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Mamun GMS, Moretti K, Afroze F, Brintz BJ, Rahman ASMMH, Gainey M, Sarmin M, Shaima SN, Chisti MJ, Levine AC, Garbern SC. Modelling climate impacts on paediatric sepsis incidence and severity in Bangladesh. J Glob Health 2024; 14:04107. [PMID: 39024619 PMCID: PMC11257703 DOI: 10.7189/jogh.14.04107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/20/2024] Open
Abstract
Background Sepsis is a leading cause of paediatric mortality worldwide, disproportionately affecting children in low- and middle-income countries. The impacts of climate change on the burden and outcomes of sepsis in low- and middle-income countries, particularly in paediatric populations, remain poorly understood. We aimed to assess the associations between climate variables (temperature and precipitation) and paediatric sepsis incidence and mortality in Bangladesh, one of the countries most affected by climate change. Methods We conducted retrospective analyses of patient-level data from the International Centre for Diarrhoeal Disease Research, Bangladesh, and environmental data from the National Oceanic and Atmospheric Administration. Using random forests, we assessed associations between sepsis incidence and sepsis mortality with temperature and precipitation between 2009-22. Results A nonlinear relationship between temperature and sepsis incidence and mortality was identified. The lowest incidence occurred at an optimum temperature of 26.6°C with a gradual increase below and a sharp rise above this temperature. Higher precipitation levels showed a general trend of increased sepsis incidence. A similar distribution for sepsis mortality was identified with an optimum temperature of 28°C. Conclusions Findings suggest that environmental temperature and precipitation play a role in paediatric sepsis incidence and sepsis mortality in Bangladesh. As children are particularly vulnerable to climate impacts, it is important to consider climate change in health care planning and resource allocation, especially in resource-limited settings, to allow for surge capacity planning during warmer and wetter seasons. Further prospective research from more globally representative data sets will provide more robust evidence on the nature of the relationships between climate variables and paediatric sepsis worldwide.
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Affiliation(s)
- Gazi MS Mamun
- Infectious Diseases Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Katelyn Moretti
- Department of Emergency Medicine, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Farzana Afroze
- Nutrition Research Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Ben J Brintz
- Division of Epidemiology, Internal Medicine, University of Utah, Salt Lake City, Utah, USA
| | - Abu SMMH Rahman
- Infectious Diseases Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | | | - Monira Sarmin
- Nutrition Research Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Shamsun N Shaima
- Nutrition Research Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Mohammod J Chisti
- Nutrition Research Division, International Centre for Diarrhoeal Disease Research, Bangladesh, Dhaka, Bangladesh
| | - Adam C Levine
- Department of Emergency Medicine, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Stephanie C Garbern
- Department of Emergency Medicine, Warren Alpert Medical School of Brown University, Providence, Rhode Island, USA
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de Bont J, Krishna B, Stafoggia M, Banerjee T, Dholakia H, Garg A, Ingole V, Jaganathan S, Kloog I, Lane K, Mall RK, Mandal S, Nori-Sarma A, Prabhakaran D, Rajiva A, Tiwari AS, Wei Y, Wellenius GA, Schwartz J, Prabhakaran P, Ljungman P. Ambient air pollution and daily mortality in ten cities of India: a causal modelling study. Lancet Planet Health 2024; 8:e433-e440. [PMID: 38969471 DOI: 10.1016/s2542-5196(24)00114-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 03/18/2024] [Accepted: 05/03/2024] [Indexed: 07/07/2024]
Abstract
BACKGROUND The evidence for acute effects of air pollution on mortality in India is scarce, despite the extreme concentrations of air pollution observed. This is the first multi-city study in India that examines the association between short-term exposure to PM2·5 and daily mortality using causal methods that highlight the importance of locally generated air pollution. METHODS We applied a time-series analysis to ten cities in India between 2008 and 2019. We assessed city-wide daily PM2·5 concentrations using a novel hybrid nationwide spatiotemporal model and estimated city-specific effects of PM2·5 using a generalised additive Poisson regression model. City-specific results were then meta-analysed. We applied an instrumental variable causal approach (including planetary boundary layer height, wind speed, and atmospheric pressure) to evaluate the causal effect of locally generated air pollution on mortality. We obtained an integrated exposure-response curve through a multivariate meta-regression of the city-specific exposure-response curve and calculated the fraction of deaths attributable to air pollution concentrations exceeding the current WHO 24 h ambient PM2·5 guideline of 15 μg/m3. To explore the shape of the exposure-response curve at lower exposures, we further limited the analyses to days with concentrations lower than the current Indian standard (60 μg/m3). FINDINGS We observed that a 10 μg/m3 increase in 2-day moving average of PM2·5 was associated with 1·4% (95% CI 0·7-2·2) higher daily mortality. In our causal instrumental variable analyses representing the effect of locally generated air pollution, we observed a stronger association with daily mortality (3·6% [2·1-5·0]) than our overall estimate. Our integrated exposure-response curve suggested steeper slopes at lower levels of exposure and an attenuation of the slope at high exposure levels. We observed two times higher risk of death per 10 μg/m3 increase when restricting our analyses to observations below the Indian air quality standard (2·7% [1·7-3·6]). Using the integrated exposure-response curve, we observed that 7·2% (4·2%-10·1%) of all daily deaths were attributed to PM2·5 concentrations higher than the WHO guidelines. INTERPRETATION Short-term PM2·5 exposure was associated with a high risk of death in India, even at concentrations well below the current Indian PM2·5 standard. These associations were stronger for locally generated air pollutants quantified through causal modelling methods than conventional time-series analysis, further supporting a plausible causal link. FUNDING Swedish Research Council for Sustainable Development.
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Affiliation(s)
- Jeroen de Bont
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
| | | | - Massimo Stafoggia
- Department of Epidemiology, Lazio Region Health Service /ASL Roma 1, Rome, Italy
| | - Tirthankar Banerjee
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
| | - Hem Dholakia
- Smart Prosperity Institute, University of Ottawa, ON, Canada
| | - Amit Garg
- Public Systems Group, National Investment & Infrastructure Fund Chair in Environment, Social & Corporate Governance, Indian Institute of Management, Ahmedabad, India
| | - Vijendra Ingole
- Environmental, Climate, and Urban Health Division, Vital Strategies, New York, NY, USA; Office for National Statistics, Newport, Wales, UK
| | - Suganthi Jaganathan
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Chronic Disease Control, New Delhi, India; Ashoka University, Sonipat, India
| | - Itai Kloog
- Ben-Gurion University of the Negev, Beer-Sheva, Israel; Department of Environmental Medicine and Climate Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kevin Lane
- Department of Environmental Health, Boston University School of Public Health, Boston, MA, USA
| | - Rajesh Kumar Mall
- DST-Mahamana Center of Excellence in Climate Change Research, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
| | - Siddhartha Mandal
- Centre for Chronic Disease Control, New Delhi, India; Ashoka University, Sonipat, India
| | - Amruta Nori-Sarma
- Department of Environmental Health, Boston University School of Public Health, Boston, MA, USA
| | | | - Ajit Rajiva
- Centre for Chronic Disease Control, New Delhi, India; Ashoka University, Sonipat, India; Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | | | - Yaguang Wei
- Department of Environmental Medicine and Climate Science, Icahn School of Medicine at Mount Sinai, New York, NY, USA; Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Gregory A Wellenius
- Department of Environmental Health, Boston University School of Public Health, Boston, MA, USA
| | - Joel Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Poornima Prabhakaran
- Centre for Chronic Disease Control, New Delhi, India; Public Health Foundation of India, New Delhi, India; Ashoka University, Sonipat, India
| | - Petter Ljungman
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Danderyd Hospital, Stockholm, Sweden
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3
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de Bont J, Nori-Sarma A, Stafoggia M, Banerjee T, Ingole V, Jaganathan S, Mandal S, Rajiva A, Krishna B, Kloog I, Lane K, Mall RK, Tiwari A, Wei Y, Wellenius GA, Prabhakaran D, Schwartz J, Prabhakaran P, Ljungman P. Impact of heatwaves on all-cause mortality in India: A comprehensive multi-city study. ENVIRONMENT INTERNATIONAL 2024; 184:108461. [PMID: 38340402 DOI: 10.1016/j.envint.2024.108461] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 01/12/2024] [Accepted: 01/24/2024] [Indexed: 02/12/2024]
Abstract
BACKGROUND Heatwaves are expected to increase with climate change, posing a significant threat to population health. In India, with the world's largest population, heatwaves occur annually but have not been comprehensively studied. Accordingly, we evaluated the association between heatwaves and all-cause mortality and quantifying the attributable mortality fraction in India. METHODS We obtained all-cause mortality counts for ten cities in India (2008-2019) and estimated daily mean temperatures from satellite data. Our main extreme heatwave was defined as two-consecutive days with an intensity above the 97th annual percentile. We estimated city-specific heatwave associations through generalised additive Poisson regression models, and meta-analysed the associations. We reported effects as the percentage change in daily mortality, with 95% confidence intervals (CI), comparing heatwave vs non-heatwave days. We further evaluated heatwaves using different percentiles (95th, 97th, 99th) for one, two, three and five-consecutive days. We also evaluated the influence of heatwave duration, intensity and timing in the summer season on heatwave mortality, and estimated the number of heatwave-related deaths. FINDINGS Among ∼ 3.6 million deaths, we observed that temperatures above 97th percentile for 2-consecutive days was associated with a 14.7 % (95 %CI, 10.3; 19.3) increase in daily mortality. Alternative heatwave definitions with higher percentiles and longer duration resulted in stronger relative risks. Furthermore, we observed stronger associations between heatwaves and mortality with higher heatwave intensity. We estimated that around 1116 deaths annually (95 %CI, 861; 1361) were attributed to heatwaves. Shorter and less intense definitions of heatwaves resulted in a higher estimated burden of heatwave-related deaths. CONCLUSIONS We found strong evidence of heatwave impacts on daily mortality. Longer and more intense heatwaves were linked to an increased mortality risk, however, resulted in a lower burden of heatwave-related deaths. Both definitions and the burden associated with each heatwave definition should be incorporated into planning and decision-making processes for policymakers.
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Affiliation(s)
- Jeroen de Bont
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden.
| | - Amruta Nori-Sarma
- Center for Climate and Health, Boston University School of Public Health, Boston, MA, United States
| | - Massimo Stafoggia
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Epidemiology, Lazio Region Health Service /ASL Roma 1, Rome, Italy
| | - Tirthankar Banerjee
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
| | - Vijendra Ingole
- Office for National Statistics, Wales, Newport, United Kingdom
| | - Suganthi Jaganathan
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Centre for Chronic Disease Control, New Delhi, India; Ashoka University, Sonipat, India
| | - Siddhartha Mandal
- Centre for Chronic Disease Control, New Delhi, India; Ashoka University, Sonipat, India
| | - Ajit Rajiva
- Centre for Chronic Disease Control, New Delhi, India; Ashoka University, Sonipat, India
| | | | - Itai Kloog
- Ben-Gurion University of the Negev, Beer-Sheva, Israel; Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kevin Lane
- Center for Climate and Health, Boston University School of Public Health, Boston, MA, United States
| | - Rajesh K Mall
- DST-Mahamana Center of Excellence in Climate Change Research, Institute of Environment and Sustainable Futures Collaborative, New Delhi, India
| | | | - Yaguang Wei
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Gregory A Wellenius
- Center for Climate and Health, Boston University School of Public Health, Boston, MA, United States
| | - Dorairaj Prabhakaran
- Centre for Chronic Disease Control, New Delhi, India; Ashoka University, Sonipat, India
| | - Joel Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Poornima Prabhakaran
- Centre for Chronic Disease Control, New Delhi, India; Ashoka University, Sonipat, India
| | - Petter Ljungman
- Institute of Environmental Medicine, Karolinska Institutet, Stockholm, Sweden; Department of Cardiology, Danderyd Hospital, Stockholm, Sweden
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Choudhary RK, Joshi P, Ghosh S, Ganguly D, Balakrishnan K, Singh N, Mall RK, Kumar A, Dey S. Excess Mortality Risk Due to Heat Stress in Different Climatic Zones of India. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2024; 58:342-351. [PMID: 38151765 DOI: 10.1021/acs.est.3c05218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2023]
Abstract
India is at a high risk of heat stress-induced health impacts and economic losses owing to its tropical climate, high population density, and inadequate adaptive planning. The health impacts of heat stress across climate zones in India have not been adequately explored. Here, we examine and report the vulnerability to heat stress in India using 42 years (1979-2020) of meteorological data from ERA-5 and developed climate-zone-specific percentile-based human comfort class thresholds. We found that the heat stress is usually 1-4 °C higher on heatwave (HW) days than on nonheatwave (NHW) days. However, the stress on NHW days remains considerable and cannot be neglected. We then showed the association of a newly formulated India heat index (IHI) with daily all-cause mortality in three cities - Delhi (semiarid), Varanasi (humid subtropical), and Chennai (tropical wet and dry), using a semiparametric quasi-Poisson regression model, adjusted for nonlinear confounding effects of time and PM2.5. The all-cause mortality risk was enhanced by 8.1% (95% confidence interval, CI: 6.0-10.3), 5.9% (4.6-7.2), and 8.0% (1.7-14.2) during "sweltering" days in Varanasi, Delhi, and Chennai, respectively, relative to "comfortable" days. Across four age groups, the impact was more severe in Varanasi (ranging from a 3.2 to 7.5% increase in mortality risk for a unit rise in IHI) than in Delhi (2.6-4.2% higher risk) and Chennai (0.9-5.7% higher risk). We observed a 3-6 days lag effect of heat stress on mortality in these cities. Our results reveal heterogeneity in heat stress impact across diverse climate zones in India and call for developing an early warning system keeping in mind these regional variations.
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Affiliation(s)
- Rohit Kumar Choudhary
- Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, Delhi 110016, India
- Swami Shraddhanand College, University of Delhi, Delhi 110036, India
| | - Pallavi Joshi
- Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, Delhi 110016, India
| | - Santu Ghosh
- St. John's Medical College, Bengaluru 560034, India
| | - Dilip Ganguly
- Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, Delhi 110016, India
| | - Kalpana Balakrishnan
- SRU-ICMR Centre for Advanced Research on Air Quality, Climate and Health Department of Environmental Health Engineering, Faculty of Public Health, Sri Ramachandra Institute for Higher Education and Research, Chennai 600116, India
| | - Nidhi Singh
- IUF - Leibniz Research Institute for Environmental Medicine, 103045 Düsseldorf, Germany
| | - Rajesh Kumar Mall
- DST-Mahamana Centre of Excellence in Climate Change Research, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi 221005, India
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi 221005, India
| | - Alok Kumar
- Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, Delhi 110016, India
| | - Sagnik Dey
- Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, Delhi 110016, India
- Centre of Excellence for Research on Clean Air, Indian Institute of Technology Delhi, Delhi 110016, India
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Singh A, Banerjee T, Latif MT, Ramanathan S, Suradi H, Othman M, Murari V. Molecular distribution, sources and potential health risks of fine particulate-bound polycyclic aromatic hydrocarbons during high pollution episodes in a subtropical urban city. CHEMOSPHERE 2023; 340:139943. [PMID: 37625487 DOI: 10.1016/j.chemosphere.2023.139943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 08/01/2023] [Accepted: 08/22/2023] [Indexed: 08/27/2023]
Abstract
Abundance of fine particulate-bound 16 priority polycyclic aromatic hydrocarbons (PAHs) was investigated to ascertain its sources and potential carcinogenic health risks in Varanasi, India. The city represents a typical urban settlement of South Asia having particulate exposure manyfold higher than standard with reports of pollution induced mortalities and morbidities. Fine particulates (PM2.5) were monitored from October 2019 to May 2020, with 32% of monitoring days accounting ≥100 μgm-3 of PM2.5 concentration, frequently from November to January (99% of monitoring days). The concentration of 16 priority PAHs varied from 24.1 to 44.6 ngm-3 (mean: 33.1 ± 3.2 ngm-3) without much seasonal deviations. Both low (LMW, 56%) and high molecular weight (HMW, 44%) PAHs were abundant, with Fluoranthene (3.9 ± 0.4ngm-3) and Fluorene (3.5 ± 0.3ngm-3) emerged as most dominating PAHs. Concentration of Benzo(a)pyrene (B(a)P, 0.5 ± 0.1ngm-3) was lower than the national standard as it contributed 13% of total PAHs mass. Diagnostic ratios of PAH isomers indicate predominance of pyrogenic sources including emissions from biomass burning, and both from diesel and petrol-driven vehicles. Source apportionment using receptor model revealed similar observation of major PAHs contribution from biomass burning and fuel combustion (54% of source contribution) followed by coal combustion for residential heating and cooking purposes (44%). Potential toxicity of B[a]P equivalence ranged from 0.003 to 1.365 with cumulative toxicity of 2.13ngm-3. Among the PAH species, dibenzo[h]anthracene contributed maximum toxicity followed by B[a]P, together accounting 86% of PAH induced carcinogenicity. Incremental risk of developing cancer through lifetime exposure (ILCR) of PAHs was higher in children (3.3 × 10-4) with 56% contribution from LMW PAHs, primarily through ingestion and dermal contact. Adults in contrast, were more exposed to inhale airborne PAHs with cumulative ILCR of 2.2 × 10-4. However, ILCR to PM2.5 exposure is probably underestimated considering unaccounted metal abundance thus, require source-specific control measures.
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Affiliation(s)
- Abhishek Singh
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
| | - Tirthankar Banerjee
- Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India; DST-Mahamana Centre of Excellence in Climate Change Research, Banaras Hindu University, Varanasi, India.
| | - Mohd T Latif
- Department of Earth Sciences and Environment, Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Sharanya Ramanathan
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Hamidah Suradi
- Department of Chemistry, Faculty of Science, Universiti Malaya, Kuala Lumpur, Malaysia
| | - Murnira Othman
- Institute for Environment and Development (LESTARI), Universiti Kebangsaan Malaysia, Bangi, Malaysia
| | - Vishnu Murari
- Centre for Education, Research and Innovation in Energy Environment, IMT Nord, Douai, France
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Shukla KK, Attada R. CMIP6 models informed summer human thermal discomfort conditions in Indian regional hotspot. Sci Rep 2023; 13:12549. [PMID: 37532718 PMCID: PMC10397217 DOI: 10.1038/s41598-023-38602-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Accepted: 07/11/2023] [Indexed: 08/04/2023] Open
Abstract
The frequency and intensity of extreme thermal stress conditions during summer are expected to increase due to climate change. This study examines sixteen models from the Coupled Model Intercomparison Project Phase 6 (CMIP6) that have been bias-adjusted using the quantile delta mapping method. These models provide Universal Thermal Climate Index (UTCI) for summer seasons between 1979 and 2010, which are regridded to a similar spatial grid as ERA5-HEAT (available at 0.25° × 0.25° spatial resolution) using bilinear interpolation. The evaluation compares the summertime climatology and trends of the CMIP6 multi-model ensemble (MME) mean UTCI with ERA5 data, focusing on a regional hotspot in northwest India (NWI). The Pattern Correlation Coefficient (between CMIP6 models and ERA5) values exceeding 0.9 were employed to derive the MME mean of UTCI, which was subsequently used to analyze the climatology and trends of UTCI in the CMIP6 models.The spatial climatological mean of CMIP6 MME UTCI demonstrates significant thermal stress over the NWI region, similar to ERA5. Both ERA5 and CMIP6 MME UTCI show a rising trend in thermal stress conditions over NWI. The temporal variation analysis reveals that NWI experiences higher thermal stress during the summer compared to the rest of India. The number of thermal stress days is also increasing in NWI and major Indian cities according to ERA5 and CMIP6 MME. Future climate projections under different scenarios (SSP1-2.6, SSP2-4.5, and SSP5-8.5) indicate an increasing trend in thermal discomfort conditions throughout the twenty-first century. The projected rates of increase are approximately 0.09 °C per decade, 0.26 °C per decade, and 0.56 °C per decade, respectively. Assessing the near (2022-2059) and far (2060-2100) future, all three scenarios suggest a rise in intense heat stress days (UTCI > 38 °C) in NWI. Notably, the CMIP6 models predict that NWI could reach deadly levels of heat stress under the high-emission (SSP5-8.5) scenario. The findings underscore the urgency of addressing climate change and its potential impacts on human well-being and socio-economic sectors.
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Affiliation(s)
- Krishna Kumar Shukla
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, SAS Nagar, Manauli, Sector 81, Knowledge city, 140306, Punjab, India
| | - Raju Attada
- Department of Earth and Environmental Sciences, Indian Institute of Science Education and Research Mohali, SAS Nagar, Manauli, Sector 81, Knowledge city, 140306, Punjab, India.
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Rajput P, Singh S, Singh TB, Mall RK. The nexus between climate change and public health: a global overview with perspectives for Indian cities. ARABIAN JOURNAL OF GEOSCIENCES 2023; 16:15. [PMCID: PMC9765391 DOI: 10.1007/s12517-022-11099-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 12/08/2022] [Indexed: 06/28/2023]
Abstract
Climate change is widely recognized as a major threat to public health. The Intergovernmental Panel on Climate Change’s Sixth Assessment Report (IPCC AR6), assessing different Shared Socioeconomic Pathway scenarios (SSP1-1.9, SSP1-2.6, SSP2-4.5, SSP3-7.0 and SSP5-8.5), projects that relative to 1850–1900, the global temperature is rising and would exceed 2 °C during the twenty-first century under the high (SSP3-7.0) and very high (SSP5-8.5) greenhouse gas (GHG) emission scenarios considered. Populations within tropical and subtropical regions are more likely to experience increased vulnerability towards heat stress. In this study, a summary of some of the important aspects of climate change and human health has been presented. The effects of climate change on India’s energy demand, employment, labor market and benefits have also been highlighted. Finally, we have discussed the national policies implemented or action underway to mitigate climate change and improve public health and have also provided some recommendations to carry forward. The current study overviewing the nexus between climate change and public health has a major aim to provide a perspective towards strengthening the health system in Indian cities.
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Affiliation(s)
- Prashant Rajput
- DST-Mahamana Centre of Excellence in Climate Change Research, IESD, Banaras Hindu University, Varanasi, 221 005 India
| | - Saumya Singh
- DST-Mahamana Centre of Excellence in Climate Change Research, IESD, Banaras Hindu University, Varanasi, 221 005 India
| | - Tej Bali Singh
- Centre of Biostatistics, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221 005 India
| | - Rajesh Kumar Mall
- DST-Mahamana Centre of Excellence in Climate Change Research, IESD, Banaras Hindu University, Varanasi, 221 005 India
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8
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Wolf ST, Vecellio DJ, Kenney WL. Adverse heat-health outcomes and critical environmental limits (Pennsylvania State University Human Environmental Age Thresholds project). Am J Hum Biol 2023; 35:e23801. [PMID: 36125292 PMCID: PMC9840654 DOI: 10.1002/ajhb.23801] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Revised: 06/24/2022] [Accepted: 07/29/2022] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND The earth's climate is warming and the frequency, duration, and severity of heat waves are increasing. Meanwhile, the world's population is rapidly aging. Epidemiological data demonstrate exponentially greater increases in morbidity and mortality during heat waves in adults ≥65 years. Laboratory data substantiate the mechanistic underpinnings of age-associated differences in thermoregulatory function. However, the specific combinations of environmental conditions (i.e., ambient temperature and absolute/relative humidity) above which older adults are at increased risk of heat-related morbidity and mortality are less clear. METHODS This review was conducted to (1) examine the recent (past 3 years) literature regarding heat-related morbidity and mortality in the elderly and discuss projections of future heat-related morbidity and mortality based on climate model data, and (2) detail the background and unique methodology of our ongoing laboratory-based projects aimed toward identifying the specific environmental conditions that result in elevated risk of heat illness in older adults, and the implications of using the data toward the development of evidence-based safety interventions in a continually-warming climate (PSU HEAT; Human Environmental Age Thresholds). RESULTS The recent literature demonstrates that extreme heat continues to be increasingly detrimental to the health of the elderly and that this is apparent across the world, although the specific environmental conditions above which older adults are at increased risk of heat-related morbidity and mortality remain unclear. CONCLUSION Characterizing the environmental conditions above which risk of heat-related illnesses increase remains critical to enact policy decisions and mitigation efforts to protect vulnerable people during extreme heat events.
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Affiliation(s)
- S. Tony Wolf
- Department of Kinesiology, The Pennsylvania State University, University Park, PA, 16802
| | - Daniel J. Vecellio
- Center for Healthy Aging, The Pennsylvania State University, University Park, PA, 16802
| | - W. Larry Kenney
- Department of Kinesiology, The Pennsylvania State University, University Park, PA, 16802
- Center for Healthy Aging, The Pennsylvania State University, University Park, PA, 16802
- Graduate Program in Physiology, The Pennsylvania State University, University Park, PA, 16802
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Temperature, cardiovascular mortality, and the role of hypertension and renin-angiotensin-aldosterone axis in seasonal adversity: a narrative review. J Hum Hypertens 2022; 36:1035-1047. [PMID: 35618875 DOI: 10.1038/s41371-022-00707-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 04/25/2022] [Accepted: 05/12/2022] [Indexed: 12/14/2022]
Abstract
Environmental temperature is now well known to have a U-shaped relationship with cardiovascular (CV) and all-cause mortality. Both heat and cold above and below an optimum temperature, respectively, are associated with adverse outcomes. However, cold in general and moderate cold specifically is predominantly responsible for much of temperature-attributable adversity. Importantly, hypertension-the most important CV risk factor-has seasonal variation such that BP is significantly higher in winter. Besides worsening BP control in established hypertensives, cold-induced BP increase also contributes to long-term BP variability among normotensive and pre-hypertensive patients, also a known CV risk factor. Disappointingly, despite the now well-stablished impact of temperature on BP and on CV mortality separately, direct linkage between seasonal BP change and CV outcomes remains preliminary. Proving or disproving this link is of immense clinical and public health importance because if seasonal BP variation contributes to seasonal adversity, this should be a modifiable risk. Mechanistically, existing evidence strongly suggests a central role of the sympathetic nervous system (SNS), and secondarily, the renin-angiotensin-aldosterone axis (RAAS) in mediating cold-induced BP increase. Though numerous other inflammatory, metabolic, and vascular perturbations likely also contribute, these may also well be secondary to cold-induced SNS/RAAS activation. This review aims to summarize the current evidence linking temperature, BP and CV outcomes. We also examine underlying mechanisms especially in regard to the SNS/RAAS axis, and highlight possible mitigation measures for clinicians.
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Tiwari I, Tilstra M, Campbell SM, Nielsen CC, Hodgins S, Osornio Vargas AR, Whitfield K, Sapkota BP, Yamamoto SS. Climate change impacts on the health of South Asian children and women subpopulations - A scoping review. Heliyon 2022; 8:e10811. [PMID: 36203903 PMCID: PMC9529585 DOI: 10.1016/j.heliyon.2022.e10811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Revised: 04/05/2022] [Accepted: 09/23/2022] [Indexed: 11/17/2022] Open
Abstract
Background and objectives Climate change impacts are felt unequally worldwide; populations that experience geographical vulnerability, those living in small island states and densely populated coastal areas, and children and women are affected disproportionately. This scoping review aims to synthesize evidence from relevant studies centred on South Asia, identify research gaps specifically focused on children and women's health, and contribute to knowledge about South Asia's existing mitigation and adaptation strategies. Methods A research librarian executed the search on six databases using controlled vocabulary (e.g., MeSH, Emtree, etc.) and keywords representing the concepts “vulnerable populations” and “climate change” and “health impacts” and “South Asia.” Databases were searched from January 2010 to May 2020. Papers were screened independently by two researchers. Results Forty-two studies were included, of which 23 were based in India, 14 in Bangladesh, and five in other South Asian countries. Nineteen studies focused on meteorological factors as the primary exposure. In contrast, thirteen focused on extreme weather events, nine on air pollution, and one on salinity in coastal areas. Thirty-four studies focused on the health impacts on children related to extreme weather events, meteorological factors, and air pollution, while only eight studies looked at health impacts on women. Undernutrition, ARI (acute respiratory infection), diarrheal diseases, low birth weight, and premature mortality were the major health impacts attributed to extreme weather events, meteorological factors, and air pollution exposure in children and women in the region. Conclusion Extreme weather events, meteorological factors and air pollution have affected the health of children and women in South Asia. However, the gap in the literature across the South Asian countries concerning relationships between exposure to extreme weather events, meteorological factors, air pollution and health effects, including mental health problems in children and women, are opportunities for future work.
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Affiliation(s)
- Ishwar Tiwari
- School of Public Health, University of Alberta, Edmonton, AB, T6G 1C9, Canada
- Corresponding author.
| | - McKenzie Tilstra
- School of Public Health, University of Alberta, Edmonton, AB, T6G 1C9, Canada
| | - Sandra M. Campbell
- John W. Scott Health Science Library, University of Alberta, Edmonton AB, T6G 2R7, Canada
| | - Charlene C. Nielsen
- School of Public Health, University of Alberta, Edmonton, AB, T6G 1C9, Canada
| | - Stephen Hodgins
- School of Public Health, University of Alberta, Edmonton, AB, T6G 1C9, Canada
| | - Alvaro R. Osornio Vargas
- Department of Pediatrics, Faculty of Medicine and Dentistry, University of Alberta, Edmonton, AB, T6G 1C9, Canada
| | - Kyle Whitfield
- School of Urban and Regional Planning, Faculty of Science, University of Alberta, 116 & 85 Ave, Edmonton, AB
| | - Bhim Prasad Sapkota
- Center for International Health, Ludwig-Maximilians-Universität, Munich, Germany
- Ministry of Health and Population, Government of Nepal, Ram Shah Path, Kathmandu, Nepal
| | - Shelby S. Yamamoto
- School of Public Health, University of Alberta, Edmonton, AB, T6G 1C9, Canada
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Dastoorpoor M, Khodadadi N, Masoumi K, Khanjani N, Idani E, Borsi SH, Goudarzi G, Raji H, Sharafkhani R. Physiological equivalent temperature (PET) and non-accidental, cardiovascular and respiratory disease mortality in Ahvaz, Iran. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 2022; 44:2767-2782. [PMID: 34417925 DOI: 10.1007/s10653-021-01063-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Accepted: 08/04/2021] [Indexed: 06/13/2023]
Abstract
Climate change may be associated with human morbidity and mortality through direct and indirect effects. Ahvaz is one of the hottest cities in the world. The aim of this study was to investigate the relation between physiological Equivalent Temperature (PET) and non-accidental, cardiovascular and respiratory disease mortality in Ahvaz, Iran. Distributed Lag Non-linear Models (DLNM) combined with quasi-Poisson regression were used to investigate the effect of PET on death. The effect of time trend, air pollutants (NO2, SO2 and PM10), and weekdays were adjusted.The results showed that in cold stress [1st percentile of PET (2.7 °C) relative to 25th percentile (11.9 °C)] the risk of total respiratory mortality, respiratory mortality in men, and mortality in people under 65 year olds, significantly decreased in the cumulative lags of 0-2, 0-6 and 0-13; but the risk of respiratory mortality increased in the elderly and in the final lags. In contrast, heat stress [99th percentile of PET (44.9 °C) relative to 75th percentile (43.4 °C)] significantly increased the risk of total cardiovascular mortality (CVD), cardiovascular mortality in men, ischemic heart disease and cerebrovascular disease mortality in lags 0 and 0-2. It seems that high PET values increase the risk of cardiovascular mortality, while low PET values increase respiratory mortality only among the elderly in Ahvaz.
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Affiliation(s)
- Maryam Dastoorpoor
- Department of Biostatistics and Epidemiology, Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Narges Khodadadi
- Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Kambiz Masoumi
- Department of Emergency Medicine, Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Narges Khanjani
- Environmental Health Engineering Research Center, Kerman University of Medical Sciences, Kerman, Iran
| | - Esmaeil Idani
- Department of Internal Medicine, School of Medicine, ShahidBeheshti University of Medical Sciences, Tehran, Iran
| | - Seyed Hamid Borsi
- Department of Internal Medicine, Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.
| | - Gholamreza Goudarzi
- Department of Environmental Health, Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hanieh Raji
- Department of Internal Medicine, Air Pollution and Respiratory Diseases Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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Weitz CA, Mukhopadhyay B, Das K. Individually experienced heat stress among elderly residents of an urban slum and rural village in India. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 2022; 66:1145-1162. [PMID: 35359160 DOI: 10.1007/s00484-022-02264-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 01/10/2022] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
The elderly are one of the most vulnerable groups to heat-related illnesses and mortality. In tropical countries like India, where heat waves have increased in frequency and severity, few studies have focused on the level of stress experienced by the elderly. The study presented here included 130 elderly residents of Kolkata slums and 180 elderly residents of rural villages about 75 km south of Kolkata. It used miniature monitoring devices to continuously measure temperature, humidity, and heat index experienced during everyday activities over 24-h study periods, during hot summer months. In the Kolkata slum, construction materials and the urban heat island effect combined to create hotter indoor than outdoor conditions throughout the day, and particularly at night. As a result, elderly slum residents were 4.3 times more likely to experience dangerous heat index levels (≥ 45°C) compared to rural village elderly. In both locations, the median 24-h heat indexes of active elderly were up to 2°C higher than inactive/sedentary elderly (F = 25.479, p < 0.001). Among Kolkata slums residents, there were no significant gender differences in heat exposure during the day or night, but in the rural village, elderly women were 4 times more likely to experience dangerous heat index levels during the hottest times of the day compared to elderly men. Given the decline in thermoregulatory capacity associated with aging and the increasing severity of extreme summer heat in India, these results forecast a growing public health challenge that will require both scientific and government attention.
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Affiliation(s)
- Charles A Weitz
- Department of Anthropology, Temple University, 214 Gladfelter Hall, Philadelphia, PA, USA.
| | - Barun Mukhopadhyay
- Formerly, Biological Anthropology Unit, Indian Statistical Institute, Kolkata, 700 108, India
- Indian Anthropological Society, Kolkata, 700 019, India
| | - Ketaki Das
- West Bengal Voluntary Health Association, Kolkata, 700107, India
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13
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Ingole V, Sheridan SC, Juvekar S, Achebak H, Moraga P. Mortality risk attributable to high and low ambient temperature in Pune city, India: A time series analysis from 2004 to 2012. ENVIRONMENTAL RESEARCH 2022; 204:112304. [PMID: 34743894 DOI: 10.1016/j.envres.2021.112304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 10/24/2021] [Accepted: 10/26/2021] [Indexed: 06/13/2023]
Abstract
BACKGROUND Exposure to high and low ambient temperatures is associated with morbidity and mortality across the globe. Most of these studies assessing the effects of non-optimum temperatures on health and have been conducted in the developed world, whereas in India, the limited evidence on ambient temperature and health risks and has focused mostly on the effects of heat waves. Here we quantify short term association between all temperatures and mortality in urban Pune, India. METHODS We applied a time series regression model to derive temperature-mortality associations based on daily mean temperature and all-cause mortality records of Pune city from year January 2004 to December 2012. We estimated high and low temperature-mortality relationships by using standard time series quasi-Poisson regression in conjunction with a distributed lag non-linear model (DLNM). We calculated temperature attributable mortality fractions for total heat and total cold. FINDINGS The analysis provides estimates of the total mortality burden attributable to ambient temperature. Overall, 6∙5% [95%CI 1.76-11∙43] of deaths registered in the observational period were attributed to non-optimal temperatures, cold effect was greater 5.72% [95%CI 0∙70-10∙06] than heat 0∙84% [0∙35-1∙34]. The gender stratified analysis revealed that the highest burden among men both for heat and cold. CONCLUSION Non-optimal temperatures are associated with a substantial mortality burden. Our findings could benefit national, and local communities in developing preparedness and prevention strategies to reduce weather-related impacts immediately due to climate change.
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Affiliation(s)
- Vijendra Ingole
- Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia.
| | - Scott C Sheridan
- Department of Geography, Kent State University, Kent, OH, 44242, USA
| | - Sanjay Juvekar
- Vadu Rural Health Program, KEM Hospital Research Centre, Pune, India
| | | | - Paula Moraga
- Computer, Electrical and Mathematical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, 23955-6900, Saudi Arabia
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Singh N, Mall RK, Banerjee T, Gupta A. Association between climate and infectious diseases among children in Varanasi city, India: A prospective cohort study. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 796:148769. [PMID: 34274660 DOI: 10.1016/j.scitotenv.2021.148769] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 06/25/2021] [Accepted: 06/27/2021] [Indexed: 06/13/2023]
Abstract
The effects of climate on infectious diseases could influence the health impacts, particularly in children in countries with the unfair socioeconomic conditions. In a prospective cohort of 461 children under 16-years-of-age in Varanasi city, India, the association of maximum-temperature (Tmax), relative humidity (RH), absolute humidity (AH), rainfall (RF), wind-speed (WS), and solar radiation (SLR) with prevalent infectious diseases (Diarrhea, Common cold and flu, Pneumonia, Skin-disease and Malaria, and Dengue) was examined using binomial-regression, adjusting for confounders and effect modifiers (socioeconomic-status; SES and child anthropometry), from January 2017 to January 2020. Attributable-fraction (AFx) was calculated due to each climate variable for each infectious disease. The result showed that each unit (1 °C) rise in Tmax was associated with an increase in diarrhea and skin-disease cases by 3.97% (95% CI: 2.92, 5.02) and 3.94% (95% CI: 1.67, 6.22), respectively, whereas, a unit decline in Tmax was associated with an increase in cold and flu cases by 3.87% (95% CI: 2.97, 4.76). Rise in humidity (RH) was associated with increase in cases of cold and flu by 0.73% (95% CI: 0.38, 1.08) and malaria (AH) by 7.19% (95% CI: 1.51, 12.87) while each unit (1 g/m3) decrease in humidity (AH) observed increase in pneumonia cases by 3.02% (95% CI: 0.75, 5.3). WS was positively associated with diarrhea (14.16%; 95% CI: 6.52, 21.80) and negatively with dengue (17.40%; 12.32, 22.48) cases for each unit change (kmph). RF showed marginal association while SLR showed no association at all. The combined AFx due to climatic factors ranged from 9 to 18%. SES and anthropometric parameters modified the climate-morbidity association in children with a high proportion of children found suffering from stunting, wasting, and underweight conditions. Findings from this study draw the attention of government and policymakers to prioritize effective measures for child health as the present association may increase disease burden in the future under climate-change scenarios in already malnourished paediatric population through multiple pathways.
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Affiliation(s)
- Nidhi Singh
- DST-Mahamana Centre of Excellence in Climate Change Research, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
| | - R K Mall
- DST-Mahamana Centre of Excellence in Climate Change Research, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India.
| | - T Banerjee
- DST-Mahamana Centre of Excellence in Climate Change Research, Institute of Environment and Sustainable Development, Banaras Hindu University, Varanasi, India
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Abstract
Crucial changes in urban climate can be witnessed due to rapid urbanisation of cities across the world. It is important to find a balance between urban expansion and thermal environment quality to guarantee sustainable urban development. Thus, it is a major research priority to study the urban heat island (UHI) in various fields, i.e., climate change urban ecology, urban climatology, urban planning, mitigation and management, urban geography, etc. The present study highlighted the interrelationship between land surface temperature (LST) and the abundance of impervious cover and green cover in the Varanasi city of Uttar Pradesh, India. For this purpose, we used various GIS and remote-sensing techniques. Landsat 8 images, land-use–land-cover pattern including urban/rural gradients, and grid- and metric-based multi-resolution techniques were used for the analysis. From the study, it was noticed that LST, density of impervious cover, and density of green cover were correlated significantly, and an urban gradient existed over the entire city, depicting a typical UHI profile. It was also concluded that the orientation, randomness, and aggregation of impervious cover and green cover have a strong correlation with LST. From this study, it is recommended that, when planning urban extension, spatial variation of impervious cover and green cover are designed properly to ensure the comfort of all living beings as per the ecological point of view.
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Wei Y, Tiwari AS, Li L, Solanki B, Sarkar J, Mavalankar D, Schwartz J. Assessing mortality risk attributable to high ambient temperatures in Ahmedabad, 1987 to 2017. ENVIRONMENTAL RESEARCH 2021; 198:111232. [PMID: 33965390 PMCID: PMC8169607 DOI: 10.1016/j.envres.2021.111232] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 02/07/2021] [Accepted: 04/23/2021] [Indexed: 06/07/2023]
Abstract
BACKGROUND Studies on high temperatures and mortality have not focused on underdeveloped tropical regions and have reported the associations of different temperature metrics without conducting model selection. METHODS We collected daily mortality and meteorological data including ambient temperatures and humidity in Ahmedabad during summer, 1987-2017. We proposed two cross-validation (CV) approaches to compare semiparametric quasi-Poisson models with different temperature metrics and heat wave definitions. Using the fittest model, we estimated heat-mortality associations among general population and subpopulations. We also conducted separate analyses for 1987-2002 and 2003-2017 to evaluate temporal heterogeneity. FINDINGS The model with maximum and minimum temperatures and without heat wave indicator gave the best performance. With this model, we found a substantial and significant increase in mortality rate starting from maximum temperature at 42 °C and from minimum temperature at 28 °C: 1 °C increase in maximum and minimum temperatures at lag 0 were associated with 9.56% (95% confidence interval [CI]: 6.64%, 12.56%) and 9.82% (95% CI: 6.33%, 13.42%) increase in mortality risk, respectively. People aged ≥65 years and lived in South residential zone where most slums were located, were more vulnerable. We observed flatter increases in mortality risk associated with high temperatures comparing the period of 2003-2017 to 1987-2002. INTERPRETATION The analyses provided better understanding of the relationship of high temperatures with mortality in underdeveloped tropical regions and important implications in developing heat warning system for local government. The proposed CV approaches will benefit future scientific work.
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Affiliation(s)
- Yaguang Wei
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA.
| | - Abhiyant Suresh Tiwari
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Longxiang Li
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
| | - Bhavin Solanki
- Health Department, Ahmedabad Municipal Corporation, Ahmedabad, Gujarat, India
| | - Jayanta Sarkar
- India Meteorological Department, Ahmedabad, Gujarat, India
| | - Dileep Mavalankar
- Indian Institute of Public Health, Gandhinagar, Gandhinagar, Gujarat, India
| | - Joel Schwartz
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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Yadav D, Rangabhashiyam S, Verma P, Singh P, Devi P, Kumar P, Hussain CM, Gaurav GK, Kumar KS. Environmental and health impacts of contaminants of emerging concerns: Recent treatment challenges and approaches. CHEMOSPHERE 2021; 272:129492. [PMID: 35534951 DOI: 10.1016/j.chemosphere.2020.129492] [Citation(s) in RCA: 83] [Impact Index Per Article: 27.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 11/30/2020] [Accepted: 12/26/2020] [Indexed: 06/14/2023]
Abstract
In the past few decades, new contaminants of emerging concern (CECs) in the air, water, and soil have gained significant attention due to their adverse impact on human health and the environment. The sources of CECs have been identified in different forms from domestic and industrial activities such as personal care products and pharmaceuticals. It has been established that aqueous medium plays a major role in the dissemination of various contaminants, like drinking water, reservoirs, lakes, rivers and waste with water medium. There remains inadequate technology for the treatment of CECs in the wastewater systems. Though different techniques have advanced for the treatment of CECs, they still pose a severe threat to human health and disturb the ecological balance. In this review, the characteristics, recent technologies, risk assessment and management of CECs have been discussed. The primary aim is to highlight the new innovative and cost-effective technologies for the remediations of CECs in all forms. Biochar is readily and economically available in abundance and an economical adsorbent with 100% adsorptive removal for H2PO4-. The bibliometric analysis also performed to understand the emerging research trends on the treatment techniques, which can help in developing a guiding pathway to modern research in academia and industry.
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Affiliation(s)
- Deepak Yadav
- Chemical Engineering Department, Harcourt Butler Technical University (Formerly HBTI), Kanpur, India.
| | - S Rangabhashiyam
- Department of Biotechnology, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur, 613401, Tamilnadu, India
| | - Pramit Verma
- Integrative Ecology Laboratory (IEL), Institute of Environment & Sustainable Development (IESD), Banaras Hindu University, Varanasi, India
| | - Pardeep Singh
- Department of Environment Studies, PGDAV College University of Delhi, New Delhi, India.
| | - Pooja Devi
- CSIR- Central Scientific Instruments Organisation, Sector-30C, Chandigarh, India
| | - Pradeep Kumar
- Department of Chemical Engineering & Technology, IIT (BHU), Varanasi, India
| | - Chaudhery Mustansar Hussain
- Department of Chemistry and Environment Science, New Jersey Institute of Technology, Newark, New Jersey, 07102, USA
| | - Gajendra Kumar Gaurav
- Ministry of Education Key Laboratory of Integrated Regulation and Resource Developmenton Shallow Lakes and College of Civil, Hohai University, Nanjing, 210098, PR China
| | - Kuppusamy Sathish Kumar
- Key Laboratory of Integrated Regulation and Resource Development of Shallow Lakes,Ministry of Education, College of Environment, Hohai University, Nanjing, Jiangsu Province, PR China
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Dimitrova A, Ingole V, Basagaña X, Ranzani O, Milà C, Ballester J, Tonne C. Association between ambient temperature and heat waves with mortality in South Asia: Systematic review and meta-analysis. ENVIRONMENT INTERNATIONAL 2021; 146:106170. [PMID: 33395923 DOI: 10.1016/j.envint.2020.106170] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 09/16/2020] [Accepted: 09/26/2020] [Indexed: 06/12/2023]
Abstract
BACKGROUND South Asia is highly vulnerable to climate change and is projected to experience some of the highest increases in average annual temperatures throughout the century. Although the adverse impacts of ambient temperature on human health have been extensively documented in the literature, only a limited number of studies have focused on populations in this region. OBJECTIVES Our aim was to systematically review the current state and quality of available evidence on the direct relationship between ambient temperature and heat waves and all-cause mortality in South Asia. METHODS The databases Pubmed, Web of Science, Scopus and Embase were searched from 1990 to 2020 for relevant observational quantitative studies. We applied the Navigation Guide methodology to assess the strength of the evidence and performed a meta-analysis based on a novel approach that allows for combining nonlinear exposure-response associations without access to data from individual studies. RESULTS From the 6,759 screened papers, 27 were included in the qualitative synthesis and five in a meta-analysis. Studies reported an association of all-cause mortality with heat wave episodes and both high and low daily temperatures. The meta-analysis showed a U-shaped pattern, with increasing mortality for both high and low temperatures, but a statistically significant association was found only at higher temperatures - above 31° C for lag 0-1 days and above 34° C for lag 0-13 days. Effects were found to vary with cause of death, age, sex, location (urban vs. rural), level of education and socio-economic status, but the profile of vulnerabilities was somewhat inconsistent and based on a limited number of studies. Overall, the strength of the evidence for ambient temperature as a risk factor for all-cause mortality was judged as limited and for heat wave episodes as inadequate. CONCLUSIONS The evidence base on temperature impacts on mortality in South Asia is limited due to the small number of studies, their skewed geographical distribution and methodological weaknesses. Understanding the main determinants of the temperature-mortality association as well as how these may evolve in the future in a dynamic region such as South Asia will be an important area for future research. Studies on viable adaptation options to high temperatures for a region that is a hotspot for climate vulnerability, urbanisation and population growth are also needed.
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Affiliation(s)
- Asya Dimitrova
- Barcelona Institute for Global Health (ISGlobal), Barcelona Biomedical Research Park (PRBB), Doctor Aiguader, 88, 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), Plaça de la Mercè, 10, 08002 Barcelona, Spain; CIBER Epidemiología y Salud Pública, Avda. Monforte de Lemos 3-5, Madrid, Spain
| | - Vijendra Ingole
- Barcelona Institute for Global Health (ISGlobal), Barcelona Biomedical Research Park (PRBB), Doctor Aiguader, 88, 08003 Barcelona, Spain; CIBER Epidemiología y Salud Pública, Avda. Monforte de Lemos 3-5, Madrid, Spain
| | - Xavier Basagaña
- Barcelona Institute for Global Health (ISGlobal), Barcelona Biomedical Research Park (PRBB), Doctor Aiguader, 88, 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), Plaça de la Mercè, 10, 08002 Barcelona, Spain; CIBER Epidemiología y Salud Pública, Avda. Monforte de Lemos 3-5, Madrid, Spain
| | - Otavio Ranzani
- Barcelona Institute for Global Health (ISGlobal), Barcelona Biomedical Research Park (PRBB), Doctor Aiguader, 88, 08003 Barcelona, Spain; CIBER Epidemiología y Salud Pública, Avda. Monforte de Lemos 3-5, Madrid, Spain
| | - Carles Milà
- Barcelona Institute for Global Health (ISGlobal), Barcelona Biomedical Research Park (PRBB), Doctor Aiguader, 88, 08003 Barcelona, Spain; CIBER Epidemiología y Salud Pública, Avda. Monforte de Lemos 3-5, Madrid, Spain
| | - Joan Ballester
- Barcelona Institute for Global Health (ISGlobal), Barcelona Biomedical Research Park (PRBB), Doctor Aiguader, 88, 08003 Barcelona, Spain; CIBER Epidemiología y Salud Pública, Avda. Monforte de Lemos 3-5, Madrid, Spain
| | - Cathryn Tonne
- Barcelona Institute for Global Health (ISGlobal), Barcelona Biomedical Research Park (PRBB), Doctor Aiguader, 88, 08003 Barcelona, Spain; Universitat Pompeu Fabra (UPF), Plaça de la Mercè, 10, 08002 Barcelona, Spain; CIBER Epidemiología y Salud Pública, Avda. Monforte de Lemos 3-5, Madrid, Spain.
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Regional Temperature-Sensitive Diseases and Attributable Fractions in China. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 17:ijerph17010184. [PMID: 31888051 PMCID: PMC6982219 DOI: 10.3390/ijerph17010184] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 12/23/2019] [Accepted: 12/25/2019] [Indexed: 12/12/2022]
Abstract
Few studies have been carried out to systematically screen regional temperature-sensitive diseases. This study was aimed at systematically and comprehensively screening both high- and low-temperature-sensitive diseases by using mortality data from 17 study sites in China located in temperate and subtropical climate zones. The distributed lag nonlinear model (DLNM) was applied to quantify the association between extreme temperature and mortality to screen temperature-sensitive diseases from 18 kinds of diseases of eight disease systems. The attributable fractions (AFs) of sensitive diseases were calculated to assess the mortality burden attributable to high and low temperatures. A total of 1,380,713 records of all-cause deaths were involved. The results indicate that injuries, nervous, circulatory and respiratory diseases are sensitive to heat, with the attributable fraction accounting for 6.5%, 4.2%, 3.9% and 1.85%, respectively. Respiratory and circulatory diseases are sensitive to cold temperature, with the attributable fraction accounting for 13.3% and 11.8%, respectively. Most of the high- and low-temperature-sensitive diseases seem to have higher relative risk in study sites located in subtropical zones than in temperate zones. However, the attributable fractions for mortality of heat-related injuries were higher in temperate zones. The results of this research provide epidemiological evidence of the relative burden of mortality across two climate zones in China.
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Lu L, Weng Q, Guo H, Feng S, Li Q. Assessment of urban environmental change using multi-source remote sensing time series (2000-2016): A comparative analysis in selected megacities in Eurasia. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 684:567-577. [PMID: 31158620 DOI: 10.1016/j.scitotenv.2019.05.344] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Revised: 05/14/2019] [Accepted: 05/22/2019] [Indexed: 06/09/2023]
Abstract
Excessive urban growth has led to an urban environmental degradation in megacities in less developed countries. Using fine particulate matter (PM2.5) concentration, land surface temperature (LST), and normalized difference vegetation index (NDVI) data obtained by satellite remote sensing, we analysed the inter-annual variations and trends in the urban environment of 17 megacities in Eurasia from 2000 to 2016. Taking the average environmental condition for all the megacities in 2000 as the baseline, the urban environmental conditions were evaluated by a Comprehensive Environmental Index (CEI) from 2001 to 2016. The variation and trends analysis of CEI revealed that the overall environmental conditions in Chennai, Dhaka, Kolkata and Tianjin showed significant deterioration trends. Environmental qualities in newly developed urban areas experienced degradation in Bangalore, Beijing, and Mumbai. The area of environmentally deteriorated urban land has been expanding in Bangalore, Chennai, Delhi, Kolkata, and Mumbai in India and Dhaka in Bangladesh since 2001. By contrast, the area of environmentally degraded urban land in Chinese megacities expanded to the largest extent in the period of 2007-2009 and decreased afterwards. The result suggests that greening and strong emission control strategies significantly contributed to urban environmental quality enhancement in rapidly developing megacities.
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Affiliation(s)
- Linlin Lu
- Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, PR China.
| | - Qihao Weng
- Center for Urban and Environmental Change, Department of Earth and Environmental Systems, Indiana State University, Terre Haute, IN 47809, USA
| | - Huadong Guo
- Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, PR China
| | - Suyun Feng
- Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, PR China
| | - Qingting Li
- Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, PR China
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