气候变化领域集成服务门户(CCPortal): Regional climate responses in East Asia to the black carbon aerosol direct effects from India and China in summer

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DOI	10.1175/JCLI-D-19-0706.1
	Regional climate responses in East Asia to the black carbon aerosol direct effects from India and China in summer
	Chen H.; Zhuang B.; Liu J.; Li S.; Wang T.; Xie X.; Xie M.; Li M.; Zhao M.
发表日期	2020
ISSN	0894-8755
起始页码	9783
结束页码	9800
卷号	33 期号:22
英文摘要	Black carbon (BC) aerosol is a significant and short-lived climate forcing factor. Here, the direct effects of BC emissions from India (IDBC) and China (CNBC) are investigated in East Asia during summer using the state-of-the-art regional climate model RegCM4. In summer, IDBC and CNBC account for approximately 30% and 46% of the total BC emissions in Asia, respectively. The total BC column burden from the two countries and corresponding TOA effective radiative forcing are 1.58 mg m22 and 11.87 W m22 in East Asia, respectively. The regional air temperature increases over 0.3 K at maximum and precipitation decreases 0.028 mm day21 on average. Individually, IDBC and CNBC each can bring about rather different effects on regional climate. IDBC can result in a cooling perturbation accompanied by a substantially increased cloud amount and scattering aerosol loading, resulting in a complex response in the regional precipitation, while CNBC can lead to regional warming, and further induce a local flood in northern China or drought in southern China depending on the opposite but significant circulation anomalies. CNBC plays a dominant role in modulating the regional climate over East Asia due to its higher magnitude, wider coverage, and stronger climate feedback. The direct effect of the total BC from both countries is not a linear combination of that of IDBC and CNBC individually, suggesting that the regional climate responses are highly nonlinear to the emission intensity or aerosol loading, which may be greatly related to the influences of the perturbed atmospheric circulations and climate feedback. © 2020 American Meteorological Society.
英文关键词	Aerosols; Atmospheric radiation; Carbon; Fog; Precipitation (meteorology); Atmospheric circulation; Black carbon aerosol; Circulation anomalies; Different effects; Emission intensity; Linear combinations; Radiative forcings; Regional climate modeling; Climate models; aerosol; black carbon; climate effect; climate feedback; climate forcing; climate modeling; computer simulation; numerical model; regional climate; summer; China; Far East; India
语种	英语
来源期刊	Journal of Climate
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/171042
作者单位	School of Atmospheric Sciences, CMA-NJU Joint Laboratory for Climate Prediction Studies, Jiangsu Collaborative Innovation Center for Climate Change, Nanjing University, Nanjing, China; Department of Geography and Planning, University of Toronto, Toronto, Canada
推荐引用方式 GB/T 7714	Chen H.,Zhuang B.,Liu J.,et al. Regional climate responses in East Asia to the black carbon aerosol direct effects from India and China in summer[J],2020,33(22).
APA	Chen H..,Zhuang B..,Liu J..,Li S..,Wang T..,...&Zhao M..(2020).Regional climate responses in East Asia to the black carbon aerosol direct effects from India and China in summer.Journal of Climate,33(22).
MLA	Chen H.,et al."Regional climate responses in East Asia to the black carbon aerosol direct effects from India and China in summer".Journal of Climate 33.22(2020).