ORIGINAL RESEARCH
Climate Extremes Increase Air Pollution in China
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1
School of Management, Xiamen University, Xiamen, 361005, China
2
Institute of Western China Economic Research, Southwestern University of Finance and Economics,
Chengdu, 611130, China
Submission date: 2025-05-02
Final revision date: 2025-07-18
Acceptance date: 2025-08-23
Online publication date: 2025-11-12
Corresponding author
Daxin Dong
Institute of Western China Economic Research, Southwestern University of Finance and Economics,
Chengdu, 611130, China
KEYWORDS
TOPICS
ABSTRACT
Existing research has shown that both climate extremes and air pollution have adverse impacts
on human health and the economy. It is worth noting that climate extremes and air pollution are not
independent of each other. The complex relationship between the two needs more research. In this
study, the impacts of climate extremes (extreme low temperature, extreme high temperature, extreme
rainfall, and extreme drought) on ambient air pollution are assessed ex post using a multiple regression
analysis. Based on data from 223 Chinese cities between 2007 and 2020, our analysis generates three
findings. (1) Climate extremes lead to poorer air quality by significantly increasing the concentrations
of black carbon (BC), nitrogen dioxide (NO2), ozone (O3), organic carbon (OC), particulate matter less
than 1 micron in size (PM1), fine particulate matter (PM2.5), particulate matter less than 10 microns in
size (PM10), and sulfur dioxide (SO2). (2) Mechanism analyses suggest that climate extremes increase
energy consumption and depress green innovation, which provides explanations for the deterioration
of air pollution. (3) Although the effects of different types of climate extremes on air quality vary,
in general, it is confirmed that all four types of climate extremes worsen air quality.
CONFLICT OF INTEREST
The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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