511 results on '"Chandler, Mark"'
Search Results
2. Secondary Science Teachers' Implementation of a Curricular Intervention When Teaching with Global Climate Models
- Author
-
Carroll Steward, Kimberly, Bhattacharya, Devarati, Chandler, Mark, and Forbes, Cory T.
- Abstract
In the past decade, emphasis on promoting "climate literacy" in K-16 science classrooms has increased. Teachers play a critical role in cultivating these opportunities, especially in secondary science classrooms. However, most prior climate education research has focused on students and student learning; little is known about how teachers implement climate-focused curricular interventions. Here, we report findings from a concurrent mixed methods, multiple-case study of four secondary science teachers' implementation of a new, NGSS-aligned, model-centric climate curriculum module grounded in the use of a data-driven, computer-based climate modeling tool--Easy Global Climate Model (EzGCM). We employ multiple data sources, including video-recorded classroom observations, interviews, and instructional artifacts, and both qualitative and quantitative analyses, to investigate how teachers implemented the curriculum. Findings show that, overall, teachers implemented the curriculum in ways that were less model-centric than designed, placing greater emphasis on EzGCM itself rather than using the model to investigate Earth's changing climate. Additionally, we present detailed single-case studies of each participant teacher that highlight differences in teachers' implementation of the curriculum module and their reasoning for making observed instructional decisions. This research sheds light on the design of secondary science learning environments by illustrating the varied ways teachers implement a climate-focused curriculum to support students' developing climate literacy. This has important implications for the design of climate-focused curriculum and supports for teachers.
- Published
- 2022
- Full Text
- View/download PDF
3. Losing the cutting edge?
- Author
-
Chandler, Mark
- Published
- 1997
4. Mid-Pliocene El Niño/Southern Oscillation suppressed by Pacific intertropical convergence zone shift
- Author
-
Pontes, Gabriel M., Taschetto, Andréa S., Sen Gupta, Alex, Santoso, Agus, Wainer, Ilana, Haywood, Alan M., Chan, Wing-Le, Abe-Ouchi, Ayako, Stepanek, Christian, Lohmann, Gerrit, Hunter, Stephen J., Tindall, Julia C., Chandler, Mark A., Sohl, Linda E., Peltier, W. Richard, Chandan, Deepak, Kamae, Youichi, Nisancioglu, Kerim H., Zhang, Zhongshi, Contoux, Camille, Tan, Ning, Zhang, Qiong, Otto-Bliesner, Bette L., Brady, Esther C., Feng, Ran, von der Heydt, Anna S., Baatsen, Michiel L. J., and Oldeman, Arthur M.
- Published
- 2022
- Full Text
- View/download PDF
5. The Teaching of Anthropogenic Climate Change and Earth Science via Technology-Enabled Inquiry Education
- Author
-
Bush, Drew, Sieber, Renee, Seiler, Gale, and Chandler, Mark
- Abstract
A gap has existed between the tools and processes of scientists working on anthropogenic global climate change (AGCC) and the technologies and curricula available to educators teaching the subject through student inquiry. Designing realistic scientific inquiry into AGCC poses a challenge because research on it relies on complex computer models, globally distributed data sets, and complex laboratory and data collection procedures. Here we examine efforts by the scientific community and educational researchers to design new curricula and technology that close this gap and impart robust AGCC and Earth Science understanding. We find technology-based teaching shows promise in promoting robust AGCC understandings if associated curricula address mitigating factors such as time constraints in incorporating technology and the need to support teachers implementing AGCC and Earth Science inquiry. We recommend the scientific community continue to collaborate with educational researchers to focus on developing those inquiry technologies and curricula that use realistic scientific processes from AGCC research and/or the methods for determining how human society should respond to global change.
- Published
- 2016
- Full Text
- View/download PDF
6. Using Climate Models to Learn About Global Climate Change: Investigating the Phenomenon of Increasing Surface Air Temperatures Using a Global Climate Modeling Approach
- Author
-
Bhattacharya, Devarati, Steward, Kimberly Carroll, Chandler, Mark, and Forbes, Cory
- Abstract
To enhance teaching and learning about Earth's climate and global climate change (GCC) in secondary science classrooms, the authors are engaged in a four-year, National Science Foundation (NSF)-funded project to develop, implement, and evaluate a new four-week curriculum module grounded in the use of a data-driven, computer-based climate modeling toolkit--EzGCM (see Forbes et al. 2020). Instructional approaches focused on investigations grounded in climate data have been successful in improving students' understanding of the global warming phenomenon, as well as the methods scientists use to develop the evidence (e.g., Holthius, Lotan, Saltzman, Mastrandrea, and Wild 2014). However, it is challenging to obtain, analyze, understand, and present large scientific data sets and complex computer models in the classroom. Tools such as EzGCM make modeling and big data more accessible to students and more appropriate for classroom teaching and learning. However, if not integrated meaningfully, students' interactions with these data and models remains superficial (Bowen and Rodger 2008). In this article, the authors describe their approach to using models to support students' reasoning about Earth's climate and GCC through the use of EzGCM.
- Published
- 2020
7. Teaching Anthropogenic Global Climate Change (AGCC) Using Climate Models
- Author
-
Bush, Drew, Sieber, Renee, Chandler, Mark A., and Sohl, Linda E.
- Abstract
Geography educators have long taught anthropogenic global climate change (AGCC) using geospatial data, visualizations, analysis tools and models. We examined the attitudes of teachers at secondary schools, research institutions, colleges and universities tasked with teaching using one such technology. We designed a seventeen-question online survey about the National Aeronautics and Space Administration (NASA) Goddard Institute for Space Studies (GISS) Educational Global Climate Model (EdGCM) that was completed by 115 respondents. Researchers and educators at more than 150 research and educational institutions internationally have utilized EdGCM since 2005. There are numerous reasons why teaching AGCC with a global climate model (GCM) is attractive, and this study examined the successes and challenges teachers confront when implementing such educational technologies. Those in our sample provided insight into what methods and approaches proved effective in reinforcing conceptual understandings of the geographic processes that shape the Earth system. Our findings show educators are willing to use complex scientific models in their classroom but prefer those that enable genuine student research. We also found that more easily accessible online technologies pose fewer technical challenges and often are preferred by teachers to more complex climate education technologies.
- Published
- 2019
- Full Text
- View/download PDF
8. Motor vehicle towing: An analysis of injuries in a high-risk yet understudied industry
- Author
-
Chandler, Mark D. and Bunn, Terry L.
- Published
- 2019
- Full Text
- View/download PDF
9. Examining Educational Climate Change Technology: How Group Inquiry Work with Realistic Scientific Technology Alters Classroom Learning
- Author
-
Bush, Drew, Sieber, Renee, Seiler, Gale, and Chandler, Mark
- Abstract
This study with 79 students in Montreal, Quebec, compared the educational use of a National Aeronautics and Space Administration (NASA) global climate model (GCM) to climate education technologies developed for classroom use that included simpler interfaces and processes. The goal was to show how differing climate education technologies succeed and fail at getting students to evolve in their understanding of anthropogenic global climate change (AGCC). Many available climate education technologies aim to convey key AGCC concepts or Earth systems processes; the educational GCM used here aims to teach students the methods and processes of global climate modeling. We hypothesized that challenges to learning about AGCC make authentic technology-enabled inquiry important in developing accurate understandings of not just the issue but how scientists research it. The goal was to determine if student learning trajectories differed between the comparison and treatment groups based on whether each climate education technology allowed authentic scientific research. We trace learning trajectories using pre/post exams, practice quizzes, and written student reflections. To examine the reasons for differing learning trajectories, we discuss student pre/post questionnaires, student exit interviews, and 535 min of recorded classroom video. Students who worked with a GCM demonstrated learning trajectories with larger gains, higher levels of engagement, and a better idea of how climate scientists conduct research. Students who worked with simpler climate education technologies scored lower in the course because of lower levels of engagement with inquiry processes that were perceived to not actually resemble the work of climate scientists.
- Published
- 2018
- Full Text
- View/download PDF
10. 2005 Mississippi Curriculum Framework: Secondary Hotel, Restaurant, and Tourism Management. (Program CIP: 52.0901--Hospitality Administration/Management)
- Author
-
Mississippi State University, Research and Curriculum Unit, Mississippi Department of Education, Office of Vocational Education and Workforce Development, Bruce, Lady Anne, Chandler, Mark, Nichols, Raynette, and Nevill, Becky
- Abstract
Secondary vocational-technical education programs in Mississippi are faced with many challenges resulting from sweeping educational reforms at the national and state levels. Schools and teachers are increasingly being held accountable for providing true learning activities to every student in the classroom. This accountability is measured through increased requirements for mastery and attainment of competency as documented through both formative and summative assessments. The courses in this document reflect the statutory requirements as found in Section 37-3-49, Mississippi Code of 1972, as amended (Section 37-3-46). In addition, this curriculum reflects guidelines imposed by federal and state mandates (Laws, 1988, ch. 487, sec. 14; Laws, 1991, ch. 423, sec. 1; Laws, 1992, ch. 519, sec. 4 eff. from and after July 1, 1992; Carl D. Perkins Vocational Education Act III, 1998; and No Child Left Behind Act of 2001).Hotel, Restaurant, and Tourism Management includes an overview of the travel/tourism, lodging, and food service industries. The program focuses on marketing, supervisory skills, front office, reservations, bell service, housekeeping, safety, customer service, communications, food service, banquet, catering, and employability skills. Program completers are prepared to assume entry level positions in the hospitality industry or to enter advanced studies at the postsecondary level. Completers with 90 days of specialized industry work experience are eligible to obtain certification from American Hotel & Lodging Association's Educational Institute in the following Line Level areas: Bell Attendant, Concierge, Front Desk, Room Attendant, Reservationist, Banquet Server, Banquet Set-Up, Busperson, Kitchen Steward, Restaurant Server, and Room Service. Appended are: (1) American Hotel & Lodging Association's Educational Institute's Line Level Hospitality Skills Certification; (2) Academic Standards; (3) Workplace Skills for the 21st Century; and (4) National Educational Technology Standards for Students. (Contains 7 footnotes.)
- Published
- 2005
11. Pediatric vehicular heatstroke: An analysis of 296 cases from the National Fatality Review Case Reporting System.
- Author
-
Chandler, Mark D., Schnitzer, Patricia G., Dykstra, Heather K., and MacKay, J. Morag
- Subjects
CHILD death ,HEAT stroke ,RACE ,CHRONIC diseases ,LOGISTIC regression analysis ,ODDS ratio ,MULTIPLE imputation (Statistics) - Abstract
To explore the National Fatality Review Case Reporting System (NFR-CRS) as a new data source to (1) characterize pediatric vehicular heatstroke (PVH) deaths among children <15 years of age reviewed by Child Death Review teams, and (2) identify factors independently associated with common PVH scenarios and incident locations. Data for 2005–2019 were used to characterize 296 PVH deaths. Frequencies and percentages were calculated to describe child, supervisor, and incident characteristics. Multiple logistic regression with and without imputation were carried out to identify factors associated with the two outcomes of interest: PVH scenario (left in vehicle vs. gained access) and incident place (supervisor workplace vs. other locations). Odds ratios and 95% confidence intervals (OR, 95% CI) were calculated. Most children had been left unattended in vehicles (N = 225, 76.0%) and 13.5% (N = 40) had gained access independently. Children were most often male (N = 168, 56.8%), non-Hispanic White (N = 131, 44.3%), and <2 years of age (N = 172, 58.1%). Disability or chronic illness was noted for 4.7% (N = 14), 13.9% (N = 41) had a history of maltreatment, and 6.1% (N = 18) an open CPS case at the time of incident. Children left unattended were more likely to be <2 years of age (adjusted imputed OR 26.7, CI 7.3–97.2) and less likely to have an open CPS case (0.2, 0.0–0.4) and for the incident to occur at home (0.2, 0.1–0.9) compared to children who gained access. PVH deaths occurring at the supervisor's workplace were more likely to be <2 years of age (6.2, 2.4–15.8), to have occurred on a weekday (5.9, 1.7–20.9), and to have been supervised by their parent at the incident time (2.7, 1.1–6.7) compared to other locations. The results align with previous PVH findings and added new information on child race/ethnicity, CPS action, disability/chronic illness, and maltreatment. With the exception of parents being more likely to be the supervisor in incidents occurring at home, which was expected, neither supervisor characteristics nor child race/ethnicity or sex were independently significant in multiple regression, suggesting that PVH is pervasive and that education campaigns should be similarly broad. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
12. University-Level Teaching of Anthropogenic Global Climate Change (AGCC) via Student Inquiry
- Author
-
Bush, Drew, Sieber, Renee, Seiler, Gale, and Chandler, Mark
- Abstract
This paper reviews university-level efforts to improve understanding of anthropogenic global climate change (AGCC) through curricula that enable student scientific inquiry. We examined 152 refereed publications and proceedings from academic conferences and selected 26 cases of inquiry learning that overcome specific challenges to AGCC teaching. This review identifies both the strengths and weaknesses of each of these case studies. It is the first to go beyond examining the impact of specific inquiry instructional approaches to offer a synthesis of cases. We find that inquiry teaching can succeed by concretising scientific processes, providing access to global data and evidence, imparting critical and higher order thinking about AGCC science/policy and contextualising learning with places and scientific facts. We recommend educational researchers and scientists collaborate to create and refine curricula that utilise geospatial technologies, climate models and communication technologies to bring students into contact with scientists, climate data and authentic AGCC research processes. Many available science education technologies and curricula also require further research to maximise trade-offs between implementation and training costs and their educational value.
- Published
- 2017
- Full Text
- View/download PDF
13. Bringing climate scientist’s tools into classrooms to improve conceptual understandings
- Author
-
Bush, Drew, Sieber, Renee, Seiler, Gale, Chandler, Mark, and Chmura, Gail L.
- Published
- 2019
- Full Text
- View/download PDF
14. Inventory of Intertidal Marine Habitats, Boston Harbor Islands National Park Area
- Author
-
Bell, Richard, Buchsbaum, Robert, and Chandler, Mark
- Published
- 2005
15. Assessing the performance of urban forest carbon sequestration models using direct measurements of tree growth
- Author
-
Boukili, Vanessa K.S., Bebber, Daniel P., Mortimer, Tegan, Venicx, Gitte, Lefcourt, David, Chandler, Mark, and Eisenberg, Cristina
- Published
- 2017
- Full Text
- View/download PDF
16. Impact of a hospital service for adults with chronic childhood‐onset disease: A propensity weighted analysis.
- Author
-
Feeney, Colby, Chandler, Mark, Platt, Alyssa, Sun, Shifeng, Setji, Noppon, and Ming, David Y.
- Published
- 2023
- Full Text
- View/download PDF
17. Refugia for Endangered Fishes from an Introduced Predator in Lake Nabugabo, Uganda
- Author
-
Chapman, Lauren J., Chapman, Colin A., Ogutu-Ohwayo, Richard, Chandler, Mark, Kaufman, Les, and Keiter, Amanda E.
- Published
- 1996
18. Bookshop.org paves the way for UK opening after success in the US
- Author
-
Chandler, Mark
- Subjects
Epidemics -- Economic aspects -- United Kingdom ,COVID-19 -- Economic aspects ,Bookstores -- Services -- Forecasts and trends ,Market trend/market analysis ,Business, international ,Publishing industry ,Retail industry - Abstract
A new retail site billed as an alternative to Amazon looks set to arrive in the UK in time for Christmas. Will it be a lifeline for UK independents struggling [...]
- Published
- 2020
19. The hydrological cycle and ocean circulation of the Maritime Continent in the Pliocene: results from PlioMIP2.
- Author
-
Ren, Xin, Lunt, Daniel J., Hendy, Erica, von der Heydt, Anna, Abe-Ouchi, Ayako, Otto-Bliesner, Bette, Williams, Charles J. R., Stepanek, Christian, Guo, Chuncheng, Chandan, Deepak, Lohmann, Gerrit, Tindall, Julia C., Sohl, Linda E., Chandler, Mark A., Kageyama, Masa, Baatsen, Michiel L. J., Tan, Ning, Zhang, Qiong, Feng, Ran, and Hunter, Stephen
- Subjects
OCEAN circulation ,HYDROLOGIC cycle ,OCEAN temperature ,ATMOSPHERIC carbon dioxide ,PLIOCENE Epoch ,SEAWATER salinity - Abstract
The Maritime Continent (MC) forms the western boundary of the tropical Pacific Ocean, and relatively small changes in this region can impact the climate locally and remotely. In the mid-Piacenzian warm period of the Pliocene (mPWP; 3.264 to 3.025 Ma) atmospheric CO 2 concentrations were ∼ 400 ppm, and the subaerial Sunda and Sahul shelves made the land–sea distribution of the MC different to today. Topographic changes and elevated levels of CO 2 , combined with other forcings, are therefore expected to have driven a substantial climate signal in the MC region at this time. By using the results from the Pliocene Model Intercomparison Project Phase 2 (PlioMIP2), we study the mean climatic features of the MC in the mPWP and changes in Indonesian Throughflow (ITF) with respect to the preindustrial. Results show a warmer and wetter mPWP climate of the MC and lower sea surface salinity in the surrounding ocean compared with the preindustrial. Furthermore, we quantify the volume transfer through the ITF; although the ITF may be expected to be hindered by the subaerial shelves, 10 out of 15 models show an increased volume transport compared with the preindustrial. In order to avoid undue influence from closely related models that are present in the PlioMIP2 ensemble, we introduce a new metric, the multi-cluster mean (MCM), which is based on cluster analysis of the individual models. We study the effect that the choice of MCM versus the more traditional analysis of multi-model mean (MMM) and individual models has on the discrepancy between model results and data. We find that models, which reproduce modern MC climate well, are not always good at simulating the mPWP climate anomaly of the MC. By comparing with individual models, the MMM and MCM reproduce the preindustrial sea surface temperature (SST) of the reanalysis better than most individual models and produce less discrepancy with reconstructed sea surface temperature anomalies (SSTA) than most individual models in the MC. In addition, the clusters reveal spatial signals that are not captured by the MMM, so that the MCM provides us with a new way to explore the results from model ensembles that include similar models. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
20. Unraveling the mechanisms and implications of a stronger mid-Pliocene Atlantic Meridional Overturning Circulation (AMOC) in PlioMIP2
- Author
-
Weiffenbach, Julia E., Baatsen, Michiel L. J., Dijkstra, Henk A., Heydt, Anna S. von der, Abe-Ouchi, Ayako, Brady, Esther C., Chan, Wing-Le, Chandan, Deepak, Chandler, Mark A., Contoux, Camille, Feng, Ran, Guo, Chuncheng, Han, Zixuan, Haywood, Alan M., Li, Qiang, Li, Xiangyu, Lohmann, Gerrit, Lunt, Daniel J., Nisancioglu, Kerim H., Otto-Bliesner, Bette L., Peltier, W. Richard, Ramstein, Gilles, Sohl, Linda E., Stepanek, Christian, Tan, Ning, Tindall, Julia C., Williams, Charles J. R., Zhang, Qiong, Zhang, Zhongshi, Sub Physical Oceanography, Sub Dynamics Meteorology, Marine and Atmospheric Research, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), 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), Modélisation du climat (CLIM), 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), Sub Physical Oceanography, Sub Dynamics Meteorology, and Marine and Atmospheric Research
- Subjects
Ocean ,Simulations ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,Thermohaline circulation ,Global and Planetary Change ,Climate Research ,Greenhouse ,Palaeontology ,Stratigraphy ,Global climate ,Paleontology ,Fresh-water ,Klimatforskning ,Earth system model ,Sensitivity ,Heat-transport ,Sea-ice ,[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment - Abstract
The mid-Pliocene warm period (3.264-3.025 Ma) is the most recent geological period in which the atmospheric CO2 concentration was approximately equal to the concentration we measure today (ca. 400 ppm). Sea surface temperature (SST) proxies indicate above-average warming over the North Atlantic in the mid-Pliocene with respect to the pre-industrial period, which may be linked to an intensified Atlantic Meridional Overturning Circulation (AMOC). Earlier results from the Pliocene Model Intercomparison Project Phase 2 (PlioMIP2) show that the ensemble simulates a stronger AMOC in the mid-Pliocene than in the pre-industrial. However, no consistent relationship between the stronger mid-Pliocene AMOC and either the Atlantic northward ocean heat transport (OHT) or average North Atlantic SSTs has been found. In this study, we look further into the drivers and consequences of a stronger AMOC in mid-Pliocene compared to pre-industrial simulations in PlioMIP2. We find that all model simulations with a closed Bering Strait and Canadian Archipelago show reduced freshwater transport from the Arctic Ocean into the North Atlantic. This contributes to an increase in salinity in the subpolar North Atlantic and Labrador Sea that can be linked to the stronger AMOC in the mid-Pliocene. To investigate the dynamics behind the ensembles variable response of the total Atlantic OHT to the stronger AMOC, we separate the Atlantic OHT into two components associated with either the overturning circulation or the wind-driven gyre circulation. While the ensemble mean of the overturning component is increased significantly in magnitude in the mid-Pliocene, it is partly compensated by a reduction in the gyre component in the northern subtropical gyre region. This indicates that the lack of relationship between the total OHT and AMOC is due to changes in OHT by the subtropical gyre. The overturning and gyre components should therefore be considered separately to gain a more complete understanding of the OHT response to a stronger mid-Pliocene AMOC. In addition, we show that the AMOC exerts a stronger influence on North Atlantic SSTs in the mid-Pliocene than in the pre-industrial, providing a possible explanation for the improved agreement of the PlioMIP2 ensemble mean SSTs with reconstructions in the North Atlantic. Funding Agencies|Netherlands Earth System Science Centre (OCW grant) [024.002.001]
- Published
- 2023
21. Building capacity in biodiversity monitoring at the global scale
- Author
-
Schmeller, Dirk S., Böhm, Monika, Arvanitidis, Christos, Barber-Meyer, Shannon, Brummitt, Neil, Chandler, Mark, Chatzinikolaou, Eva, Costello, Mark J., Ding, Hui, García-Moreno, Jaime, Gill, Mike, Haase, Peter, Jones, Miranda, Juillard, Romain, Magnusson, William E., Martin, Corinne S., McGeoch, Melodie, Mihoub, Jean-Baptiste, Pettorelli, Nathalie, Proença, Vânia, Peng, Cui, Regan, Eugenie, Schmiedel, Ute, Simaika, John P., Weatherdon, Lauren, Waterman, Carly, Xu, Haigen, and Belnap, Jayne
- Published
- 2017
- Full Text
- View/download PDF
22. Bringing Climate Scientist's Tools into Classrooms to Improve Conceptual Understandings
- Author
-
Bush, Drew, Sieber, Renee, Seiler, Gale, Chandler, Mark, and Chmura, Gail L
- Subjects
Meteorology And Climatology - Abstract
Efforts to address anthropogenic global climate change (AGCC) require public understanding of Earth and climate science. To meet this need, educational reforms and prominent scientists have called for instructional approaches that teach students how climate scientists examine AGCC. Yet, only a few educational studies have reported clear empirical results on what instructional approaches and climate education technologies best accomplish this goal. This manuscript presents detailed analysis and statistically significant results on the educational impact pre to post of students learning to use a National Aeronautics and Space Administration (NASA) global climate model (GCM). This series of case studies demonstrates that differing instructional approaches and climate education technologies result in differing levels of understanding of AGCC and ability to engage with policies addressing it. Students who learned the scientific process of climate modeling scored significantly higher pre to post on exams (quantitatively) and gained more complete conceptual understandings of the issue (qualitatively). Yet, teaching students to conduct research with complex technology can be difficult. This study also found lecture-based learning better improved recall of facts about GCMs tested by multiple-choice questions. Our findings indicate what educational systems and related technologies might provide the public with the conceptual understandings necessary to engage in the political debate over AGCC.
- Published
- 2018
- Full Text
- View/download PDF
23. Climate Lecture 20: The Educational Global Climate Model (EdGCM)
- Author
-
Chandler, Mark A
- Subjects
Meteorology And Climatology - Abstract
Climate change will profoundly impact Earth's environmental health as well as the world's economic and geopolitical landscape over the coming decades. The impacts of climate change are, in fact, already beginning to be experienced and have the potential to affect every living plant and animal on Earth within decades. Given this reality, every citizen of this planet should have the right to knowledge about the Earth's climate system and have the option to adapt to, or help mitigate the profound changes that are coming. In addition, a portion of the workforce needs to be capable of interpreting and analyzing climate information because, since the impacts of climate change will be widespread, pervasive, and continue to change over time, more professions will be interacting with climate data. We are already at, or past, the point where educators and their students require access to the scientific and technological resources - computer models, data, and visualization tools - that scientists use daily in the study of climate change. Although scientists use many methods to study Earth's climate system, global climate models (GCMs) have become the primary tools for exploring the complex interactions between components of the entire system: atmosphere, oceans, and land. GCMs are used to make projections of future climate change, to simulate climates of the past, and even to help scientists look for life on other planets. Like any model, a GCM can help people evaluate actions before they are taken. Like Business Intelligence software, they are Climate Intelligence tools. Unfortunately, GCMs are black boxes to most people. A previous chapter in this book by Gary Russell, entitled Building a Climate Model, is one example of the growing body of literature aimed at the general public describing the inner workings of global climate models. This literature goes a long way toward explaining climate model fundamentals. However, it will not be enough to alleviate their black-box nature unless people are afforded hands-on, authentic learning experiences as well.
- Published
- 2018
- Full Text
- View/download PDF
24. Fig Tree beats eight to Who Wants Normal? Guardian reporter Frances Ryan's new book Who Wants Normal? has gone to Fig Tree after a hotly contested auction with nine publishers bidding for rights
- Author
-
Chandler, Mark
- Subjects
Auctions ,Publishing industry ,Publishing industry ,Business, international ,Retail industry - Abstract
Fig Tree has won a six figure, nine-way auction for award-winning journalist, author and broadcaster Frances Ryan's Who Wants Normal? The Disabled Girl's Guide to Life. Helen Garnons-Williams, publishing director, [...]
- Published
- 2022
25. International citizen science: making the local global
- Author
-
Chandler, Mark, Bebber, Daniel P, Castro, Sebastian, Lowman, Margaret D, Muoria, Paul, Oguge, Nicholas, and Rubenstein, Daniel I
- Published
- 2012
26. Analysis of management and site factors to improve the sustainability of smallholder coffee production in Tarrazú, Costa Rica
- Author
-
Castro-Tanzi, Sebastian, Dietsch, Thomas, Urena, Natalia, Vindas, Lucia, and Chandler, Mark
- Published
- 2012
- Full Text
- View/download PDF
27. Equilibrium Temperatures and Albedos of Habitable Earth-Like Planets in a Coupled Atmosphere-Ocean GCM
- Author
-
Del Genio, Anthony, Way, Michael, Amundsen, David, Sohl, Linda, Fujii, Yuka, Ebihara, Yuka, Kiang, Nancy, Chandler, Mark, Aleinov, Igor, and Kelley, Maxwell
- Subjects
Lunar And Planetary Science And Exploration - Abstract
The potential habitability of detected exoplanets is typically assessed using the concept of equilibrium temperature (T[subscript] e) based on cloud-free 1-D models with assumed albedo equal to Earth's (0.3) to determine whether a planet lies in the habitable zone. Incident stellar flux appears to be a better metric for stars unlike the Sun. These estimates, however, ignore the effect of clouds on planetary albedo and the fact that the climates of synchronously rotating planets are not well predicted by 1-D models. Given that most planet candidates that will be detected in the next few years will be tidally locked and orbiting M stars, how might the habitable zone e tailored to better in-form characterization with scarce observing resources?
- Published
- 2017
28. Effect of individual components on system's reliability : A case of web‐based US Federal Highway Administration project recommendation and approval software
- Author
-
Chandler, Mark R. and Affan Badar, M.
- Published
- 2009
- Full Text
- View/download PDF
29. Reduced El Niño variability in the mid-Pliocene according to the PlioMIP2 ensemble
- Author
-
Sathyanadh, Anusha, Monteil, Guillaume, Scholze, Marko, Klosterhalfen, Anne, Laudon, Hjalmar, Wu, Zhendong, Gerbig, Christoph, Peters, Wouter, Bastrikov, Vladislav, Nilsson, Mats, Peichl, Matthias, Oldeman, Arthur, Baatsen, Michiel, von Der Heydt, Anna, Dijkstra, Henk, Tindall, Julia, Abe-Ouchi, Ayako, Booth, Alice, Brady, Esther, Chan, Wing-Le, Chandan, Deepak, Chandler, Mark, Contoux, Camille, Feng, Ran, Guo, Chuncheng, Haywood, Alan, Hunter, Stephen, Kamae, Youichi, Li, Qiang, Li, Xiangyu, Lohmann, Gerrit, Lunt, Daniel, Nisancioglu, Kerim, Otto-Bliesner, Bette, Peltier, W, Pontes, Gabriel, Ramstein, Gilles, Sohl, Linda, Stepanek, Christian, Tan, Ning, Zhang, Qiong, Zhang, Zhongshi, Wainer, Ilana, Williams, Charles, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), 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), Modélisation du climat (CLIM), 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), This research has been supported by the Netherlands Earth System Science Centre (OCW (grant no. 024.002.001)), The work by Arthur M. Oldeman, Anna S. von der Heydt, Michiel L. J. Baatsen and Henk A. Dijkstra was carried out under the program of the Netherlands Earth System Science Centre (NESSC), financially supported by the Ministry of Education, Culture and Science (OCW grant no. 024.002.001). Simulations with CCSM4-Utr were performed at the SURFsara Dutch national computing facilities and were sponsored by NWO-EW (Netherlands Organisation for Scientific Research, Exact Sciences) (project no. 17189).Alan M. Haywood, Julia C. Tindall and Stephen J. Hunter acknowledge the FP7 Ideas programme from the European Research Council (grant no. PLIO-ESS, 278636), the Past Earth Network (EPSRC grant no. EP/M008.363/1) and the University of Leeds Advanced Research Computing service. Julia C. Tindall was also supported through the Centre for Environmental Modelling and Computation (CEMAC), University of Leeds.Bette L. Otto-Bliesner, Esther C. Brady and Ran Feng acknowledge that material for their participation is based upon work supported by the National Center for Atmospheric Research, which is a major facility sponsored by the National Science Foundation (NSF) (cooperative agreement no. 1852977 and NSF OPP grant no. 1418411). Ran Feng is also supported by NSF grant no. 1903650. The CESM project is supported primarily by the National Science Foundation. Computing and data storage resources, including the Cheyenne supercomputer (https://doi.org/10.5065/D6RX99HX), were provided by the Computational and Information Systems Laboratory (CISL) at NCAR. NCAR is sponsored by the National Science Foundation.Ning Tan, Camille Contoux and Gilles Ramstein were granted access to the HPC resources of TGCC under the allocations 2016-A0030107732, 2017-R0040110492 and 2018-R0040110492 (gencmip6) and 2019-A0050102212 (gen2212) provided by GENCI. The IPSL-CM6 team of the IPSL Climate Modelling Centre (https://cmc.ipsl.fr/, last access: 28 April 2021) is acknowledged for having developed, tested, evaluated and tuned the IPSL climate model, as well as having performed and published the CMIP6 experiments.Christian Stepanek acknowledges funding from the Helmholtz Climate Initiative REKLIM. Christian Stepanek and Gerrit Lohmann acknowledge funding via the Alfred Wegener Institute’s research programme Marine, Coastal and Polar Systems.Qiong Zhang acknowledges support from the Swedish Research Council (2013-06476 and 2017-04232). Simulations with EC-Earth were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC) at the National Supercomputer Centre (NSC).Wing-Le Chan and Ayako Abe-Ouchi acknowledge funding from JSPS (KAKENHI grant no. 17H06104 and MEXT KAKENHI grant no. 17H06323). Their simulations with MIROC4m were performed on the Earth Simulator at JAMSTEC, Yokohama, Japan.W. Richard Peltier and Deepak Chandan wish to acknowledge that data they have contributed from the CCSM4-UoT model was produced with the support of Canadian NSERC Discovery Grant A9627 t WRP, and they wish to acknowledge the support of the SciNet HPC Consortium for providing computing facilities. SciNet is funded by the Canada Foundation for Innovation under the auspices of Compute Canada, the Government of Ontario, the Ontario Research Fund – Research Excellence and the University of Toronto.Zhongshi Zhang and Xiangyu Li acknowledge financial support from the National Natural Science Foundation of China (grant no. 42005042), the China Scholarship Council (201804910023) and the China Postdoctoral Science Foundation (project no. 2015M581154). The NorESM simulations benefitted from resources provided by UNINETT Sigma2 – the National Infrastructure for High Performance Computing and Data Storage in Norway.Charles J. R. Williams and Dan Lunt are thankful for NERC grant NE/P01903X/1 and the NEXCS High Performance Computing facility funded by the Natural Environment Research Council and delivered by the Met Office.Gabriel M. Pontes and Ilana Wainer acknowledge the São Paulo Research Foundation (FAPESP 2016/23670-0)., 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)-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), Swedish University of Agricultural Sciences (SLU), Department of Physical Geography and Ecosystem Science [Lund], Lund University [Lund], Max Planck Institute for Biogeochemistry (MPI-BGC), Max-Planck-Gesellschaft, Meteorology and Air Quality Department [Wageningen] (MAQ), Wageningen University and Research [Wageningen] (WUR), and The work by Arthur M. Oldeman, Anna S. von der Heydt, Michiel L. J. Baatsen and Henk A. Dijkstra was carried out under the program of the Netherlands Earth System Science Centre (NESSC), financially supported by the Ministry of Education, Culture and Science (OCW grant no. 024.002.001). Simulations with CCSM4-Utr were performed at the SURFsara Dutch national computing facilities and were sponsored by NWO-EW (Netherlands Organisation for Scientific Research, Exact Sciences) (project no. 17189).Alan M. Haywood, Julia C. Tindall and Stephen J. Hunter acknowledge the FP7 Ideas programme from the European Research Council (grant no. PLIO-ESS, 278636), the Past Earth Network (EPSRC grant no. EP/M008.363/1) and the University of Leeds Advanced Research Computing service. Julia C. Tindall was also supported through the Centre for Environmental Modelling and Computation (CEMAC), University of Leeds.Bette L. Otto-Bliesner, Esther C. Brady and Ran Feng acknowledge that material for their participation is based upon work supported by the National Center for Atmospheric Research, which is a major facility sponsored by the National Science Foundation (NSF) (cooperative agreement no. 1852977 and NSF OPP grant no. 1418411). Ran Feng is also supported by NSF grant no. 1903650. The CESM project is supported primarily by the National Science Foundation. Computing and data storage resources, including the Cheyenne supercomputer (https://doi.org/10.5065/D6RX99HX), were provided by the Computational and Information Systems Laboratory (CISL) NCAR . NCAR is sponsored by the National Science Foundation.Ning Tan, Camille Contoux and Gilles Ramstein were granted access to the HPC resources of TGCC under the allocations 2016-A0030107732, 2017-R0040110492 and 2018-R0040110492 (gencmip6) and 2019-A0050102212 (gen2212) provided by GENCI. The IPSL-CM6 team of the IPSL Climate Modelling Centre (https://cmc.ipsl.fr/, last access: 28 April 2021) is acknowledged for having developed, tested, evaluated and tuned the IPSL climate model, as well as having performed and published the CMIP6 experiments.Christian Stepanek acknowledges funding from the Helmholtz Climate Initiative REKLIM. Christian Stepanek and Gerrit Lohmann acknowledge funding via the Alfred Wegener Institute’s research programme Marine, Coastal and Polar Systems.Qiong Zhang acknowledges support from the Swedish Research Council (2013-06476 and 2017-04232). Simulations with EC-Earth were performed on resources provided by the Swedish National Infrastructure for Computing (SNIC) at the National Supercomputer Centre (NSC).Wing-Le Chan and Ayako Abe-Ouchi acknowledge funding from JSPS (KAKENHI grant no. 17H06104 and MEXT KAKENHI grant no. 17H06323). Their simulations with MIROC4m were performed on the Earth Simulator at JAMSTEC, Yokohama, Japan.W. Richard Peltier and Deepak Chandan wish to acknowledge that data they have contributed from the CCSM4-UoT model was produced with the support of Canadian NSERC Discovery Grant A9627 t WRP, and they wish to acknowledge the support of the SciNet HPC Consortium for providing computing facilities. SciNet is funded by the Canada Foundation for Innovation under the auspices of Compute Canada, the Government of Ontario, the Ontario Research Fund – Research Excellence and the University of Toronto.Zhongshi Zhang and Xiangyu Li acknowledge financial support from the National Natural Science Foundation of China (grant no. 42005042), the China Scholarship Council (201804910023) and the China Postdoctoral Science Foundation (project no. 2015M581154). The NorESM simulations benefitted from resources provided by UNINETT Sigma2 – the National Infrastructure for High Performance Computing and Data Storage in Norway.Charles J. R. Williams and Dan Lunt are thankful for NERC grant NE/P01903X/1 and the NEXCS High Performance Computing facility funded by the Natural Environment Research Council and delivered by the Met Office.Gabriel M. Pontes and Ilana Wainer acknowledge the São Paulo Research Foundation (FAPESP 2016/23670-0).
- Subjects
010504 meteorology & atmospheric sciences ,Stratigraphy ,0207 environmental engineering ,Empirical orthogonal functions ,02 engineering and technology ,01 natural sciences ,Environmental protection ,Environmental pollution ,TD169-171.8 ,GE1-350 ,14. Life underwater ,020701 environmental engineering ,[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces, environment ,0105 earth and related environmental sciences ,[SDU.OCEAN]Sciences of the Universe [physics]/Ocean, Atmosphere ,Global and Planetary Change ,Spatial structure ,Palaeontology ,Ensemble average ,Paleontology ,Environmental sciences ,Sea surface temperature ,Amplitude ,El Niño Southern Oscillation ,El Niño ,TD172-193.5 ,13. Climate action ,Climatology ,Environmental science ,Climate model ,OCEANOGRAFIA - Abstract
The mid-Pliocene warm period (3.264–3.025 Ma) is the most recent geological period during which atmospheric CO2 levels were similar to recent historical values (∼400 ppm). Several proxy reconstructions for the mid-Pliocene show highly reduced zonal sea surface temperature (SST) gradients in the tropical Pacific Ocean, indicating an El Niño-like mean state. However, past modelling studies do not show these highly reduced gradients. Efforts to understand mid-Pliocene climate dynamics have led to the Pliocene Model Intercomparison Project (PlioMIP). Results from the first phase (PlioMIP1) showed clear El Niño variability (albeit significantly reduced) and did not show the greatly reduced time-mean zonal SST gradient suggested by some of the proxies. In this work, we study El Niño–Southern Oscillation (ENSO) variability in the PlioMIP2 ensemble, which consists of additional global coupled climate models and updated boundary conditions compared to PlioMIP1. We quantify ENSO amplitude, period, spatial structure and “flavour”, as well as the tropical Pacific annual mean state in mid-Pliocene and pre-industrial simulations. Results show a reduced ENSO amplitude in the model-ensemble mean (−24 %) with respect to the pre-industrial, with 15 out of 17 individual models showing such a reduction. Furthermore, the spectral power of this variability considerably decreases in the 3–4-year band. The spatial structure of the dominant empirical orthogonal function shows no particular change in the patterns of tropical Pacific variability in the model-ensemble mean, compared to the pre-industrial. Although the time-mean zonal SST gradient in the equatorial Pacific decreases for 14 out of 17 models (0.2 ∘C reduction in the ensemble mean), there does not seem to be a correlation with the decrease in ENSO amplitude. The models showing the most “El Niño-like” mean state changes show a similar ENSO amplitude to that in the pre-industrial reference, while models showing more “La Niña-like” mean state changes generally show a large reduction in ENSO variability. The PlioMIP2 results show a reasonable agreement with both time-mean proxies indicating a reduced zonal SST gradient and reconstructions indicating a reduced, or similar, ENSO variability.
- Published
- 2021
30. Surface Temperatures of the Mid-Pliocene North Atlantic Ocean: Implications for Future Climate
- Author
-
Dowsett, Harry J., Chandler, Mark A., and Robinson, Marci M.
- Published
- 2009
- Full Text
- View/download PDF
31. Mid-Pliocene Sea Level and Continental Ice Volume Based on Coupled Bent Hie Mg/Ca Palaeotemperatures and Oxygen Isotopes
- Author
-
Dwyer, Gary S. and Chandler, Mark A.
- Published
- 2009
- Full Text
- View/download PDF
32. The hydrological cycle and ocean circulation of the Maritime Continent in the mid-Pliocene: results from PlioMIP2.
- Author
-
Xin Ren, Lunt, Daniel J., Hendy, Erica, von der Heydt, Anna, Abe-Ouchi, Ayako, Otto-Bliesner, Bette, Williams, Charles J. R., Stepanek, Christian, Chuncheng Guo, Chandan, Deepak, Lohmann, Gerrit, Tindall, Julia C., Sohl, Linda E., Chandler, Mark A., Kageyama, Masa, Baatsen, Michiel L. J., Ning Tan, Qiong Zhang, Ran Feng, and Wing-Le Chan
- Abstract
The Maritime Continent (MC) forms the western boundary of the tropical Pacific Ocean, and relatively small changes in this region can impact the climate locally and remotely. In the mid-Pliocene (from 3.264 to 3.025 million years before present), atmospheric CO
2 concentrations were ~ 400 ppm, and the subaerial Sunda and Sahul shelves made the land-sea distribution of the MC different to today. Topographic changes and elevated levels of CO2 , combined with other forcings, are therefore expected to have driven a substantial climate signal in the MC region at this time. By using the results from the Pliocene Model Intercomparison Project phase 2 (PlioMIP2) we study the mean climatic features of the MC in the mid-Pliocene and changes in Indonesian Throughflow (ITF) with respect to preindustrial. Results show a warmer and wetter mid-Pliocene climate of the MC and lower sea surface salinity in the surrounding ocean compared with preindustrial. Furthermore, quantify the volume transfer through the ITF; although the ITF may be expected to be hindered by the subaerial shelves, out of 15 models show an increased volume transport compared with preindustrial. In order to avoid undue influence from closely-related models that are present in the PlioMIP2 ensemble, we introduce a new metric - the multi-cluster mean (MCM), based on cluster analysis of the individual models. We study the effect that the choice of MCM versus the more traditional analysis of multi-model mean (MMM) and individual models has on the discrepancy between model results and reconstructed proxy data. The clusters reveal spatial signals that are not captured by the MMM, that the MCM provides us with a new way to explore the results from model ensemble that include similar models. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF
33. The hydrological cycle and ocean circulation of the Maritime Continent in the mid-Pliocene: results from PlioMIP2.
- Author
-
Ren, Xin, Lunt, Daniel J., Hendy, Erica, von der Heydt, Anna, Abe-Ouchi, Ayako, Otto-Bliesner, Bette L., Williams, Charles J. R., Stepanek, Christian, Guo, Chuncheng, Chandan, Deepak, Lohmann, Gerrit, Tindall, Julia C., Sohl, Linda E., Chandler, Mark A., Kageyama, Masa, Baatsen, Michiel L. J., Tan, Ning, Zhang, Qiong, Feng, Ran, and Chan, Wing-Le
- Subjects
HYDROLOGIC cycle ,OCEAN temperature ,SALINITY ,CLUSTER analysis (Statistics) - Abstract
The Maritime Continent (MC) forms the western boundary of the tropical Pacific Ocean, and relatively small changes in this region can impact the climate locally and remotely. In the mid-Pliocene (from 3.264 to 3.025 million years before present), atmospheric CO
2 concentrations were ~ 400 ppm, and the subaerial Sunda and Sahul shelves made the land-sea distribution of the MC different to today. Topographic changes and elevated levels of CO2 , combined with other forcings, are therefore expected to have driven a substantial climate signal in the MC region at this time. By using the results from the Pliocene Model Intercomparison Project phase 2 (PlioMIP2) we study the mean climatic features of the MC in the mid-Pliocene and changes in Indonesian Throughflow (ITF) with respect to preindustrial. Results show a warmer and wetter mid-Pliocene climate of the MC and lower sea surface salinity in the surrounding ocean compared with preindustrial. Furthermore, we quantify the volume transfer through the ITF; although the ITF may be expected to be hindered by the subaerial shelves, 10 out of 15 models show an increased volume transport compared with preindustrial. In order to avoid undue influence from closely-related models that are present in the PlioMIP2 ensemble, we introduce a new metric – the multi-cluster mean (MCM), based on cluster analysis of the individual models. We study the effect that the choice of MCM versus the more traditional analysis of multi-model mean (MMM) and individual models has on the discrepancy between model results and reconstructed proxy data. The clusters reveal spatial signals that are not captured by the MMM, so that the MCM provides us with a new way to explore the results from model ensemble that include similar models. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF
34. The countdown is on as booksellers put measures in place to reopen in April: With bookshops in England and Wales allowed to reopen their doors on 12th April, and Scottish shops two weeks later, retailers shared their thoughts on returning and how they will safeguard customers and staff
- Author
-
Chandler, Mark and Comerford, Ruth
- Subjects
Retail industry -- Industry forecasts ,Epidemics -- Control -- Economic aspects -- United Kingdom ,Book publishing -- Industry forecasts ,Business, international ,Publishing industry ,Retail industry - Abstract
Booksellers across the UK are eagerly awaiting reopening in April, with some already looking forward to the return of live events further down the line, following months of lockdown. Many [...]
- Published
- 2021
35. The PRISM4 (mid-Piacenzian) Palaeoenvironmental Reconstruction
- Author
-
Dowsett, Harry, Dolan, Aisling, Rowley, David, Moucha, Robert, Forte, Alessandro M, Mitrovica, Jerry X, Pound, Matthew, Salzmann, Ulrich, Robinson, Marci, Chandler, Mark, Foley, Kevin, and Haywood, Alan
- Subjects
Meteorology And Climatology - Abstract
The mid-Piacenzian is known as a period of relative warmth when compared to the present day. A comprehensive understanding of conditions during the Piacenzian serves as both a conceptual model and a source for boundary conditions as well as means of verification of global climate model experiments. In this paper we present the PRISM4 reconstruction, a paleoenvironmental reconstruction of the mid-Piacenzian (approximately 3 Ma) containing data for paleogeography, land and sea ice, sea-surface temperature, vegetation, soils, and lakes. Our retrodicted paleogeography takes into account glacial isostatic adjustments and changes in dynamic topography. Soils and lakes, both significant as land surface features, are introduced to the PRISM reconstruction for the first time. Sea-surface temperature and vegetation reconstructions are unchanged but now have confidence assessments. The PRISM4 reconstruction is being used as boundary condition data for the Pliocene Model Intercomparison Project Phase 2 (PlioMIP2) experiments.
- Published
- 2016
- Full Text
- View/download PDF
36. Arctic Sea Ice Simulation in the PlioMIP Ensemble
- Author
-
Howell, Fergus W, Haywood, Alan M, Otto-Bliesner, Bette L, Bragg, Fran, Chan, Wing-Le, Chandler, Mark A, Contoux, Camille, Kamae, Youichi, Abe-Ouchi, Ayako, Rosenbloom, Nan A, Stepanek, Christian, and Zhang, Zhongshi
- Subjects
Meteorology And Climatology - Abstract
Eight general circulation models have simulated the mid-Pliocene warm period (mid-Pliocene, 3.264 to 3.025 Ma) as part of the Pliocene Modelling Intercomparison Project (PlioMIP). Here, we analyse and compare their simulation of Arctic sea ice for both the pre-industrial period and the mid-Pliocene. Mid-Pliocene sea ice thickness and extent is reduced, and the model spread of extent is more than twice the pre-industrial spread in some summer months. Half of the PlioMIP models simulate ice-free conditions in the mid-Pliocene. This spread amongst the ensemble is in line with the uncertainties amongst proxy reconstructions for mid-Pliocene sea ice extent. Correlations between mid-Pliocene Arctic temperatures and sea ice extents are almost twice as strong as the equivalent correlations for the pre-industrial simulations. The need for more comprehensive sea ice proxy data is highlighted, in order to better compare model performances.
- Published
- 2016
- Full Text
- View/download PDF
37. The Pliocene Model Intercomparison Project (PlioMIP) Phase 2: Scientific Objectives and Experimental Design
- Author
-
Haywood, Alan M, Dowsett, Harry J, Dolan, Aisling M, Rowley, David, Abe-Ouchi, Ayako, Otto-Bliesner, Bette, Chandler, Mark A, Hunter, Stephen J, Lunt, Daniel J, Pound, Matthew, and Salzmann, Ulrich
- Subjects
Meteorology And Climatology - Abstract
The Pliocene Model Intercomparison Project (PlioMIP) is a co-ordinated international climate modelling initiative to study and understand climate and environments of the Late Pliocene, as well as their potential relevance in the context of future climate change. PlioMIP examines the consistency of model predictions in simulating Pliocene climate and their ability to reproduce climate signals preserved by geological climate archives. Here we provide a description of the aim and objectives of the next phase of the model intercomparison project (PlioMIP Phase 2), and we present the experimental design and boundary conditions that will be utilized for climate model experiments in Phase 2. Following on from PlioMIP Phase 1, Phase 2 will continue to be a mechanism for sampling structural uncertainty within climate models. However, Phase 1 demonstrated the requirement to better understand boundary condition uncertainties as well as uncertainty in the methodologies used for data-model comparison. Therefore, our strategy for Phase 2 is to utilize state-of-the-art boundary conditions that have emerged over the last 5 years. These include a new palaeogeographic reconstruction, detailing ocean bathymetry and land-ice surface topography. The ice surface topography is built upon the lessons learned from offline ice sheet modelling studies. Land surface cover has been enhanced by recent additions of Pliocene soils and lakes. Atmospheric reconstructions of palaeo-CO2 are emerging on orbital timescales, and these are also incorporated into PlioMIP Phase 2. New records of surface and sea surface temperature change are being produced that will be more temporally consistent with the boundary conditions and forcings used within models. Finally we have designed a suite of prioritized experiments that tackle issues surrounding the basic understanding of the Pliocene and its relevance in the context of future climate change in a discrete way.
- Published
- 2016
- Full Text
- View/download PDF
38. Mid-Pliocene West African Monsoon rainfall as simulated in the PlioMIP2 ensemble
- Author
-
Berntell, Ellen, Zhang, Qiong, Li, Qiang, Haywood, Alan M., Tindall, Julia C., Hunter, Stephen J., Zhang, Zhongshi, Li, Xiangyu, Guo, Chuncheng, Nisancioglu, Kerim H., Stepanek, Christian, Lohmann, Gerrit, Sohl, Linda E., Chandler, Mark A., Tan, Ning, Contoux, Camille, Ramstein, Gilles, Baatsen, Michiel L.J., Von Der Heydt, Anna S., Chandan, Deepak, Peltier, William Richard, Abe-Ouchi, Ayako, Chan, Wing Le, Kamae, Youichi, Williams, Charles J.R., Lunt, Daniel J., Feng, Ran, Otto-Bliesner, Bette L., Brady, Esther C., Sub Dynamics Meteorology, Sub Physical Oceanography, and Marine and Atmospheric Research
- Subjects
Global and Planetary Change ,Stratigraphy ,Palaeontology - Abstract
The mid-Pliocene warm period (mPWP; g1/43.2 million years ago) is seen as the most recent time period characterized by a warm climate state, with similar to modern geography and g1/4400g€¯ppmv atmospheric CO2 concentration, and is therefore often considered an interesting analogue for near-future climate projections. Paleoenvironmental reconstructions indicate higher surface temperatures, decreasing tropical deserts, and a more humid climate in West Africa characterized by a strengthened West African Monsoon (WAM). Using model results from the second phase of the Pliocene Modelling Intercomparison Project (PlioMIP2) ensemble, we analyse changes of the WAM rainfall during the mPWP by comparing them with the control simulations for the pre-industrial period. The ensemble shows a robust increase in the summer rainfall over West Africa and the Sahara region, with an average increase of 2.5g€¯mm/d, contrasted by a rainfall decrease over the equatorial Atlantic. An anomalous warming of the Sahara and deepening of the Saharan Heat Low, seen in >90g€¯% of the models, leads to a strengthening of the WAM and an increased monsoonal flow into the continent. A similar warming of the Sahara is seen in future projections using both phase 3 and 5 of the Coupled Model Intercomparison Project (CMIP3 and CMIP5). Though previous studies of future projections indicate a west-east drying-wetting contrast over the Sahel, PlioMIP2 simulations indicate a uniform rainfall increase in that region in warm climates characterized by increasing greenhouse gas forcing. We note that this effect will further depend on the long-term response of the vegetation to the CO2 forcing.
- Published
- 2021
39. New Ideas Versus Bureaucratic Power in School Finance
- Author
-
Chandler, Mark William Shaw
- Published
- 2002
40. MUNICIPAL TAX ABATEMENT IN A CENTRALIZED TRANSITION STATE
- Author
-
Chandler, Mark S.
- Published
- 2002
41. Chapter 1 - Introduction to anesthesia
- Author
-
Laterza, Ryan D., Keech, Brian M., Chandler, Mark, and Roberts, Matthew J.
- Published
- 2021
- Full Text
- View/download PDF
42. Comparison of mid-Pliocene climate predictions produced by the HadAM3 and GCMAM3 General Circulation Models
- Author
-
Haywood, Alan M., Chandler, Mark A., Valdes, Paul J., Salzmann, Ulrich, Lunt, Daniel J., and Dowsett, Harry J.
- Published
- 2009
- Full Text
- View/download PDF
43. The Gene Encoding cAMP Receptor Protein is Required for Competence Development in Haemophilus influenzae Rd
- Author
-
Chandler, Mark S.
- Published
- 1992
44. Sexual Dichromatism in North American Freshwater Fish: Do Parasites Play a Role?
- Author
-
Chandler, Mark and Cabana, Gilbert
- Published
- 1991
- Full Text
- View/download PDF
45. Sex Differences in Union Membership
- Author
-
Antos, Joseph R., Chandler, Mark, and Mellow, Wesley
- Published
- 1980
- Full Text
- View/download PDF
46. The benefits of contributing to the citizen science platform iNaturalist as an identifier.
- Author
-
Callaghan, Corey T., Mesaglio, Thomas, Ascher, John S., Brooks, Thomas M., Cabras, Analyn A., Chandler, Mark, Cornwell, William K., Cristóbal Ríos-Málaver, Indiana, Dankowicz, Even, Urfi Dhiya'ulhaq, Naufal, Fuller, Richard A., Galindo-Leal, Carlos, Grattarola, Florencia, Hewitt, Susan, Higgins, Lila, Hitchcock, Colleen, James Hung, Keng-Lou, Iwane, Tony, Kahumbu, Paula, and Kendrick, Roger
- Subjects
CITIZEN science - Abstract
As the number of observations submitted to the citizen science platform iNaturalist continues to grow, it is increasingly important that these observations can be identified to the finest taxonomic level, maximizing their value for biodiversity research. Here, we explore the benefits of acting as an identifier on iNaturalist. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
47. Pediatric Battery-Related Emergency Department Visits in the United States: 2010-2019.
- Author
-
Chandler, Mark D., Ilyas, Khudeja, Jatana, Kris R., Smith, Gary A., McKenzie, Lara B., and MacKay, J. Morag
- Subjects
- *
HOSPITAL emergency services , *CONFIDENCE intervals , *COMPARATIVE studies , *DESCRIPTIVE statistics , *ELECTRIC power supplies to apparatus , *FOREIGN bodies , *MEDICAL coding , *CHILDREN - Abstract
OBJECTIVES: To describe the epidemiology of battery-related emergency department (ED) visits among children aged <18 years in the United States from 2010 to 2019 and compare with previous study findings. METHODS: Data on ED visits were obtained from the National Electronic Injury Surveillance System. Using narrative descriptions and diagnosis codes, battery-related cases were coded into four exposure routes: (1) ingestion, (2) mouth exposure, (3) ear insertion, and (4) nasal insertion. RESULTS: An estimated 70 322 (95% confidence interval: 51 275-89 369) battery-related ED visits among children aged <18 years occurred during the study period, or 9.5 per 100 000 children annually. Button batteries were implicated in 84.7% of visits where battery type was described. A statistically significant increase in the ED visit rate occurred from 2010 to 2017 (P = .03), followed by a nonstatistically significant decrease from 2017 to 2019. The ED visit rate was highest among children aged ≤5 years compared with those 6 to 17 years (24.5 and 2.2 per 100 000 children, respectively). The mean patient age was 3.2 years (95% confidence interval: 2.9-3.4). Ingestions accounted for 90.0% of ED visits, followed by nasal insertions (5.7%), ear insertions (2.5%), and mouth exposures (1.8%). CONCLUSIONS: Pediatric battery-related ED visit rates continued to significantly increase from 2010 to 2017, with children aged ≤5 years having the highest rates. Prevention efforts have not significantly reduced injury rates; therefore, regulatory efforts are needed. Ultimately, hazard reduction or elimination through safer button battery design is critical and should be adopted by the battery industry. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
48. Mapping trophic continua of benthic foodwebs: body size-δ 15 N relationships
- Author
-
France, Robert, Chandler, Mark, and Peters, Robert
- Published
- 1998
49. Mid-Pliocene Atlantic Meridional Overturning Circulation simulated in PlioMIP2
- Author
-
Zhang, Zhongshi, Li, Xiangyu, Guo, Chuncheng, Otterå, Odd Helge, Nisancioglu, Kerim, Tan, Ning, Contoux, Camille, Ramstein, Gilles, Feng, Ran, Otto-Bliesner, Bette, Brady, Esther, Chandan, Deepak, Peltier, W. Richard, Baatsen, Michiel, von der Heydt, Anna, Weiffenbach, Julia, Stepanek, Christian, Lohmann, Gerrit, Zhang, Qiong, Li, Qiang, Chandler, Mark, Sohl, Linda, Haywood, Alan, Hunter, Stephen, Tindall, Julia, Williams, Charles, Lunt, Daniel, Chan, Wing-Le, Abe-Ouchi, Ayako, Marine and Atmospheric Research, Sub Dynamics Meteorology, Sub Physical Oceanography, Laboratoire des Sciences du Climat et de l'Environnement [Gif-sur-Yvette] (LSCE), 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), Modélisation du climat (CLIM), 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), 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)-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), Marine and Atmospheric Research, Sub Dynamics Meteorology, and Sub Physical Oceanography
- Subjects
010506 paleontology ,010504 meteorology & atmospheric sciences ,lcsh:Environmental protection ,Interglacial ,Stratigraphy ,Surface warming ,Climate model ,01 natural sciences ,lcsh:Environmental pollution ,lcsh:TD169-171.8 ,lcsh:Environmental sciences ,0105 earth and related environmental sciences ,lcsh:GE1-350 ,Climatology ,Global and Planetary Change ,Forcing (mathematics) ,Paleontology ,Geology ,13. Climate action ,[SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology ,lcsh:TD172-193.5 ,Large model - Abstract
pIn the Pliocene Model Intercomparison Project Phase 2 (PlioMIP2), coupled climate models have been used to simulate an interglacial climate during the mid-Piacenzian warm period (mPWP; 3.264 to 3.025 span classCombining double low line"inline-formula"Ma/span). Here, we compare the Atlantic Meridional Overturning Circulation (AMOC), poleward ocean heat transport and sea surface warming in the Atlantic simulated with these models. In PlioMIP2, all models simulate an intensified mid-Pliocene AMOC. However, there is no consistent response in the simulated Atlantic ocean heat transport nor in the depth of the Atlantic overturning cell. The models show a large spread in the simulated AMOC maximum, the Atlantic ocean heat transport and the surface warming in the North Atlantic. Although a few models simulate a surface warming of span classCombining double low line"inline-formula"g1/4/span 8-12 span classCombining double low line"inline-formula"g C/span in the North Atlantic, similar to the reconstruction from Pliocene Research, Interpretation and Synoptic Mapping (PRISM) version 4,span idCombining double low line"page530"/ most models appear to underestimate this warming. The large model spread and model-data discrepancies in the PlioMIP2 ensemble do not support the hypothesis that an intensification of the AMOC, together with an increase in northward ocean heat transport, is the dominant mechanism for the mid-Pliocene warm climate over the North Atlantic./p.
- Published
- 2021
50. Trade backs bookshops as 'essential retail' but shop-floor staffers voice concern: The new lockdown laws forcing bookshops in England to close has led some to call for them to be allowed to open as essential retail-but those on the frontline have other ideas
- Author
-
Chandler, Mark
- Subjects
Business closings -- Economic aspects -- Surveys ,Epidemics -- Economic aspects -- United Kingdom ,Booksellers (Persons) -- Surveys ,COVID-19 -- Economic aspects ,Infection control -- Economic aspects ,Bookstores -- Forecasts and trends -- Surveys ,Business, international ,Publishing industry ,Retail industry - Abstract
The trade is split down the middle on whether bookshops should be classed as essential retailers, and remains wary over a second lockdown's effects on sales and profitability this year, [...]
- Published
- 2020
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.