Fast climate responses to emission reductions in aerosol and ozone precursors in China during 2013–2017
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Published:2022-06-02
Issue:11
Volume:22
Page:7131-7142
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ISSN:1680-7324
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Container-title:Atmospheric Chemistry and Physics
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language:en
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Short-container-title:Atmos. Chem. Phys.
Author:
Gao Jiyuan, Yang YangORCID, Wang HailongORCID, Wang PinyaORCID, Li Huimin, Li Mengyun, Ren Lili, Yue XuORCID, Liao Hong
Abstract
Abstract. China has been implementing a sequence of policies for clean
air since the year 2013, and the aerosol pollution has been substantially
improved, but ozone (O3)-related issues arose. Here, fast climate
responses to emission reductions in aerosol and O3 precursors over
China during 2013–2017 are investigated using the Community Earth System
Model version 2 (CESM2). The overall decreases in aerosols produced an
anomalous warming of 0.09 ± 0.10∘C in eastern China
(22–40∘ N, 110–122.5∘ E),
which is further intensified by the increase in O3 in the lower
troposphere, resulting in an enhanced warming of 0.16 ± 0.15 ∘C in eastern China. Reductions in industrial emissions
contributed the most to the aerosol-induced warming, while emission
reductions from residential sector induced a cooling effect due to a
substantial decrease in light-absorbing black carbon aerosols. This implies
that switching the residential sector to cleaner energy is more effective to
achieve climate and health benefits in China.
Funder
National Natural Science Foundation of China National Key Research and Development Program of China Natural Science Foundation of Jiangsu Province for Distinguished Young Scholars
Publisher
Copernicus GmbH
Subject
Atmospheric Science
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