Journal article
Future intensification of co-occurrences of heat, PM 2.5 and O 3 extremes in China and India despite stringent air pollution controls
Environmental research letters, Vol.20(1), 014044
01/01/2025
DOI: 10.1088/1748-9326/ad961d
Abstract
Heat and air pollution extremes are two leading global health stressors, both of which are particularly serious in China and India. It is well recognized that exposure to co-occurrence of heat and air pollution extremes will cause amplified health outcomes, yet century‐long understanding of future co‐occurrence remains still lacking. On a basis of sophisticated regional coupled climate-chemistry modeling, we predict future individual and joint occurrence of heat and air pollution extremes in China and India in Decade 2100 relative to Decade 2010. We find intensified co-occurrences of heat and air pollution extremes in both China and India, despite reductions of projected emissions and improved air quality. Under the medium air pollution control of SSP245, frequency of T w &PM&O 3 joint hazards increases by 382% in North India, and 729% in Beijing by the end of this century. Given the significant role of temperature changes in the co-occurrence and larger compounding health impacts, actions are urgently needed to reduce exposure to co-extreme events.
Details
- Title: Subtitle
- Future intensification of co-occurrences of heat, PM 2.5 and O 3 extremes in China and India despite stringent air pollution controls
- Creators
- Meng Gao - Hong Kong Baptist UniversityFan Wang - Hong Kong Baptist UniversityYangyang Xu - Texas A&M UniversityJi Chen - University of Hong KongXiao Lu - Sun Yat-sen UniversityGregory R Carmichael - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Environmental research letters, Vol.20(1), 014044
- Publisher
- IOP Publishing Ltd; BRISTOL
- DOI
- 10.1088/1748-9326/ad961d
- ISSN
- 1748-9326
- eISSN
- 1748-9326
- Grant note
- Environmental and Conservation FundNational Center for Atmospheric Research: 2022YFC3700103 National Key Research and Development Program of China: 42322902, 42375095 National Natural Science Foundation of China: HKBU12201023, HKBU12202021 Research Grants Council of the Hong Kong Special Administrative Region, ChinaCenter for Ocean Research in Hong Kong and Macau (CORE): 121/2022 HKUST, and Environmental and Conservation Fund
We thank the National Center for Atmospheric Research for offering WRF-Chem model for this study and Dr Zhongfeng Xu for providing bias-corrected CMIP6 global dataset. This study was supported by the grants from National Key Research and Development Program of China (2022YFC3700103), National Natural Science Foundation of China (Project Nos. 42322902 and 42375095), the Research Grants Council of the Hong Kong Special Administrative Region, China (Project Nos. C2002-22Y, HKBU12201023 and HKBU12202021), the Center for Ocean Research in Hong Kong and Macau (CORE), a joint research centre between the Laoshan Laboratory and HKUST, and Environmental and Conservation Fund (121/2022).
- Language
- English
- Electronic publication date
- 11/22/2024
- Date published
- 01/01/2025
- Academic Unit
- Nursing; Chemical and Biochemical Engineering; Civil and Environmental Engineering
- Record Identifier
- 9984751754702771
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