Modulation of springtime surface sensible heating over the Tibetan Plateau on the interannual variability of East Asian dust cycle

doi:10.5194/acp-20-11143-2020

	Modulation of springtime surface sensible heating over the Tibetan Plateau on the interannual variability of East Asian dust cycle
	Xie, Xiaoning 1,2; Duan, Anmin 3; Shi, Zhengguo 1; Li, Xinzhou 1; Sun, Hui 1; Liu, Xiaodong 1,4; Cheng, Xugeng 5; Zhao, Tianliang 5; Che, Huizheng 6; Liu, Yangang 7
刊名	ATMOSPHERIC CHEMISTRY AND PHYSICS
	2020-09-29
卷号	20 期号:18 页码:11143-11159
ISSN号	1680-7316
DOI	10.5194/acp-20-11143-2020
通讯作者	Xie, Xiaoning(xnxie@ieecas.cn)
英文摘要	Previous observational evidence and numerical simulations have revealed that the surface sensible heating in spring (March-April-May, MAM) over the Tibetan Plateau (TPSH) can affect the Asian regional hydrological cycle, surface energy balance, and climate through altering atmospheric heat source of the Tibetan Plateau (TP). This study aims to investigate the impacts of MAM TPSH on the interannual variability of East Asian dust cycle by using CAM4-BAM (version 4 of the Community Atmosphere Model coupled to a bulk aerosol model), MERRA-2 (version 2 of the Modern-Era Retrospective analysis for Research and Applications) surface dust concentration, and TPSH measurements. Our simulations show that the surface dust concentrations over the East Asian (EA) dust source region and over the northwestern Pacific (NP) in MAM are significantly positively correlated with TPSH, with regionally averaged correlation coefficients of 0.49 for EA and 0.44 for NP. Similar positive correlations are also shown between the MAM TPSH measurements averaged over the 73 observation sites and the surface dust concentration from MERRA-2. Simulation-based comparisons between strongest and weakest TPSH years reveal that, the MAM surface dust concentration in the strongest TPSH years increases with relative differences of 13.1% over EA and 36.9% over NP. These corresponding differences are found in MERRA-2 with 22.9% and 13.3% over EA and NP, respectively. Further simulated results show that the processes of whole dust cycles (e.g., dust loading, emission, and transport, as well as dust deposition) are also significantly enhanced during the strongest TPSH years over EA and NP. Through enhancing the TP heat source, stronger TPSH in MAM generates an anticyclonic anomaly in middle and upper troposphere over the TP and over the downstream Pacific region, respectively. These atmospheric circulation anomalies induced by the increased TPSH result in increasing the westerly winds over both EA and NP, which in turn increases dust emissions over the dust source, and dust transport over these two regions, as well as the regional dust cycles. These results suggest that addressing the East Asian dust changes in the future climates requires considering not only increasing greenhouse gas emissions but also the variations of the TP's heat source under global warming.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB40030100] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDA20070103] ; National Natural Science Foundation of China[41991254] ; National Key Research and Development Program of China[2016YFA0601904] ; CAS Light of West China Program[XAB2019A02] ; Youth Innovation Promotion Association (CAS) ; US Department of Energy's Atmospheric System Research (ASR) program
WOS关键词	TRANS-PACIFIC TRANSPORT ; SUMMER MONSOON ; RADIATIVE PROPERTIES ; REGIONAL CLIMATE ; BLACK CARBON ; SIMULATED CLIMATOLOGY ; AEROSOL REANALYSIS ; SIZE DISTRIBUTION ; NORTH PACIFIC ; SNOW COVER
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000576665400003
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Key Research and Development Program of China ; CAS Light of West China Program ; Youth Innovation Promotion Association (CAS) ; US Department of Energy's Atmospheric System Research (ASR) program
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/15406]
专题	地球环境研究所_古环境研究室第四纪科学与全球变化卓越创新中心
通讯作者	Xie, Xiaoning
作者单位	1.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Xian 710061, Peoples R China 2.CAS Ctr Excellence Quaternary Sci & Global Change, Xian 710061, Peoples R China 3.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing 100029, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Nanjing Univ Sci Informat & Technol, China Meteorol Adm, Key Lab Aerosol Cloud Precipitat, Nanjing 210044, Peoples R China 6.Chinese Acad Meteorol Sci, CMA, Inst Atmospher Composit, Key Lab Atmospher Chem, Beijing 100081, Peoples R China 7.Brookhaven Natl Lab, Environm & Climate Sci Dept, Upton, NY 11973 USA
推荐引用方式 GB/T 7714	Xie, Xiaoning,Duan, Anmin,Shi, Zhengguo,et al. Modulation of springtime surface sensible heating over the Tibetan Plateau on the interannual variability of East Asian dust cycle[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(18):11143-11159.
APA	Xie, Xiaoning.,Duan, Anmin.,Shi, Zhengguo.,Li, Xinzhou.,Sun, Hui.,...&Liu, Yangang.(2020).Modulation of springtime surface sensible heating over the Tibetan Plateau on the interannual variability of East Asian dust cycle.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(18),11143-11159.
MLA	Xie, Xiaoning,et al."Modulation of springtime surface sensible heating over the Tibetan Plateau on the interannual variability of East Asian dust cycle".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.18(2020):11143-11159.