Air quality and climate change, Topic 3 of the Model Inter-Comparison Study for Asia Phase III (MICS-Asia III) – Part 2: aerosol radiative effects and aerosol feedbacks

Meng Gao; Zhiwei Han; Zhining Tao; Jiawei Li; Jeong-Eon Kang; Kan Huang; Xinyi Dong; Bingliang Zhuang; Shu Li; Baozhu Ge; Qizhong Wu; Hyo-Jung Lee; Cheol-Hee Kim; Joshua S Fu; Tijian Wang; Mian Chin; Meng Li; Jung-Hun Woo; Qiang Zhang; Yafang Cheng; Zifa Wang; Gregory R Carmichael

doi:10.5194/acp-20-1147-2020

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Air quality and climate change, Topic 3 of the Model Inter-Comparison Study for Asia Phase III (MICS-Asia III) – Part 2: aerosol radiative effects and aerosol feedbacks

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Air quality and climate change, Topic 3 of the Model Inter-Comparison Study for Asia Phase III (MICS-Asia III) – Part 2: aerosol radiative effects and aerosol feedbacks

Meng Gao, Zhiwei Han, Zhining Tao, Jiawei Li, Jeong-Eon Kang, Kan Huang, Xinyi Dong, Bingliang Zhuang, Shu Li, Baozhu Ge, …

Atmospheric chemistry and physics, Vol.20(2), pp.1147-1161

01/30/2020

DOI: 10.5194/acp-20-1147-2020

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Abstract

Topic 3 of the Model Inter-Comparison Study for Asia (MICS-Asia) Phase III examines how online coupled air quality models perform in simulating wintertime haze events in the North China Plain region and evaluates the importance of aerosol radiative feedbacks. This paper discusses the estimates of aerosol radiative forcing, aerosol feedbacks, and possible causes for the differences among the participating models. Over the Beijing–Tianjin–Hebei (BTH) region, the ensemble mean of estimated aerosol direct radiative forcing (ADRF) at the top of atmosphere, inside the atmosphere, and at the surface are −1.1, 7.7, and −8.8 W m−2 during January 2010, respectively. Subdivisions of direct and indirect aerosol radiative forcing confirm the dominant role of direct forcing. During severe haze days (17–19 January 2010), the averaged reduction in near-surface temperature for the BTH region can reach 0.3–1.6 ∘C. The responses of wind speeds at 10 m (WS10) inferred from different models show consistent declines in eastern China. For the BTH region, aerosol–radiation feedback-induced daytime changes in PM2.5 concentrations during severe haze days range from 6.0 to 12.9 µg m−3 (<6 %). Sensitivity simulations indicate the important effect of aerosol mixing states on the estimates of ADRF and aerosol feedbacks. Besides, black carbon (BC) exhibits a large contribution to atmospheric heating and feedbacks although it accounts for a small share of mass concentration of PM2.5.

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Title: Subtitle: Air quality and climate change, Topic 3 of the Model Inter-Comparison Study for Asia Phase III (MICS-Asia III) – Part 2: aerosol radiative effects and aerosol feedbacks
Creators: Meng Gao
Zhiwei Han
Zhining Tao
Jiawei Li
Jeong-Eon Kang
Kan Huang
Xinyi Dong
Bingliang Zhuang
Shu Li
Baozhu Ge
Qizhong Wu
Hyo-Jung Lee
Cheol-Hee Kim
Joshua S Fu
Tijian Wang
Mian Chin
Meng Li
Jung-Hun Woo
Qiang Zhang
Yafang Cheng
Zifa Wang
Gregory R Carmichael
Resource Type: Journal article
Publication Details: Atmospheric chemistry and physics, Vol.20(2), pp.1147-1161
DOI: 10.5194/acp-20-1147-2020
ISSN: 1680-7324
eISSN: 1680-7324
Grant note: DOI: 10.13039/501100001809, name: National Natural Science Foundation of China, award: 41620104008, 91644217, NSFC91543202; DOI: 10.13039/501100003453, name: Natural Science Foundation of Guangdong Province, award: 2019A1515011633
Language: English
Date published: 01/30/2020
Academic Unit: Civil and Environmental Engineering; Nursing; Chemical and Biochemical Engineering
Record Identifier: 9984066332702771

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