干旱区生态环境知识资源中心(Arid): Modeling dust sources, transport, and radiative effects at different altitudes over the Tibetan Plateau

Arid

DOI	10.5194/acp-20-1507-2020
	Modeling dust sources, transport, and radiative effects at different altitudes over the Tibetan Plateau
	Hu, Zhiyuan 1,2,3; Huang, Jianping 1; Zhao, Chun 4; Jin, Qinjian 5; Ma, Yuanyuan 6; Yang, Ben 7
通讯作者	Huang, Jianping
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
EISSN	1680-7324
出版年	2020
卷号	20 期号:3 页码:1507-1529
英文摘要	Mineral dust plays an important role in the climate of the Tibetan Plateau (TP) by modifying the radiation budget, cloud macro- and microphysics, precipitation, and snow albedo. Meanwhile, the TP, with the highest topography in the world, can affect intercontinental transport of dust plumes and induce typical distribution characteristics of dust at different altitudes. In this study, we conduct a quasi-global simulation to investigate the characteristics of dust source contribution and transport over the TP at different altitudes by using a fully coupled meteorology-chemistry model, the Weather Research and Forecasting model with chemistry (WRF-Chem), with a tracer-tagging technique. Generally, the simulation reasonably captures the spatial distribution of satellite-retrieved dust aerosol optical depth (AOD) at different altitudes. Model results show that dust particles are emitted into atmosphere through updrafts over major desert regions and then transported to the TP. The East Asian dust (mainly from the Gobi and Taklamakan deserts) is transported southward and is lifted up to the TP, contributing a mass loading of 50 mg m(-2) at a height of 3 km and 5 mg m(-2) at a height of 12 km over the northern slope of the TP. Dust from North Africa and the Middle East are concentrated over both of the northern and southern slopes below 6 km, where mass loadings range from 10 to 100 and 1 to 10 mg m(-2) below 3 km and above 9 km, respectively. As the dust is transported to the north and over the TP, mass loadings are 5-10 mg m(-2) above a height of 6 km. The dust mass flux carried from East Asia to the TP is 7.9 Tg yr(-1), mostly occurring at heights of 3-6 km. The dust particles from North Africa and the Middle East are transported eastward following the westerly jet and then are carried into the TP at the west side with dust mass fluxes of 7.8 and 26.6 Tg yr(-1), respectively. The maximum mass flux of the North African dust mainly occurs at 0-3 km (3.9 Tg yr(-1)), while the Middle Eastern dust occurs at 69 km (12.3 Tg yr(-1)). The dust outflow occurs on the east side (-17.89 Tg yr(-1)) and south side (11.22 Tg yr(-1)) of the TP, with a peak value (8.7 Tg yr(-1)) at 6-9 km. Moreover, the dust (by mass) is concentrated within the size range of 1.25-5.0 mu m and the dust (by particle number) is concentrated in the size range of 0.156-1.25 mu m. Compared with other aerosols, the dust contributes to more than 50% of the total AOD over the TP. The direct radiative forcing induced by the dust is -1.28 W m(-2) at the top of the atmosphere (cooling), 0.41 W m(-2) in the atmosphere (warming), and -1.68 W m(-2) at the surface (cooling). Our quantitative analyses of the dust contributions from different source regions and the associated radiative forcing can help us to better understand the role of dust on the climate over the TP and surrounding regions.
类型	Article
语种	英语
国家	Peoples R China ; USA
开放获取类型	gold, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000513068100003
WOS关键词	INDIAN-SUMMER MONSOON ; MINERAL DUST ; INTERCONTINENTAL TRANSPORT ; PACIFIC TRANSPORT ; MIDDLE-EAST ; IN-SITU ; HETEROGENEOUS LANDSCAPE ; ICE NUCLEATION ; SAHARAN DUST ; HEAT-SOURCE
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
来源机构	兰州大学 ; 南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314134
作者单位	1.Lanzhou Univ, Coll Atmospher Sci, Minist Educ, Key Lab Semiarid Climate Change, Lanzhou, Peoples R China; 2.Sun Yat Sen Univ, Sch Atmospher Sci, Zhuhai, Peoples R China; 3.Sun Yat Sen Univ, Guangdong Prov Key Lab Climate Change & Nat Disas, Zhuhai, Peoples R China; 4.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Anhui, Peoples R China; 5.Univ Kansas, Dept Geog & Atmospher Sci, Lawrence, KS 66045 USA; 6.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R China; 7.Nanjing Univ, Sch Atmospher Sci, Nanjing, Peoples R China
推荐引用方式 GB/T 7714	Hu, Zhiyuan,Huang, Jianping,Zhao, Chun,et al. Modeling dust sources, transport, and radiative effects at different altitudes over the Tibetan Plateau[J]. 兰州大学, 南京大学,2020,20(3):1507-1529.
APA	Hu, Zhiyuan,Huang, Jianping,Zhao, Chun,Jin, Qinjian,Ma, Yuanyuan,&Yang, Ben.(2020).Modeling dust sources, transport, and radiative effects at different altitudes over the Tibetan Plateau.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(3),1507-1529.
MLA	Hu, Zhiyuan,et al."Modeling dust sources, transport, and radiative effects at different altitudes over the Tibetan Plateau".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.3(2020):1507-1529.