subjects
Climate events ,Bølling-Allerød ,Younger Dryas ,de Vries cycle ,Eddy cycle ,Astronomy ,QB1-991 - Abstract
During the last glacial–interglacial transition, there were multiple intense climatic events such as the Bølling–Allerød warming and Younger Dryas cooling. These events show abrupt and rapid climatic changes. In this study, the climate events and cycles during this interval are examined through wavelet analysis of Arctic and Antarctic ice-core 18O and tropical marine 14C records. The results show that periods of ~1383–1402, ~1029–1043, ~726–736, ~441–497 and ~202–247 years are dominant in the Arctic region, whereas periods of ~1480, ~765, ~518, ~311, and ~207 years are prominent in the Antarctic TALDICE. In addition, cycles of ~1019, ~515, and ~209 years are distinct in the tropical region. Among these variations, the de Vries cycle of ~202–209 years, correlated with variations in solar activity, was detected globally. In particular, this cycle shows a strong signal in the Antarctic between about 13,000 and 10,500 yr before present (BP). In contrast, the Eddy cycle of ~1019–1043 years was prominent in Greenland and the tropical region, but was not detected in the Antarctic TALDICE records. Instead, these records showed that the Heinrich cycle of ~1480 year was very strong and significant throughout the last glacial–interglacial interval.
- Published
- 2017
- Full Text
- View/download PDF
20. Ecosystem Resistance and Resilience after Dry and Wet Events across Central Asia Based on Remote Sensing Data
- Author
-
Liu, Jie Zou, Jianli Ding, Shuai Huang, and Bohua
- Subjects
climate events ,Central Asia ,water use efficiency ,resistance ,resilience - Abstract
Climate change forecasts indicate that the frequency and intensity of extreme climate events will increase in the future; these changes will have important effects on ecosystem stability and function. An important arid region of the world, Central Asia has ecosystems that are extremely vulnerable to extreme weather events. However, few studies have investigated the resistance and resilience of this region’s ecosystems to extreme weather events. In this study, first, the extreme drought/wet threshold was calculated based on the 113-year (1901–2013) standardized precipitation–evapotranspiration index (SPEI); second, moderate resolution imaging spectroradiometer (MODIS) remote sensing data were applied to calculate ecosystem water use efficiency (WUE) and quantify ecosystem resistance and resilience after different extreme climate events; and finally, differences in the changes of various ecosystem types before and after climate events were assessed. The results showed the following: (1) The average SPEI was 0.073, and the thresholds of extreme wetness and drought were 0.91 and −0.67, respectively. Central Asia experienced extreme wet periods in 2002 and 2003 and a drought period in 2008. (2) Suitable wetness levels can increase the resistance of an ecosystem; however, continuous wetness reduces ecosystem resistance, as does drought. Wet areas had strong resilience after wet events, and arid areas had strong resilience after drought events. (3) During both wet and drought years, the transition between shrubland and grassland caused changes in ecosystem resistance and resilience. These findings are important for understanding the impact of future climate change on ecosystem stability.
- Published
- 2023
- Full Text
- View/download PDF
21. Climate and Processing Effects on Tea (Camellia sinensis L. Kuntze) Metabolome: Accurate Profiling and Fingerprinting by Comprehensive Two-Dimensional Gas Chromatography/Time-of-Flight Mass Spectrometry
- Author
-
Federico Stilo, Giulia Tredici, Carlo Bicchi, Albert Robbat, Joshua Morimoto, and Chiara Cordero
- Subjects
comprehensive two-dimensional gas chromatography ,time-of-flight mass spectrometry ,untargeted-targeted UT fingerprinting ,tea metabolome ,tea processing ,climate events ,Organic chemistry ,QD241-441 - Abstract
This study applied an untargeted–targeted (UT) fingerprinting approach, based on comprehensive two-dimensional gas chromatography-time-of-flight mass spectrometry (GC×GC-TOF MS), to assess the effects of rainfall and temperature (both seasonal and elevational) on the tea metabolome. By this strategy, the same compound found in multiple samples need only to be identified once, since chromatograms and mass spectral features are aligned in the data analysis process. Primary and specialized metabolites of leaves from two Chinese provinces, Yunnan (pu′erh) and Fujian (oolong), and a farm in South Carolina (USA, black tea) were studied. UT fingerprinting provided insight into plant metabolism activation/inhibition, taste and trigeminal sensations, and antioxidant properties, not easily attained by other analytical approaches. For example, pu′erh and oolong contained higher relative amounts of amino acids, organic acids, and sugars. Conversely, black tea contained less of all targeted compounds except fructose and glucose, which were more similar to oolong tea. Findings revealed compounds statistically different between spring (pre-monsoon) and summer (monsoon) in pu′erh and oolong teas as well as compounds that exhibited the greatest variability due to seasonal and elevational differences. The UT fingerprinting approach offered unique insights into how differences in growing conditions and commercial processing affect the nutritional benefits and sensory characteristics of tea beverages.
- Published
- 2020
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22. Regionalizing Resilience to Acute Meteorological Events: Comparison of Regions in the U.S.
- Author
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Kevin Summers, Linda Harwell, Lisa M. Smith, and Kyle D. Buck
- Subjects
climate events ,resilience ,vulnerability ,recoverability ,natural hazards ,Environmental sciences ,GE1-350 - Abstract
Using a Climate Resilience Screening Index (CRSI) that was developed to represent resilience to acute weather events at multiple scales for the United States, nine regions of the United States are compared for resilience for these types of natural hazards. The comparison examines the domains, indicators, and metrics of CRSI addressing environmental, economic, and societal aspects of resilience to acute climate events at county scales. The index was applied at the county scale and aggregated to represent select regions of the United States. Comparisons showed higher levels of resilience in the Northeast and West, including Alaska, (>4.0) while counties in the South Atlantic and South-Central regions exhibited lower resilience (0.60), and above national median scores for society, built environment and natural environment domains which enhances their resilience scores. South Atlantic and South-Central regions of the US are characterized by higher risk scores (>0.31) accompanied by lower levels of governance (
- Published
- 2018
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23. Impact of short‐term climate effects and sea ice coverage variation on Japanese scallop aquaculture in Saroma Lake, Japan.
- Author
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Tian, Yongjun, Liu, Yang, Saitoh, Sei–Ichi, Maekawa, Kimihiko, and Mochizuki, Kan‐Ichiro
- Subjects
- *
SCALLOP culture , *CLIMATE change - Abstract
Abstract: Saroma Lake is the southernmost lagoon exhibiting seasonal sea ice coverage in the Northern hemisphere and one of the most important aquaculture areas for Japanese scallops (
Mizuhopecten yessoensis ). Under conditions of adequate food and appropriate temperature, scallops grow well from the time of ice melting in April to harvesting starting in July. However, over the past decade, Saroma Lake frequently has not been completely covered by ice in winter, and the production of Japanese scallops has shown significant changes. Therefore, this study integrated data from satellite remote sensing, buoys, and in situ observations with climatic events [the winter East Asian Monsoon (EAM) and El Niño/La Niña–Southern Oscillation events] to investigate the impact of ice coverage variations on scallop growth in Saroma Lake between 2007 and 2015. Daily ice conditions were detected using Moderate Resolution Imaging Spectroradiometer false colour images and an unsupervised classification method. The results indicated that EAM strongly influenced the ice coverage variation in Saroma Lake through their effects on temperature during winter. Ice coverage variations show a strong correlation with water temperature and spring phytoplankton blooms, which are the two most important environmental factors for scallop growth. In addition, extreme climate events could cause water temperature anomalies (as in 2015) which are unfavourable for scallop growth. Monitoring ice conditions should be considered when developing plans and management strategies for scallop aquaculture in Saroma Lake. [ABSTRACT FROM AUTHOR]- Published
- 2018
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24. Framework for Analyzing Compound and Inter-Related Extremes
- Author
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Mazdiyasni, Omid
- Subjects
Hydrologic sciences ,Water resources management ,Civil engineering ,Climate Events ,Climate Extremes ,Compound Events ,Compound Extremes ,Copula ,Multivariate Analysis - Abstract
Extreme climatic events have significant impacts on society and the environment, especially when multiple hazards occur concurrently (e.g., drought and heat waves) or consecutively (wildfires and extreme precipitation). A large number of indicators have been developed to detect and study changes in extreme events across space and time. While the current climate extreme indicators provide useful information, most do not provide any information on compound/concurrent events. A compound event corresponds to a situation in which multiple (often interrelated) hazard drivers lead to an extreme outcome. Therefore, current univariate methods used for frequency analysis and risk assessment may underestimate the risk or occurrence probability of extreme events. After a comprehensive review of the existing methods, this study outlines frameworks for detecting, modeling, and analyzing inter-related events and processes including compound extremes.
- Published
- 2018
25. Hydroclimate changes since the last glacial maximum from sedimentary biomarkers in a crater lake in the Great Khingan Mountains, Northeast China.
- Author
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Sun, Weiwei, Zhang, Enlou, Liu, Enfeng, You, Yang, Li, Jingjing, Ni, Zhenyu, Meng, Xianqiang, Zhang, Wenfang, and Chen, Rong
- Subjects
- *
CRATER lakes , *LAST Glacial Maximum , *CLIMATE change , *PALEOHYDROLOGY , *LAKE sediments , *GLOBAL warming - Abstract
The scarcity of well-dated, highly temporally resolved, paleoclimate records since the last glacial maximum (LGM) in Northeast China limits our understanding of past climatic variations and the prediction of future hydrological changes in the context of anthropogenic global warming. A high-resolution n -alkane record covering the past ∼25 kyr was retrieved from Lake Tuofengling, a hydrologically closed crater lake in the central Great Khingan Mountains. The sediments contained a suite of mid- and long-chain n -alkanes with a strong odd-to even-carbon number predominance. The relative proportion of mid-to long-chain n -alkane homologues (P aq) was proposed to evaluate the input of submerged/floating plants into lake sediments relative to that from emergent/terrestrial plants, which could be a useful indicator of lake level in lacustrine settings. The P aq proxy demonstrated that lake level increased stably from the shallowest level during the LGM to a maximum depth at 7.5–3.0 cal ka BP, with a minor decreasing trend during the late Holocene. The asynchronous changes in effective moisture in the East Asian summer monsoon (EASM) region since the LGM might be directly or indirectly mediated by the shift in the rainfall belt, the position and intensity of the Western Pacific Subtropical High and Okhotsk High at different timescales. Our study provides new insights into climatic evolution in Northeast China, where the main climate pattern may not always be similar to the typical EASM pattern. • Changes in lake level reconstructed using Paq ratio since LGM. • Younger Dryas was characterized by relatively humid conditions in Northeast China. • Pacific Ocean was the main regulator of hydroclimatic pattern in the EASM region. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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26. Erosion and Flooding Risks in the Marly Basins of the Eastern Prerif Mountains (Morocco): A Response to Exceptional Climate Events or to Anthropogenic Pressure
- Author
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Abdellatif Tribak
- Subjects
Climate events ,geography ,geography.geographical_feature_category ,Flood myth ,Flooding (psychology) ,Anthropogenic pressure ,Sediment ,lcsh:G1-922 ,rif mountains ,General Medicine ,erosion ,rainfall severity ,Hydric soil ,floods ,Erosion ,anthropogenic actions ,lcsh:H1-99 ,Physical geography ,lcsh:Social sciences (General) ,Wadi ,lcsh:Geography (General) - Abstract
The Eastern Rif Mountains are frequently subject to exceptional rainfall events, whose consequences are sometimes disastrous. The impact of these phenomena on environments is more important as the majorities of slopes are bare and subject to strong human influence. The protective natural forests of the slopes are almost destroyed; they currently cover only a few peaks of mountains in the region. They represent 1.84% of the total area of wadi Tleta sub-basin and only 1.32% of the Tarmast wadi sub-basin. However, croplands, occupying respectively 60% and 34% in the two sub-basins, extend even on the steepest slopes. Similarly, the accelerated and uncontrolled human occupation of the urban peripheries, located downstream of the basins, amplifies the vulnerability of these environments to the hydrological hazards, that threaten several sites surrounding the agglomeration of Taza. Thus, the whole region is subject to different degradation processes. Hydric erosion affects the majority of the slopes; it causes excessive sediment production that may exceed 60 t ha -1 year -1 in some sub-basins. Similarly, flood disasters are quite common in the region. The flood of 20/9/2000 is a reference, with a volume estimated at 4 million m 3 (DRH-Sebou 2000). Human and material damage was enormous in the rural centers and in the northern outlying districts of Taza. This contribution aims to present and analyze the combined impacts of the extreme rains and the actions of the human societies on the dynamics of the prerifain environment and its adjoining spaces.
- Published
- 2020
27. Climate events and the role of adaptive capacity in (im)mobility
- Author
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Koubi, Vally, Schaffer, Lena Maria, Spilker, Gabriele, and Böhmelt, Tobias
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Climate events ,Adaptive capacity ,Climate Change ,(Im-)mobility - Abstract
What factors shape individuals' decisions to stay or migrate in the presence of climate change? We study how the relationship between different types of climate events and migration is moderated by individual and household characteristics pertaining to the adaptive capacity of affected individuals. Empirically, we employ survey data from five developing countries (Cambodia, Nicaragua, Peru, Uganda, and Vietnam) that include both migrants and non-migrants. The empirical results caution against sweeping predictions that future climate-relate events will be accompanied by widespread migration. Rather, the findings provide indicative evidence for immobility on the part of certain groups: less-educated and poor individuals are less likely to migrate and often stay in situ even in the presence of severe short-term climate events., + ID der Publikation: unilu_56486 + Sprache: Englisch + Letzte Aktualisierung: 2022-05-11 16:15:47
- Published
- 2022
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28. Impact of the aquatic pathobiome in low-income and middle-income countries (LMICs) quest for safe water and sanitation practices
- Author
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Elisa Taviani and Olivia Pedro
- Subjects
Climate events ,Sanitation ,Drinking Water ,Biomedical Engineering ,Bioengineering ,Low income and middle income countries ,Microbial contamination ,Contaminated water ,Geography ,Water Supply ,Urbanization ,Environmental health ,Developing Countries ,Phylogeny ,Biotechnology - Abstract
Microbial contamination of surface waters is of particular relevance in low-income and middle-income countries (LMICs) since they often represent the only available source of water for drinking and domestic use. In the recent years, a growing urbanization, profound demographic shifts and drastic climate events have greatly affected LMICs capacity to reach access to safe drinking water and sanitation practices, and to protect citizens’ health from risks associated to the exposure and use of contaminated water. Detailed phylogenetic and microbiological information on the exact composition of pathogenic organisms in urban and peri-urban water is scarce, especially in rapidly changing settings of sub-Saharan Africa. In this review we aim to highlight how large-scale water pathobiome studies can support the LMICs challenge to global access to safe water and sanitation practices.
- Published
- 2022
29. Climate events and the role of adaptive capacity for (im-)mobility
- Author
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Vally Koubi, Lena Schaffer, Gabriele Spilker, and Tobias Böhmelt
- Subjects
Climate change ,Climate events ,Adaptive capacity ,(Im-)mobility ,ddc:320 ,Environmental Science (miscellaneous) ,Demography - Abstract
The study examines the relationship between sudden- and gradual-onset climate events and migration, hypothesizing that this relationship is mediated by the adaptive capacity of affected individuals. We use survey data from regions of Cambodia, Nicaragua, Peru, Uganda, and Vietnam that were affected by both types of events with representative samples of non-migrant residents and referral samples of migrants. Although some patterns are country-specific, the general findings indicate that less educated and lower-income people are less likely to migrate after exposure to sudden-onset climate events compared to their counterparts with higher levels of education and economic resources. These results caution against sweeping predictions that future climate-related events will be accompanied by widespread migration., Population and environment, 43, ISSN:0199-0039, ISSN:1573-7810
- Published
- 2022
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30. Observing the past to better understand thefuture: a synthesis of the Neogene climate inEurope and its perspectives on present climatechange
- Author
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Prista Gonçalo A., Agostinho Rui J., and Cachão Mário A.
- Subjects
neogene ,climate change ,climate events ,europe ,climate analogue ,Geology ,QE1-996.5 - Abstract
A review of the entire Neogene climate in Europeis a useful tool for climate researchers, synthesizingpresent day knowledge on a variety of past warmer climatemodes thus facilitating the debate regarding possiblefuture climate scenarios in the Old Continent. This workcentres on the European scenario, debating possible futureprojections and describing the Miocene and Plioceneclimate in the Old Continent. With present evidences ofa global warming scenario, it is highly important that welook at past climatic events in order to better predict futureclimate changes impact in biodiversity. The review presentedhere synthesizes the literature regarding climate,faunal and floral evolution for the European Neogene, andaims to help palaeoclimatic researchers and climatologiststo characterize some of the boundary conditions for modellingpossible analogous of IPPC climate scenarios. If thefuture climate projections come to be true, it is shown thatthe Pliocene, and particularly the Mid Piacenzian WarmPeriod, should be considered as the best analogue for theimpact of a warming climate in Europe.
- Published
- 2015
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31. Modelling forest ruin due to climate hazards
- Author
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Nicolas Viovy, Pascal Yiou, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Extrèmes : Statistiques, Impacts et Régionalisation (ESTIMR), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Modélisation des Surfaces et Interfaces Continentales (MOSAIC), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and ANR-20-CE01-0008,SAMPRACE,Simuler des Evenements Climatiques Rares(2020)
- Subjects
Climate events ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,0303 health sciences ,Extreme climate ,QE1-996.5 ,010504 meteorology & atmospheric sciences ,Science ,Climate change ,Geology ,QE500-639.5 ,Ruin theory ,01 natural sciences ,Hazard ,Dynamic and structural geology ,03 medical and health sciences ,13. Climate action ,Econometrics ,General Earth and Planetary Sciences ,Environmental science ,Probability distribution ,[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment ,Insurance industry ,030304 developmental biology ,0105 earth and related environmental sciences - Abstract
Estimating the risk of forest collapse due to extreme climate events is one of the challenges of adapting to climate change. We adapt a concept from ruin theory, which is widely used in econometrics and the insurance industry, to design a growth–ruin model for trees which accounts for climate hazards that can jeopardize tree growth. This model is an elaboration of a classical Cramer–Lundberg ruin model that is used in the insurance industry. The model accounts for the interactions between physiological parameters of trees and the occurrence of climate hazards. The physiological parameters describe interannual growth rates and how trees react to hazards. The hazard parameters describe the probability distributions of the occurrence and intensity of climate events. We focus on a drought–heatwave hazard. The goal of the paper is to determine the dependence of the forest ruin and average growth probability distributions on physiological and hazard parameters. Using extensive Monte Carlo experiments, we show the existence of a threshold in the frequency of hazards beyond which forest ruin becomes certain to occur within a centennial horizon. We also detect a small effect of the strategies used to cope with hazards. This paper is a proof of concept for the quantification of forest collapse under climate change.
- Published
- 2021
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32. Climate change adaptation in conflict-affected countries: A systematic assessment of evidence
- Author
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M. van Aalst, Asha Sitati, Katharine J. Mach, Elisabeth A. Gilmore, P. Umunay, G. Nagle Alverio, E. Coughlan de Perez, Elphin Tom Joe, Catalina Jaime, Brian Pentz, Idowu Ajibade, Giulia Scarpa, Zinta Zommers, I. Togola, Nicholas Philip Simpson, A. J. Hudson, P. Nayna Schwerdtle, C. Grayson, Eranga K. Galappaththi, L. S. Safaee Chalkasra, Sienna Templeman, A. Khouzam, UT-I-ITC-4DEarth, Faculty of Geo-Information Science and Earth Observation, and Department of Earth Systems Analysis
- Subjects
Sustainable development ,Climate events ,media_common.quotation_subject ,Vulnerability ,Climate change ,Review ,Environmental sciences ,Scholarship ,Political science ,Development economics ,GE1-350 ,Climate change adaptation ,Adaptation (computer science) ,ITC-GOLD ,Diversity (politics) ,media_common - Abstract
People affected by conflict are particularly vulnerable to climate shocks and climate change, yet little is known about climate change adaptation in fragile contexts. While climate events are one of the many contributing drivers of conflict, feedback from conflict increases vulnerability, thereby creating conditions for a vicious cycle of conflict. In this study, we carry out a systematic review of peer-reviewed literature, taking from the Global Adaptation Mapping Initiative (GAMI) dataset to documenting climate change adaptation occurring in 15 conflict-affected countries and compare the findings with records of climate adaptation finance flows and climate-related disasters in each country. Academic literature is sparse for most conflict-affected countries, and available studies tend to have a narrow focus, particularly on agriculture-related adaptation in rural contexts and adaptation by low-income actors. In contrast, multilateral and bilateral funding for climate change adaptation addresses a greater diversity of adaptation needs, including water systems, humanitarian programming, and urban areas. Even among the conflict-affected countries selected, we find disparity, with several countries being the focus of substantial research and funding, and others seeing little to none. Results indicate that people in conflict-affected contexts are adapting to climate change, but there is a pressing need for diverse scholarship across various sectors that documents a broader range of adaptation types and their results.
- Published
- 2021
33. Population collapse or human resilience in response to the 9.3 and 8.2 ka cooling events: A multi-proxy analysis of Mesolithic occupation in the Scheldt basin (Belgium)
- Author
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Florian Lauryssen, Yves Perdaen, Hans Vandendriessche, Erwin Meylemans, Erik Smolders, Elliot Van Maldegem, Jeroen Verhegge, Philippe Crombé, and Joris Sergant
- Subjects
Climate events ,Archeology ,History ,Prehistoric demography ,Environmental change ,media_common.quotation_subject ,Population ,Social Sciences ,Human Factors and Ergonomics ,Structural basin ,law.invention ,ENVIRONMENTAL-CHANGE ,NEOLITHIC POPULATION ,CULTURAL-EVOLUTION ,law ,TEMPORAL FREQUENCY-DISTRIBUTIONS ,Radiocarbon dating ,EQUILIBRIUM-LINE ALTITUDES ,BONE APATITE ,education ,Holocene ,Mesolithic ,media_common ,education.field_of_study ,Science & Technology ,History and Archaeology ,Hunter-gatherer mobility ,RADIOCARBON-DATES ,NW-Europe ,HOLOCENE CLIMATE VARIABILITY ,Summed Probability Distributions ,Geography ,Archaeology ,Anthropology ,SUMMED PROBABILITY-DISTRIBUTION ,Psychological resilience ,Physical geography ,YR BP EVENT ,Life Sciences & Biomedicine - Abstract
This paper explores the impact of environmental, e.g. sea level rise, and climatic events, e.g. abrupt cooling events, on Mesolithic populations (ca. 11,350 to 6600 cal BP) living in the western Scheldt basin of Belgium and Northern France. The Mesolithic in this study-area has been extensively studied during the last few decades, leading to an extensive database of radiocarbon dates (n = 418), sites (n = 157) and excavated loci (n = 145). A multi-proxy analysis of this database reveals important changes both chronologically and geographically, which are interpreted in terms of population dynamics and changing mobility and land-use. The results suggest a population peak and high residential mobility in the Early Mesolithic, followed by a population shift and increased intra-basin mobility in the Middle Mesolithic, possibly triggered by the rapid inundation of the North Sea basin. The situation during the Late Mesolithic remains less clear but a possible reduction in the mobility seems likely. Currently there is little evidence supporting a causal link between these diachronic changes in human behavior and the 9.3 and 8.2 ka cooling events. Most of the observed changes seem more in response to long-term climatic and environmental changes during the Early and Middle Holocene, hinting at considerable resilience.
- Published
- 2021
34. The role of protected areas co-management in enhancing resistance and resilience of deciduous forest ecosystem to extreme climatic events in Bangladesh.
- Author
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Karim, Md. Rezaul, Mukul, Sharif A., Zahir, Rokaiya Binte, Saimun, Shamim Reza, and Arfin-Khan, Mohammed A.S.
- Subjects
- *
FOREST resilience , *CLIMATE extremes , *FOREST management , *TROPICAL dry forests , *PROTECTED areas , *FOREST reserves , *FOREST productivity - Abstract
Due to ongoing and projected climate change as well as increasing anthropogenic disturbances, the tropical deciduous forest has been experiencing a decline in its biomass and productivity. To mitigate this adverse effect, many tropical countries have adopted forest co-management engaging local communities. However, the effects of co-management on the resistance and resilience of forest ecosystems to extreme climatic events have rarely been tested. The present study investigates the effects of co-management on resistance and resilience to extreme climatic events in two major tropical deciduous forest protected areas of Bangladesh, namely Madhupur National Park (MNP) and Bhawal National Park (BNP), through remotely sensed satellite data. We used the Google Earth Engine platform to access the Landsat images from 1990 to 2020 for a comprehensive assessment of the forest cover condition under two major management regimes (i.e., traditional and co-management). We find that co-management slows down the rate of forest destruction, where the rate of forest destruction was 108 ha year−1 in MNP and 121 ha year−1 in BNP during the year 1990–2008 under traditional forest management system. Under the co-management regime, forest cover increased by 19 ha year−1 and 41 ha year−1 from 2009 to 2020 respectively in MNP and BNP. Our study finds a highly significant correlation between rainfall (p < 0.001) and forest health, although co-management had poor impacts on forest resistance and resilience in case of extreme climatic events, such as drought and heavy rainfall. We find, no significant impacts of co-management on resistance and resilience to drought in MNP, and on resistance and resilience to heavy rainfall in MNP and BNP. In BNP, the impacts of co-management on resistance (p < 0.05) and resilience (p < 0.01) of forest to drought were highly significant. Forest co-management although have the potentials to reduce the deforestation rate by mitigating anthropogenic disturbances, its capacity to tackle the adverse impact of climate change was limited in our study. An adaptive co-management model, therefore, is crucial for mainstreaming the adverse effect of climate change on the tropical deciduous forest to harness the maximum potential of community participation in forest resources management. • The effect of the co-management on forest resistance and resilience to extreme climatic events in two protected areas of Bangladesh were investigated. • Forest cover increased by 19 ha year−1 in MNP and 41 ha year−1 in BNP from 2009 to 2020 under the co-management. • We find a highly significant (p < 0.001) correlation between rainfall and forest health, although co-management had limited impacts on forest resistance and resilience. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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35. Financing loss and damage from slow onset events in developing countries
- Author
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Timmons Roberts, David Ciplet, Stacy-ann Robinson, Romain Weikmans, and Mizan R. Khan
- Subjects
Climate events ,Finance ,010504 meteorology & atmospheric sciences ,business.industry ,General Social Sciences ,Developing country ,Loss and damage ,010501 environmental sciences ,01 natural sciences ,humanities ,Sciences sociales ,Sustainability ,Business ,0105 earth and related environmental sciences ,General Environmental Science - Abstract
Based on a systematic review of journal articles, books and book chapters, and policy papers, we evaluate possible sources of finance for addressing loss and damage from slow onset climate events in developing countries. We find that most publications explore insurance schemes which are not appropriate for most slow onset events. From this, we determine that only a few sources are sustainable. Levies and taxes are seen as relatively fair, predictable, adequate, transparent, and additional. These results confirm that current options for sustainably and equitably financing loss and damage from slow onset events are limited., info:eu-repo/semantics/published
- Published
- 2021
36. Do changes in the water regime determine the abundance of the copepod trophic group in a Neotropical floodplain?
- Author
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Vanessa Graciele Tibúrcio, Tatiane Mantovano, Lenin Medeiros de Almeida Lino, and Fábio Amodêo Lansac-Tôha
- Subjects
0106 biological sciences ,floodplain ,trophic guilds ,010504 meteorology & atmospheric sciences ,Floodplain ,Aquatic Science ,Biology ,01 natural sciences ,Zooplankton ,Abundance (ecology) ,Ecology, Evolution, Behavior and Systematics ,QH540-549.5 ,0105 earth and related environmental sciences ,Water Science and Technology ,Trophic level ,geography ,Herbivore ,geography.geographical_feature_category ,Ecology ,010604 marine biology & hydrobiology ,Aquatic ecosystem ,fungi ,climate events ,biology.organism_classification ,microcrustaceans ,Productivity (ecology) ,Copepod - Abstract
Aim Our study evaluated the effects of extreme weather events and environmental conditions on the trophic groups of copepods (herbivores and omnivores) in the upper Paraná River floodplain. Methods The zooplankton were collected and Copepods and Rotifers were analyzed in nine environments of the upper Paraná River floodplain during 2000 and 2010, during which time the La Niña (drought) and El Niño (flood) climatic events occurred, respectively. Results The results suggest that in periods of extreme drought productivity-related variables act as determining forces on abundance of copepod trophic groups due to the contraction of aquatic ecosystems. Although the abundance of trophic groups is associated with system productivity, the responses between them differ, since herbivore abundance was associated with chlorophyll-a and total phosphorus and omnivores with rotifer abundance. In extreme flood (El Niño), no significant relationship was found between environmental variables and any trophic group. Conclusions In general, it is believed that in periods of extreme drought the variables associated with productivity act as determining forces on the abundance of trophic groups of copepods due to the contraction of aquatic ecosystems. According to the results found, it is suggested that other works be carried out with a greater number of extreme events to corroborate our results and, and also to extrapolate to other aquatic communities.
- Published
- 2021
37. Tackling extremes: challenges for ecological and evolutionary research on extreme climatic events.
- Author
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Bailey, Liam D., Pol, Martijn, and Pelletier, Fanie
- Subjects
- *
CLIMATE extremes , *ECOLOGICAL research , *EVOLUTION research , *ANIMAL ecology , *CLIMATE change - Abstract
1. Extreme climatic events (ECEs) are predicted to become more frequent as the climate changes. A rapidly increasing number of studies - though few on animals - suggest that the biological consequences of ECEs can be severe. 2. However, ecological research on the impacts of ECEs has been limited by a lack of cohesiveness and structure. ECEs are often poorly defined and have often been confusingly equated with climatic variability, making comparison between studies difficult. In addition, a focus on short-term studies has provided us with little information on the long-term implications of ECEs, and the descriptive and anecdotal nature of many studies has meant it is still unclear what the key research questions are. 3. Synthesizing the current state of work is essential to identify ways to make progress. We conduct a synthesis of the literature and discuss conceptual and practical challenges faced by research on ECEs. 4. We consider three steps to advance research. First, we discuss the importance of choosing an ECE definition and identify the pros and cons of 'climatological' and 'biological' definitions of ECEs. Secondly, we advocate research beyond short-term descriptive studies to address questions concerning the long-term implications of ECEs, focussing on selective pressures and phenotypically plastic responses and how they might differ from responses to a changing climatic mean. Finally, we encourage a greater focus on multi-event studies that help us understand the implications of changing patterns of ECEs, through the combined use of modelling, experimental and observational field studies. 5. This study aims to open a discussion on the definitions, questions and methods currently used to study ECEs, which will lead to a more cohesive approach to future ECE research. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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38. Architecture and evolution of deep-water cyclic deposits in the Qiongdongnan Basin, South China Sea: Relationship with the Pleistocene climate events.
- Author
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Wang, Dawei, Wu, Shiguo, Yao, Genshun, and Wang, Weiwei
- Subjects
- *
CLIMATOLOGY , *NATURAL resources , *EROSION , *WAVE analysis - Abstract
Cyclic deposit systems, which exhibit mass-transport deposits at the base and channel-levee deposits toward the top, are identified in Pleistocene sequences of the deep-water Qiongdongnan Basin at depths between 1000 and 1500 m. Based on 3D seismic data, seismic amplitude, coherence, time thickness, waveform classification, and stratal slices, we show the vertical evolution of the cyclic deposit system. Channel-levee deposits display the sequence from the erosional channel systems to the leveed channel systems. Erosional channel systems have a stronger ability to incise the slope and contain erosional channels, un-developed levees, smooth lateral margins, crevasse splays, and slides. Leveed channel systems, which are less deeply incised than erosional channel systems, contain leveed channels, developed levees and overbank deposits. Kinematic indicators suggest that cyclic deposit systems are sourced from shelf edge/upper slope systems in central Vietnam, where mountainous rivers deliver high amounts of terrigenous clastics. The proper order of the cyclic deposit system, pollen cycles from Site 1144, and the maximum δ 13 C values (δ 13 Cmax) at 1.6, 1.0 and 0.5 Ma from Site 1143 suggest a new model for the systematic deep-water sequences that may be related to the different stages of Pleistocene relative sea-level changes on the long eccentricity cycle time-scale. The start time point of three cyclic deposit systems is inferred respectively corresponding to three climate events at 1.6, 0.9 and 0.4 Ma during the Pleistocene. [ABSTRACT FROM AUTHOR]
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- 2015
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39. Livelihood factors and household strategies for an unexpected climate event in upland northern Laos.
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Ingxay, Phanxay, Yokoyama, Satoshi, and Hirota, Isao
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CLIMATE change ,FOOD production ,RURAL geography ,RICE ,T-test (Statistics) - Abstract
Climate events pose major challenges to food production and the livelihoods of rural inhabitants in northern Laos, where upland rice using swidden production is an important crop. The onset of the rainy season in this area is one such climate event, and it has occurred earlier and with less regularity in recent years. Not all households are able to cope with these changes. This study examines the ability of local farmers to cope with rice insufficiency. This investigation also clarifies household strategies in dealing with the climate event. We randomly interviewed 63 of 95 household heads, and performed a paired sample t test to examine the significance of differences in three household groups between the 2010 normal climate and the 2011 climate event. The groups were categorized according to rice self-sufficiency in 2011: groups I are households with rice self-sufficiency, group II are those facing a rice shortage of up to 3 months, and group III are those with insufficient rice for over 3 months. We also conducted a one-way ANOVA to examine the significance of differences in livelihood strategies among the three groups. We found that the household labor force was the most important factor in enhancing the villagers' ability to deal with the climate event and that the level of impact of that event shaped their coping strategies. Households with substantial labor force had more options for coping strategies than those with smaller ones. The villagers faced different levels of impact and adopted different coping strategies accordingly. Non-timber forest product collection was the principle livelihood strategy in response to non-climate factors such as education, access to health services, provision of equipment and clothing, and overcoming the impact of the climate event. Households heavily affected by the early rainy season onset tended to engage in intensive activities such as off-farm activity and outside work, rather than their major livelihood activities in the village (upland crop and livestock production). [ABSTRACT FROM AUTHOR]
- Published
- 2015
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40. Impact of Oceanographic Environmental Shifts and Atmospheric Events on the Sustainable Development of Coastal Aquaculture: A Case Study of Kelp and Scallops in Southern Hokkaido, Japan.
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Yang Liu, Sei-Ichi Saitoh, Satoshi Nakada, Xun Zhang, and Toru Hirawake
- Abstract
We provide an overview of selected recent operational applications of satellite remote sensing and marine Geographic Information Systems (GIS) procedures to the practice of sustainable aquaculture in southern Hokkaido, Japan, focusing mainly on kelp and scallop aquaculture. We also developed a suitable aquaculture site-selection model (SASSM) for suspension culture of Gagome (a kelp species) in the same region. Models for Japanese kelp and Gagome showed that the distributions of the most suitable areas for both species overlapped. Competition between kelps was especially marked along the coastline between Hakodate and Esan. In addition, we examined the impact of oceanographic environmental changes and atmospheric events on scallop and kelp aquaculture sites, demonstrating that variations in the coastal Oyashio Current and the Tsugaru Warm Current significantly influenced the growth and harvesting seasons of scallops and kelps in Funka Bay and other sections of southern Hokkaido. Because a strong El Niño event occurred in 2010, January of that year was extremely cold. The proportion of suitable areas for both scallops and kelps during their respective growing seasons contracted in 2010. Thus, shifts in oceanographic and atmospheric conditions should be incorporated into sustainability management planning for coastal scallop and kelp aquaculture in southern Hokkaido. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
41. Compound climate events and extremes in the mid-latitudes: dynamics, simulation and statistical characterisation
- Author
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Pascal Yiou, Colin Raymond, Paolo De Luca, Kai Kornhuber, Olivia Martius, Dim Coumou, Davide Faranda, Emanuele Bevacqua, Gabriele Messori, Kunhui Ye, Rodrigo Caballero, Jakob Zscheischler, Flavio Maria Emanuele Pons, Uppsala University, University of Reading (UOR), Stockholm University, Vrije Universiteit Amsterdam [Amsterdam] (VU), Royal Netherlands Meteorological Institute (KNMI), Laboratoire de Météorologie Dynamique (UMR 8539) (LMD), Institut national des sciences de l'Univers (INSU - CNRS)-École polytechnique (X)-École des Ponts ParisTech (ENPC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Département des Géosciences - ENS Paris, École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), London Mathematical Laboratory, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Extrèmes : Statistiques, Impacts et Régionalisation (ESTIMR), Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Columbia University [New York], Universität Bern [Bern], Jet Propulsion Laboratory (JPL), NASA-California Institute of Technology (CALTECH), Helmholtz Zentrum für Umweltforschung = Helmholtz Centre for Environmental Research (UFZ), Water and Climate Risk, Earth and Climate, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École normale supérieure - Paris (ENS-PSL), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), and Universität Bern [Bern] (UNIBE)
- Subjects
Climate events ,Atmospheric Science ,Climate Research ,010504 meteorology & atmospheric sciences ,Atmospheric circulation ,530 Physics ,0211 other engineering and technologies ,02 engineering and technology ,[SDU.STU.ME]Sciences of the Universe [physics]/Earth Sciences/Meteorology ,01 natural sciences ,Klimatforskning ,Statistical techniques ,Extreme events ,910 Geography & travel ,ComputingMilieux_MISCELLANEOUS ,0105 earth and related environmental sciences ,021110 strategic, defence & security studies ,Characterization (materials science) ,13. Climate action ,[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology ,Climatology ,Middle latitudes ,Environmental science - Abstract
The workshop, conducted virtually due to travel restrictions related to COVID-19, gathered scientists from six countries and focused on the mechanistic understanding, statistical characterization, and modeling of societally relevant compound climate events and extremes in the midlatitudes. These ranged from co-occurring hot–humid or wet–windy extremes, to spatially compounding wet and dry extremes, to temporally compounding hot–wet events and more. The aim was to bring together selected experts studying a diverse range of compound climate events and extremes to present their ongoing work and outline challenges and future developments in this societally relevant field of research.
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- 2021
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42. Observing the past to better understand the future: a synthesis of the Neogene climate in Europe and its perspectives on present climate change.
- Author
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Prista, Gonçalo A., Agostinho, Rui J., and Cachão, Mário A.
- Abstract
A review of the entire Neogene climate in Europe is a useful tool for climate researchers, synthesizing present day knowledge on a variety of past warmer climate modes thus facilitating the debate regarding possible future climate scenarios in the Old Continent. This work centres on the European scenario, debating possible future projections and describing the Miocene and Pliocene climate in the Old Continent. With present evidences of a global warming scenario, it is highly important that we look at past climatic events in order to better predict future climate changes impact in biodiversity. The review presented here synthesizes the literature regarding climate, faunal and floral evolution for the European Neogene, and aims to help palaeoclimatic researchers and climatologists to characterize some of the boundary conditions for modelling possible analogous of IPPC climate scenarios. If the future climate projections come to be true, it is shown that the Pliocene, and particularly the Mid Piacenzian Warm Period, should be considered as the best analogue for the impact of a warming climate in Europe. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
43. On the sensitivity of the simulated European Neolithic transition to climate extremes.
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Lemmen, Carsten and Wirtz, Kai W.
- Subjects
- *
NEOLITHIC Period , *CLIMATE change , *PALEOCLIMATOLOGY , *MATHEMATICAL models , *CARBON isotopes , *SPACETIME - Abstract
Was the spread of agropastoralism from the Fertile Crescent throughout Europe influenced by extreme climate events, or was it independent of climate? We here generate idealized climate events using palaeoclimate records. In a mathematical model of regional sociocultural development, these events disturb the subsistence base of simulated forager and farmer societies. We evaluate the regional simulated transition timings and durations against a published large set of radiocarbon dates for western Eurasia; the model is able to realistically hindcast much of the inhomogeneous space-time evolution of regional Neolithic transitions. Our study shows that the consideration of climate events improves the simulation of typical lags between cultural complexes, but that the overall difference to a model without climate events is not significant. Climate events may not have been as important for early sociocultural dynamics as endogenous factors. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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44. Global hotspots for the occurrence of compound events
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Jason P. Evans, Hong Xuan Do, Anna M. Ukkola, Andrew J. Pitman, Jakob Zscheischler, Nina Ridder, Margot Bador, Seth Westra, Annette L. Hirsch, and Alejandro Di Luca
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Climate events ,Multivariate statistics ,010504 meteorology & atmospheric sciences ,530 Physics ,Science ,0208 environmental biotechnology ,General Physics and Astronomy ,Weather and climate ,02 engineering and technology ,01 natural sciences ,behavioral disciplines and activities ,General Biochemistry, Genetics and Molecular Biology ,Article ,Natural hazard ,0105 earth and related environmental sciences ,Multidisciplinary ,Natural hazards ,food and beverages ,General Chemistry ,social sciences ,Publisher Correction ,Hazard ,humanities ,020801 environmental engineering ,Geography ,Western europe ,Climate model ,Physical geography ,Climate sciences - Abstract
Compound events (CEs) are weather and climate events that result from multiple hazards or drivers with the potential to cause severe socio-economic impacts. Compared with isolated hazards, the multiple hazards/drivers associated with CEs can lead to higher economic losses and death tolls. Here, we provide the first analysis of multiple multivariate CEs potentially causing high-impact floods, droughts, and fires. Using observations and reanalysis data during 1980–2014, we analyse 27 hazard pairs and provide the first spatial estimates of their occurrences on the global scale. We identify hotspots of multivariate CEs including many socio-economically important regions such as North America, Russia and western Europe. We analyse the relative importance of different multivariate CEs in six continental regions to highlight CEs posing the highest risk. Our results provide initial guidance to assess the regional risk of CE events and an observationally-based dataset to aid evaluation of climate models for simulating multivariate CEs., Compound climate events such as floods and droughts together can cause severe socio-economic impacts. Here, the authors analyse global hazard pairs from 1980–2014 and find global hotspots for the occurrence of compound events.
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- 2020
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- View/download PDF
45. SISALv2: a comprehensive speleothem isotope database with multiple age–depth models
- Author
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L. Comas-Bru, K. Rehfeld, C. Roesch, S. Amirnezhad-Mozhdehi, S. P. Harrison, K. Atsawawaranunt, S. M. Ahmad, Y. A. Brahim, A. Baker, M. Bosomworth, S. F. M. Breitenbach, Y. Burstyn, A. Columbu, M. Deininger, A. Demény, B. Dixon, J. Fohlmeister, I. G. Hatvani, J. Hu, N. Kaushal, Z. Kern, I. Labuhn, F. A. Lechleitner, A. Lorrey, B. Martrat, V. F. Novello, J. Oster, C. Pérez-Mejías, D. Scholz, N. Scroxton, N. Sinha, B. M. Ward, S. Warken, H. Zhang, European Research Council, Asian School of the Environment, and Comas-Bru L, Rehfeld K, Roesch C, Amirnezhad-Mozhdehi S, Harrison S, Atsawawaranunt K, Ahmad S, Ait Brahim Y, Baker A, Bosomworth M, Breitenbach S, Burstyn Y, Columbu A, Deininger M, Demény A, Dixon B, Fohlmeister J, Hatvani I, Hu J, Kaushal N, Kern Z, Labuhn I, Lechleitner F, Lorrey A, Martrat B, Novello V, Oster J, Pérez-Mejías C, Scholz D, Scroxton N, Sinha N, Ward B, Warken S, Zhang H
- Subjects
Climate events ,010506 paleontology ,SISALv2 ,010504 meteorology & atmospheric sciences ,Speleothem ,Climate change ,F800 ,computer.software_genre ,01 natural sciences ,palaeoclimate ,modelling ,Isotopes ,SDG 13 - Climate Action ,SISAL ,speleothem ,lcsh:Environmental sciences ,0105 earth and related environmental sciences ,lcsh:GE1-350 ,geography ,geography.geographical_feature_category ,Database ,lcsh:QE1-996.5 ,15. Life on land ,chronology ,Environmental engineering [Engineering] ,lcsh:Geology ,13. Climate action ,General Earth and Planetary Sciences ,Climate model ,computer ,Geology - Abstract
Characterizing the temporal uncertainty in palaeoclimate records is crucial for analysing past climate change, correlating climate events between records, assessing climate periodicities, identifying potential triggers and evaluating climate model simulations. The first global compilation of speleothem isotope records by the SISAL (Speleothem Isotope Synthesis and Analysis) working group showed that age model uncertainties are not systematically reported in the published literature, and these are only available for a limited number of records (ca. 15 %, n = 107/691). To improve the usefulness of the SISAL database, we have (i) improved the database’s spatio-temporal coverage and (ii) created new chronologies using seven different approaches for age– depth modelling. We have applied these alternative chronologies to the records from the first version of the SISAL database (SISALv1) and to new records compiled since the release of SISALv1. This paper documents the necessary changes in the structure of the SISAL database to accommodate the inclusion of the new age models and their uncertainties as well as the expansion of the database to include new records and the qualitycontrol measures applied. This paper also documents the age–depth model approaches used to calculate the new chronologies. The updated version of the SISAL database (SISALv2) contains isotopic data from 691 speleothem records from 294 cave sites and new age–depth models, including age–depth temporal uncertainties for 512 speleothems. SISALv2 is available at https://doi.org/10.17864/1947.256 (Comas-Bru et al., 2020a)., The design and creation of v2 of the database were supported by funding to Sandy P. Harrison from the ERCfunded project GC2.0 (Global Change 2.0: Unlocking the past for a clearer future; grant no. 694481) and the Geological Survey Ireland Short Call 2017 (Developing a toolkit for model evaluation using speleothem isotope data; grant no. 2017-SC-056) award to Laia Comas-Bru. Sandy P. Harrison and Laia Comas-Bru received additional support from the ERC-funded project GC2.0 and from the JPI-Belmont project “PAlaeo-Constraints on Monsoon Evolution and Dynamics (PACMEDY)” through the UK Natural Environmental Research Council (NERC). Laia Comas-Bru and Belen Martrat received support from the CSIC scientific international collaboration programme I-LINKA20102 IBCC-lo2k. Kira Rehfeld and Denis Scholz acknowledge support by the Deutsche Forschungsgemeinschaft (DFG; codes RE3994/2-1 and SCHO 1274/11-1).
- Published
- 2020
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46. Hotel prices, climate events and weather conditions: the case of Italian destinations (WEBINAR 25/06/2020)
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Figini, Paolo, Arabadzhyan, Anastasia, and Vici, Laura
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Climate events ,italian destinations ,Hotel prices - Abstract
Presentation at the SOCLIMPACT webinar on 25/06/2020 to the online community Main topics: Research questions Theoretical background Data and Methodology Main results Implication for SOCLIMPACT
- Published
- 2020
- Full Text
- View/download PDF
47. Hotel prices, climate events and weather conditions: the case of italian destinations
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Paolo Figini, Anastasia Arabadzhyan, and Laura Vici
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Climate events ,italian destinations ,Hotel prices - Abstract
Presentation at the SOCLIMPACT webinar on 25/06/2020 to the online community Main topics: Research questions Theoretical background Data and Methodology Main results Implication for SOCLIMPACT
- Published
- 2020
- Full Text
- View/download PDF
48. Extreme Weather and Climate Events: Physical Drivers, Modeling and Impact Assessment
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Xiaosong Yang and Wei Zhang
- Subjects
Climate events ,010504 meteorology & atmospheric sciences ,Impact assessment ,extreme precipitation ,lcsh:Naval architecture. Shipbuilding. Marine engineering ,Ocean Engineering ,02 engineering and technology ,extreme weather and climates ,021001 nanoscience & nanotechnology ,01 natural sciences ,Extreme weather ,lcsh:Oceanography ,lcsh:VM1-989 ,Climatology ,Environmental science ,cyclones ,hurricanes ,lcsh:GC1-1581 ,0210 nano-technology ,0105 earth and related environmental sciences ,Water Science and Technology ,Civil and Structural Engineering - Abstract
Extreme weather and climate events, including hurricanes [...]
- Published
- 2020
49. Compound climate events transform electrical power shortfall risk in the Pacific Northwest
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Sean W. D. Turner, Nathalie Voisin, D. Hua, M. Jourabchi, and J. Fazio
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0301 basic medicine ,Climate events ,Natural resource economics ,Science ,General Physics and Astronomy ,Climate change ,02 engineering and technology ,Article ,General Biochemistry, Genetics and Molecular Biology ,03 medical and health sciences ,Electric power system ,Shortfall risk ,medicine ,lcsh:Science ,Hydropower ,Multidisciplinary ,Energy demand ,business.industry ,General Chemistry ,Seasonality ,021001 nanoscience & nanotechnology ,medicine.disease ,030104 developmental biology ,Environmental science ,lcsh:Q ,Electric power ,0210 nano-technology ,business - Abstract
Power system reliability is sensitive to climate-driven variations in both energy demand and water availability, yet the combined effect of these impacts is rarely evaluated. Here we show that combined climate change impacts on loads and hydropower generation may have a transformative effect on the nature and seasonality of power shortfall risk in the U.S. Pacific Northwest. Under climate change, potential shortfall events occur more readily, but are significantly less severe in nature. A seasonal reversal in shortfall risk occurs: winter shortfalls are eradicated due to reduced building heating demands, while summer shortfalls multiply as increased peak loads for day-time cooling coincide with impaired hydropower generation. Many of these summer shortfalls go unregistered when climate change impacts on loads and hydropower dispatch are analyzed in isolation—highlighting an important role of compound events., Climate change will affect both the demand for electrical power and the generating capabilities of hydropower plants. Here the authors investigated the combined impact of these effects in the US Pacific Northwest by considering the dynamics of the regional power grid, where they reveal a profound impact of climate change on power shortfall risk by the year 2035.
- Published
- 2019
50. Evidence for magmatic carbon bias in 14C dating of the Taupo and other major eruptions
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Brendan Duffy, Richard N. Holdaway, and Ben Kennedy
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Climate events ,010506 paleontology ,geography ,Volcanic hazards ,Multidisciplinary ,geography.geographical_feature_category ,010504 meteorology & atmospheric sciences ,Science ,Earth science ,General Physics and Astronomy ,General Chemistry ,01 natural sciences ,Article ,General Biochemistry, Genetics and Molecular Biology ,Prehistory ,Volcano ,Dendrochronology ,Caldera ,lcsh:Q ,Quaternary ,lcsh:Science ,Southern Hemisphere ,Geology ,0105 earth and related environmental sciences - Abstract
Prehistoric timescales, volcanic hazard assessment, and understanding of volcanogenic climate events rely on accurate dating of prehistoric eruptions. Most late Quaternary eruptions are dated by 14C measurements on material from close to the volcano that may be contaminated by geologic-sourced infinite-age carbon. Here we show that 14C ages for the Taupo (New Zealand) First Millennium eruption are geographically arrayed, with oldest ages closer to the vent. The current eruption wiggle match date of 232 ± 5 years CE is amongst the oldest. We present evidence that the older, vent-proximal 14C ages were biased by magmatic CO2 degassed from groundwater, and that the Taupo eruption occurred decades to two centuries after 232 CE. Our reinterpretation implies that ages for other proximally-dated, unobserved, eruptions may also be too old. Plateauing or declining tree ring cellulose δ13C and Δ14C values near a volcano indicate magmatic influence and may allow forecasting of super-eruptions., Correlations between prehistoric eruptions and other phenomena depend on accurate dating of the eruption. Here the authors show that magmatic CO2 in groundwater can bias radiocarbon ages for eruptions and that plateaux of carbon isotopic values in tree ring sequences biased by magmatic CO2 foreshadow major eruptions.
- Published
- 2018
- Full Text
- View/download PDF
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