气候变化领域集成服务门户(CCPortal): Direct Radiative Forcing Induced by Light-Absorbing Aerosols in Different Climate Regions Over East Asia

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DOI	10.1029/2019JD032228
	Direct Radiative Forcing Induced by Light-Absorbing Aerosols in Different Climate Regions Over East Asia
	Zhang X.; Chen S.; Kang L.; Yuan T.; Luo Y.; Alam K.; Li J.; He Y.; Bi H.; Zhao D.
发表日期	2020
ISSN	2169897X
卷号	125 期号:14
英文摘要	Light-absorbing aerosols (LAAs), mainly composed of black carbon (BC) and dust aerosols, are responsible for significant climate forcing through their strong absorption of solar radiation. A fully coupled meteorology-chemistry model (WRF-Chem) associated with satellite retrievals and in situ measurements is used to investigate the direct radiative forcing (DRF) induced by LAAs in different climate regions over East Asia. Results show that the annual all-sky dust and BC DRF are −0.84 and 1.06 W m−2 at the top of atmosphere (TOA), −1.23 and −1.55 W m−2 at the surface (SUR), and 0.39 and 2.61 W m−2 within the atmosphere (ATM) over East Asia. Large LAAs DRF can be found in hyper-arid, subhumid, and humid regions at the SUR and ATM where dust DRF dominates the surface cooling effect, while BC DRF is predominant in the eminent warming effect on ATM in most climate regions. The meteorological conditions in hyper-arid region are associated with enhanced surface wind and weakened atmospheric wind, which is in favor of the emission and accumulation of dust supporting the positive LAAs DRF anomalies higher than 10 W m−2 in hyper-arid region. The positive geopotential height anomalies over Northeast China weaken the westerly winds, which is beneficial to the accumulation of LAAs, and results in the positive LAAs DRF anomalies of 3 W m−2 in semiarid regions. The large LAAs mass loading, strong aerosol absorptive ability, and decreased cloudiness caused by northerly anomalies are responsible for the high LAAs DRF in humid region. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	black carbon; climate region; dust; East Asia; light-absorbing aerosols; radiative forcing
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185893
作者单位	Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, Lanzhou University, Lanzhou, China; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Physics, University of PeshawarKhyber Pakhtunkhwa, Pakistan; College of Earth and Environmental Sciences, Lanzhou University, Lanzhou, China
推荐引用方式 GB/T 7714	Zhang X.,Chen S.,Kang L.,et al. Direct Radiative Forcing Induced by Light-Absorbing Aerosols in Different Climate Regions Over East Asia[J],2020,125(14).
APA	Zhang X..,Chen S..,Kang L..,Yuan T..,Luo Y..,...&Zhao D..(2020).Direct Radiative Forcing Induced by Light-Absorbing Aerosols in Different Climate Regions Over East Asia.Journal of Geophysical Research: Atmospheres,125(14).
MLA	Zhang X.,et al."Direct Radiative Forcing Induced by Light-Absorbing Aerosols in Different Climate Regions Over East Asia".Journal of Geophysical Research: Atmospheres 125.14(2020).