Large-scale climate patterns offer preseasonal hints on the co-occurrence of heat wave and O3 pollution in China

Meng Gao; Fan Wang; Yihui Ding; Zhiwei Wu; Yangyang Xu; Xiao Lu; Zifa Wang; Gregory R Carmichael; Michael B McElroy

doi:10.1073/pnas.2218274120

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Large-scale climate patterns offer preseasonal hints on the co-occurrence of heat wave and O3 pollution in China

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Large-scale climate patterns offer preseasonal hints on the co-occurrence of heat wave and O3 pollution in China

Meng Gao, Fan Wang, Yihui Ding, Zhiwei Wu, Yangyang Xu, Xiao Lu, Zifa Wang, Gregory R Carmichael and Michael B McElroy

Proceedings of the National Academy of Sciences - PNAS, Vol.120(26), e2218274120

06/27/2023

DOI: 10.1073/pnas.2218274120

PMCID: PMC10293814

PMID: 37339212

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Abstract

Heat waves and air pollution extremes exert compounding effects on human health and food security and may worsen under future climate change. On the basis of reconstructed daily O3 levels in China and meteorological reanalysis, we found that the interannual variability of the frequency of summertime co-occurrence of heat wave and O3 pollution in China is regulated mainly by a combination of springtime warming in the western Pacific Ocean, western Indian Ocean, and Ross Sea. These sea surface temperature anomalies impose influences on precipitation, radiation, etc., to modulate the co-occurrence, which were also confirmed with coupled chemistry–climate numerical experiments. We thus built a multivariable regression model to predict co-occurrence a season in advance, and correlation coefficient could reach 0.81 (P < 0.01) for the North China Plain. Our results provide useful information for the government to take actions in advance to mitigate damage from these synergistic costressors.

Details

Title: Subtitle: Large-scale climate patterns offer preseasonal hints on the co-occurrence of heat wave and O3 pollution in China
Creators: Meng Gao - Hong Kong Baptist University
Fan Wang - Hong Kong Baptist University
Yihui Ding - China Meteorological Administration
Zhiwei Wu - Fudan University
Yangyang Xu - Texas A&M University
Xiao Lu - Sun Yat-sen University
Zifa Wang - Institute of Atmospheric Physics
Gregory R Carmichael - University of Iowa
Michael B McElroy - Harvard University
Resource Type: Journal article
Publication Details: Proceedings of the National Academy of Sciences - PNAS, Vol.120(26), e2218274120
DOI: 10.1073/pnas.2218274120
PMID: 37339212
PMCID: PMC10293814
NLM abbreviation: Proc Natl Acad Sci U S A
eISSN: 1091-6490
Grant note: DOI: 10.13039/501100002920, name: Research Grants Council, University Grants Committee, award: HKBU22201820; DOI: 10.13039/501100002920, name: Research Grants Council, University Grants Committee, award: HKBU12202021
Language: English
Date published: 06/27/2023
Academic Unit: Civil and Environmental Engineering; Nursing; Chemical and Biochemical Engineering
Record Identifier: 9984436278702771

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