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Climate action plans are essential for climate mitigation and adaptation as well as to achieve climate and development goals like the Paris Agreement and the Sustainable Development Goals (SDGs). However, the development and implementation of climate action plans at multiple levels involve decision-making processes. In this article, we examine the barriers and opportunities to decision-making in climate action plans for adaptation at three different governance levels in India: national, sub-national and local. Through a literature review and analysis of case studies, we find that lack of usable climate information, institutional weaknesses and capacity of actors are critical barriers to decision-making at all three levels in India. We recommend that providing usable and accessible climate information, creating evidence and knowledge on adaptation, strengthening the science-policy interface and institutional mechanisms, as well as building the capacities of actors can contribute to better decision-making and achieving targeted climate action plans and SDGs. [ABSTRACT FROM AUTHOR]

Combating climate change may be the greatest public health opportunity of the 21st century. While physicians play an important role in addressing climate change, given their affluence in society, they may be an important source of greenhouse gas emissions themselves. We sought to examine the size and nature of the ecological footprint of physicians and medical students. We conducted an online survey from December 2021-May 2022 examining resource consumption, changes in consumption patterns over time, and beliefs about climate change. Participants were medical students, residents, and staff physicians in Canada, India, or USA. Only 20 out of 162 valid respondents had a low ecological footprint (12%), defined as meat intake ≤2 times per week, living in an apartment or condominium, and using public transport, bicycle, motorcycle or walking to work. 14 of these 20 participants were from India. 91% of participants were open to reducing their own ecological footprint, though only 40% had made changes in that regard. 49% participants who discussed climate change at work and at home had decreased their ecological footprint, compared to 29% of participants who rarely engaged in such conversations (OR 2.39, 95% CI 1.24–4.63, P = 0.01). We conclude that physicians have a large ecological footprint, especially those from Canada and USA. A majority of physicians are interested in reducing their ecological footprint, and those who engage in conversations around climate change are more likely to have done so. Talking frequently about climate change, at work and at home, will likely increase climate change action amongst physicians. [ABSTRACT FROM AUTHOR]

India is frequently portrayed as the fourth largest greenhouse gas (GHG) emitter globally, based on the current annual emissions of sovereign nation-states. Through a comprehensive review and assessment, this article argues that other metrics of country-wise emissions provide a more holistic and unbiased view. The article argues that ranking per se by any metric is of minor value unless also placed along the actual quantities. India's cumulative emissions (excluding LULUCF, 1850-2019) amount to only 4.31% of the global total, well behind the three leading emitters, the United States (22.46%), the European Union (16.06%) and China (13.45%). Therefore, in terms of annual emissions, the story of India as the fourth largest emitter is very mistaken, as the gap between us and the third is substantial. The article argues that national emissions must be judged by equity in mitigation and in the light of climate action being undertaken. On both grounds, India, relative to its responsibility and what equity demands, is doing far more than her fair share. [ABSTRACT FROM AUTHOR]

Adverse consequences of climate change often affect people and places far away from those that have the greatest capacity for mitigation. Several correlational and some experimental studies suggest that the willingness to take mitigation actions may diminish with increasing distance. However, the empirical findings are ambiguous. In order to investigate if and how socio-spatial distance to climate change effects plays a role for the willingness to engage in mitigation actions, we conducted an online experiment with a German population sample (n = 383). We find that the willingness to sign a petition for climate protection was significantly reduced when a person in India with a name of Indian origin was affected by flooding, as compared to a person in Germany with a name of German origin. Distance did not affect donating money to climate protection or approving of mitigation policies. Our results provide evidence for the existence of a negative effect of distance to climate change consequences on the willingness to engage in low-cost mitigation actions. Investigating explanations for such an effect, we find that it can be attributed to the spatial rather than the social dimension of distance. Moreover, we find some cautious evidence that people with strong racist attitudes react differently to the distance manipulations, suggesting a form of environmental racism that could also reduce mitigation action in the case of climate change. [ABSTRACT FROM AUTHOR]

Since the start of multilateral climate negotiations, India and the US have been on opposite sides of the aisle on the issue of responsibility for climate action. Following years of intense scrutiny, India found points of convergence with the US and worked closely with the Obama administration to help secure a global deal at the 2015 Paris Climate Conference. The Trump era, however, marked a period of stark divergence between India and the US on the issue of climate change. The US' climate inaction at the multilateral level under the Trump administration was met with India's proactive global leadership in the fight against climate change. At the same time, the bilateral relationship saw greater convergence on the issue of energy trade, particularly conventional sources of energy such as coal, oil and gas. This essay analyzes India-US climate relations during the Trump years and argues that the personal views of the political leadership and domestic interest groups affected the nature of this relationship, which is best described as divergence on climate change but convergence on energy security. [ABSTRACT FROM AUTHOR]

Tropical inland capture fisheries are susceptible to a series of vulnerabilities such as habitat destruction, biodiversity loss, pollution, overfishing, invasive species and anthropogenic climate change. A comprehensive review of the impact of climatic uncertainties on Indian inland fisheries has not been adequately attempted yet. Recent approaches emphasizing ecosystem-based management in a regional context, specific to inland fisheries for combating climatic changes, have not been reported to date. The paper presents a critical bibliometric review of the climatic vulnerabilities faced by Indian inland fishery resources and various adaptive and mitigation strategies put forward by the country for the sustainability of the resources. In this communication, a systematic review of the impact of climate change and other stressors on various inland ecosystems of the subcontinent and the ecosystem-based management strategies adopted in India is presented and discussed. [ABSTRACT FROM AUTHOR]

The emerging economies of Brazil, Russia, India, China and South Africa (BRICS) have significant influence on the global economic and environmental trajectories. They have carbon intensive economic systems, which contribute significantly to total global greenhouse gas (GHG) emissions, leading to climate change. However, BRICS have joined the race to net-zero emissions by 2050 in the quest for a climate neutral and sustainable global economy. The journey, however, is not without challenges and opportunities. The proliferation of the coronavirus disease 2019 (COVID-19) had mixed reactions from scientists regarding its implications on net-zero trajectories. While statistical data show a correlation between COVID-19 and a decrease in total emissions, it is envisaged that COVID-19 compromised the efforts to develop carbon neutral economies. Hence, there is still need for more scientific examination of COVID-19's impact on net-zero ambitions, especially in the emerging economies. This study focuses on India and South Africa's trajectories. Statistical analysis of secondary data from authentic interactive web-based dashboards for COVID-19 data repositories, namely Our World in Data and Climate Action Tracker was performed in conjunction with the document analysis approach following the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) methodology. Some of the COVID-19 challenges as indicated by the results of the study include curtailing the technology transfer staircase in the energy sector, retaliatory emissions for recovery and resource diversion. The opportunities presented by COVID-19 in the quest for carbon neutrality include behavioural changes in investment, production and consumption patterns with a focus on low carbon options. Governments and stakeholders need to focus on addressing the barriers whilst riding on the opportunities presented by the pandemic to achieve net-zero emissions by 2050. [ABSTRACT FROM AUTHOR]

As calls for climate action gain momentum, governments and international organisations are committing to ambitious climate targets and scaling up their climate action. In this article, we argue that to address climate change, 'just' climate action is required which moves away from portraying local communities as 'victims' and/or 'beneficiaries' and focuses on investing in their social and material capabilities so that they determine their futures and pathways of change. Climate action will have little meaning or will produce counterproductive results unless it is mobilised to question deep-seated inequalities and unjust framings that feed into epistemic closures and foreclose possibilities of plural pathways towards radical social change. Drawing on our research with front-line communities in India, we emphasise the importance of processual aspects of addressing climate (in)justice. We underline why climate action must be steered from 'below' for transformative change, and why this requires attention to more 'vernacular' forms of action. [ABSTRACT FROM AUTHOR]

The intensity and extent of climate change impacts differ significantly with the geographical and ecological structure of the landscape. This is especially evident in mountain ecosystems where topographic, climatic and biological gradients make them extremely vulnerable to global environmental changes. Designing strategies to mitigate and adapt to global climate change on such local landscapes requires a context-specific vulnerabilities that take into account their particular characteristics. Presently, there are two main challenges in assessing climate change vulnerability in mountain ecosystems: 1) The models that are used for vulnerability assessments at global scales are being used at local scales with broad variables from few sectors that do not capture the range of characteristics of mountain ecosystems 2) indigenous knowledge about climate change are not considered in these models, which makes the implementation of mitigation/adaptation measures less successful. In this study, we highlight these issues drawing from our data collected in India's Lesser Himalayan region (Darjeeling). We used a mixed research approach that combines a vulnerability assessment model with a participatory knowledge approach. We based climate change vulnerability around the socio-ecological system of the mountain landscape. The results from the interactive process showed that Darjeeling region is experiencing higher climate change vulnerability than the results produced by the model at the subregional level. We highlight critical variables that influence the socio-ecological system and need to be taken into account when assessing vulnerability and future adaptation scenarios. The study offers a decision support process for policymakers to plan climate mitigation/adaptation measures and future sustainability pathways. [ABSTRACT FROM AUTHOR]

The article focuses on the challenges posed by climate change, particularly the rise in global average temperature and its implications, highlighting the need for intensified adaptation and mitigation efforts globally. It also emphasizes the significance of understanding the vulnerability scenario in the Indian Himalayan region and the initiatives taken under the National Mission for Sustaining the Himalayan Ecosystem to assess ecosystem health and formulate sustainable development strategies.

This study traces the development of watersheds in India based on the governing guidelines of the watershed programmes. We explore the changes and modifications in the watershed guidelines and categorize the developmental changes into six distinct yet interlinked phases. We observed that the watershed guidelines were fine-tuned with emerging challenges of land degradation, livelihood security, gender and social equity, climate change mitigation and adaptations. Recently, the focus of watersheds has shifted from production centric to income-centric by promoting enabling institutional settings. The experiences and learnings from India’s watershed programmes provide insights for other developing countries implementing such programmes. [ABSTRACT FROM AUTHOR]

Context: Climate change is the biggest global health threat and also the greatest health opportunity of the 21st century. Five warmest years among the last 140 years occurred between 2015 and 2019. Limited information is available regarding the knowledge and practices of medical students towards climate change, especially in India. Settings and Design: A cross-sectional survey was conducted in two medical colleges of Karimnagar city from January 2021 to July 2021 involving MBBS and Post-graduate students as study participants. Methods and Material: 903 undergraduate and post-graduate medical students who consented for the study were included. A pre-structured questionnaire was used. Statistical Analysis Used: Data is presented in frequencies and proportions with 95% confidence interval and Chi-square test is used as test of significance. Results: Poor knowledge regarding Sustainable Developmental Goal for climate action, Organisations dealing climate change and Government actions towards climate change were observed among study participants. Cardiovascular and respiratory diseases (84%) were answered as the major health impacts of climate change. Majority (97.4%) of the participants agreed that 'human actions are also the cause for global warming'. Environment-friendly practices were observed significantly high among participants with adequate knowledge. Major (72%) source of learning about climate change was via internet. Conclusions: Our study found that major proportion of participants doesn't have environment-friendly practices. However, the participants with adequate knowledge about climate change were observed to have more eco-friendly practices compared to participants with inadequate knowledge. [ABSTRACT FROM AUTHOR]

High-resolution regional climate model (RCM) simulations are found to be very useful in deriving realistic climate change projection information. This study uses high-resolution dynamical downscaling framework (CCSM4-WRF) for India. To delineate the advantage of high resolution, we compared the results of 9-km resolution CCSM4-WRF simulations against the 50-km resolution RCM simulations under Coordinated Regional Climate Downscaling Experiment-South Asia (CORDEX-SA) program. Quantitative estimations show that majority of CORDEX-SA models exhibit large dry bias (< − 4 mm/day) and low pattern correlation coefficient (PCC) over the Western Ghats (WG). Mean climatology of Indian summer monsoon (ISM) rainfall simulated by high-resolution CCSM4-WRF outperforms the CORDEX-SA RCMs with low negative biases (~ 1 mm/day) and high PCC (≥ 0.755). This skill of CCSM4-WRF provides better confidence in its future projection at local scale. CCSM4-WRF projects future intensification of monsoon rainfall over most parts of India and reduction over southern WG, which is consistent with recent observed trends, but none of the CORDEX-SA RCMs could simulate this rainfall reduction. For all-India rainfall, ensemble mean of CORDEX-SA models projects an increase by 1.3 ± 0.9 mm/day and CCSM4-WRF projects 0.67 mm/day. Projected changes in socioeconomic variables such as population and gross domestic product (GDP) exhibit future enhancement over most parts of India but with spatial heterogeneity. Shared socioeconomic pathways scenarios show pronounced future population growth over Indian coastal areas and large enhancement in productivity over urban areas. Therefore, climate change projection information of ISM rainfall, together with enhanced future population and GDP, is useful for taking necessary steps for adaptation and mitigation in a sustainable manner. [ABSTRACT FROM AUTHOR]

Crop residue burning is a common practice in many parts of the world that causes air pollution and greenhouse gas (GHG) emissions. Regenerative practices that return residues to the soil offer a 'no burn' pathway for addressing air pollution while building soil organic carbon (SOC). Nevertheless, GHG emissions in rice-based agricultural systems are complex and difficult to anticipate, particularly in production contexts with highly variable hydrologic conditions. Here we predict long-term net GHG fluxes for four rice residue management strategies in the context of rice-wheat cropping systems in Eastern India: burning, soil incorporation, livestock fodder, and biochar. Estimations were based on a combination of Tier 1, 2, and 3 modelling approaches, including 100-year DNDC simulations across three representative soil hydrologic categories (i.e., dry, median, and wet). Overall, residue burning resulted in total direct GHG fluxes of 2.5, 6.1, and 8.7 Mg CO 2 -e in the dry, median, and wet hydrologic categories, respectively. Relative to emissions from burning (positive values indicate an increase) for the same dry to wet hydrologic categories, soil incorporation resulted in a −0.2, 1.8, or 3.1 Mg CO 2 -e change in emissions whereas use of residues for livestock fodder increased emissions by 2.0, 2.1, or 2.3 Mg CO 2 -e. Biochar reduced emissions relative to burning by 2.9 Mg CO 2 -e in all hydrologic categories. This study showed that the production environment has a controlling effect on methane and, therefore, net GHG balance. For example, wetter sites had 2.8–4.0 times greater CH 4 emissions, on average, than dry sites when rice residues were returned to the soil. To effectively mitigate burning without undermining climate change mitigation goals, our results suggest that geographically-target approaches should be used in the rice-based systems of Eastern India to incentivize the adoption of regenerative 'no burn' residue management practices. • Efforts to build SOC for climate change mitigation, while simultaneously avoiding burning, may have unintended consequences. • Tier 1, 2, and 3 modelling approaches were used to compare no-burn rice residue pathways. • Field hydrology had a dominant effect on methane emissions. • Soil incorporation of residues increased emissions relative to open burning, except in comparatively dry fields. • Biochar is estimated to have the lowest GHG emissions of the evaluated 'no burn' alternatives. [ABSTRACT FROM AUTHOR]

Transitioning to a net-zero world is one of the greatest challenges humanity may face across the world. Nonetheless, land-based carbon removal actions are vital to meet net-zero targets but involve significant trade-offs that may risk food security. The potential increase in demand for land in the near future for land-based climate mitigation methods across India could certainly threaten the right to land and food, especially for people and communities whose livelihoods depend on land. In the context of global efforts to address and combat the climate crisis and to improve food security, agroforestry is a sustainable land use with immense potential to achieve significant impact and synergy across priorities. [ABSTRACT FROM AUTHOR]

This study estimated the total ecosystem carbon stock (TECS) and sediment carbon sequestration rate through burial for fragmented mangrove habitats of Kochi, south-west coast of India. The mean TECS of Kochi mangroves was estimated at 335.33 ± 184.47 t C ha−1, with above ground biomass of 171.68 ± 104.42 t C ha−1, belowground biomass of 83.30 ± 41.98 t C ha−1, litterfall carbon as dead biomass of 7.12 ± 2.81 t C ha−1 and soil carbon stock of 73.22 ± 39.40 t C ha−1. The average historical soil carbon sequestration rate of Kochi mangroves was also estimated as 2.95 t C ha−1 yr−1. The study revealed that there was significant variability in TECS and sediment carbon burial rate among riverine, estuarine and marine mangrove habitats and it appears that, the biological factors especially mangrove plant structure, species, age, litterfall production, crab density, mangrove conversion to aquaculture ponds and other urban pressure played major roles in driving the variability in carbon stocks and storage. While the sediment particle size, bulk density and the environmental settings played a secondary role. Very low TECS and soil carbon sequestration rate was found in aquaculture converted mangrove habitat. The CO 2e of ecosystem carbon stock (496311.20 t CO 2 e) and soil CO 2 burial (10.62 t CO 2 e ha−1 yr−1 respectively) of mangroves of Kochi, revealed that even with high urban pressure and anthropogenic activities which resulted in fragmented distribution, they are still potent in long term carbon sequestration unless it is not further disturbed. Therefore, conservation and restoration of mangrove habitats based on understanding of the regional controlling factors of carbon stock and carbon burial is a need for scientific climate change mitigation efforts. The study will also contribute to fill the gaps in global mangrove carbon stock assessments for avoiding uncertainties. [Display omitted] • High total ecosystem carbon stock and sequestration in the mangrove ecosystem. • Observed significant variability in carbon stock and burial. • Major controls include biological factors and geomorphological differentiation. • Aquaculture has an impact on carbon stock and sequestration. • Mangrove destruction negatively impacts coastal economies. [ABSTRACT FROM AUTHOR]

The article presents the framework for evaluating India's net zero commitments.

The Himalayan ecosystem is critical for ecological security and environmental sustainability. However, continuous deforestation is posing a serious threat to Himalayan sustainability. Changing land-use systems exert a tenacious impact on soil carbon (C) dynamics and regulate C emissions from Himalayan ecosystem. Therefore, this study was conducted to determine the changes in different C pools and associated soil properties under diverse land-use systems, viz. natural forest, natural grassland, maize field converted from the forest, plantation, and paddy field of temperate Himalaya in the surface (0–20 cm) and subsurface (20–40 cm) soils. The highest total organic carbon (24.24 g kg−1) and Walkley-black carbon contents (18.23 g kg−1), total organic carbon (45.88 Mg ha−1), and Walkley-black carbon stocks (34.50 Mg ha−1) were recorded in natural forest in surface soil (0–20 cm depth), while soil under paddy field had least total organic carbon (36.45 Mg ha−1) and Walkley-black carbon stocks (27.40 Mg ha−1) in surface soil (0–20 cm depth). The conversion of natural forest into paddy land results in 47.36% C losses. Among the cultivated land-use system, minimum C losses (29.0%) from different pools over natural forest system were reported under maize-filed converted from forest system. Land conversion causes more C losses (21.0%) in surface soil (0–20 cm depth) as compared to subsurface soil. Furthermore, conversion of forest land into paddy fields increased soil pH by 5.9% and reduced total nitrogen contents and microbial population by 28.0% and 7.0%, respectively. However, the intensity of total nitrogen and microbial population reduction was the lowest under maize fields converted from the forest system. The study suggested that the conversion of natural forest to agricultural land must be discouraged in the temperate Himalayan region. However, to feed the growing population, converted forest land can be brought under conservation effective maize-based systems to reduce C loss from the intensive land use and contribute to soil quality improvements and climate change mitigation. [Display omitted] • Five Land uses were assessed for TOC and WBC dynamics. • Natural forests had the highest TOC and WBC stocks in soil profile (0–40 cm). • Conversation of forest land to crop land accelerates the soil C losses. • The lowest soil C losses was observed in conservation effective maize based system. [ABSTRACT FROM AUTHOR]

Clean energy transition via utilizing biomass resources has been projected as an important climate change mitigation strategy. A vital characteristic of biomass is its localized nature; therefore, bioenergy utilization should follow decentralized planning. Agrarian countries like India can take benefit of its large agricultural biomass waste pool to produce clean renewable energy. However, prior knowledge of spatio-temporal distribution, competing uses, and biomass characteristics are necessary for successful bioenergy planning. This paper assesses biomass resource and its power generation potential at different agro-climatic zone levels in the state of Rajasthan, India considering crop residue biomass (25 different crop residues from 14 crops) and livestock manure (from cattle, buffalo, and poultry). Uncertainties associated with the availability of biomass and the power generation potential are assessed for each agro-climatic zone under different scenarios. Greenhouse gases (GHGs) emissions from biomass-based power generations are also estimated and compared with biomass-equivalent coal power plants. It is observed that the annual biomass power potential of Rajasthan is 3056 MW (2496 MW from crop residues and 560 MW from livestock manure). Scenario analysis suggests that the potential varies from 2445 to 6045 MW under different biomass availability and power plant operating conditions. Annual GHGs emissions due to biomass power generation is 5053 kt CO 2 eq. Replacing coal-based power with biomass power would result in annual GHGs savings of 11412 kt CO 2 eq. The paper also discusses various carriers and barriers viz. logistics, institutional, financial and technical in setting up decentralized bioenergy plants. Outcomes of the present study are expected to assist renewable energy planners in India. • Biomass resources and their power potential are assessed for Rajasthan, India. •Biomass power potential for different selected scenario ranges from 2445-6045 MW. •GHG emissions from biomass power is assessed and compared with fossil fuels. •Spatio-temporal variability, low density and logistics are limitations of biomass. •Favourable policies, technologies and market can help to promote bioenergy sector. [ABSTRACT FROM AUTHOR]