干旱区生态环境知识资源中心(Arid): Impacts of soil moisture and atmospheric moisture transport on the precipitation in two typical regions of China

Arid

DOI	10.1016/j.atmosres.2020.105151
	Impacts of soil moisture and atmospheric moisture transport on the precipitation in two typical regions of China
	Yuan, Guanghui; Zhang, Lei; Liu, Yubao
通讯作者	Zhang, L
来源期刊	ATMOSPHERIC RESEARCH
ISSN	0169-8095
EISSN	1873-2895
出版年	2021
卷号	247
英文摘要	The effects of soil moisture and atmospheric moisture flux convergence (MFC) on the precipitation are studied in two typical regions in China, one contains both arid and semi-arid regions and the other encloses humid and semi-humid regions. Eight simulations using the weather research and forecasting (WRF) model are conducted by varying the soil moisture and MFC. It is found that in both regions, MFC has stronger effects on precipitation than soil moisture. By decomposing the precipitation change into sub contributing factors, it is found that the contribution of MFC to precipitation differ greatly between different regions. MFC affects precipitation indirectly through changing the precipitation efficiency and directly by changing the moisture influx in the arid and humid regions, whereas, in the semi-arid regions it affects the precipitation mainly by changing the precipitation efficiency and in the semi-humid regions, mainly through changing the moisture influx. Soil moisture affects the precipitation mainly through modifying the precipitation efficiency. Wet soil conditions can increase the surface pressure and reduce the moisture flux in humid regions. The mechanisms of MFC change are explored by decomposing delta MFC into thermodynamic (delta TH), mean circulation dynamic (delta MCD), and transient eddy (delta TE) components. MFC increases mainly through the positive contribution of delta MCD, while the delta TH and delta TE mostly contribute negatively. Both delta MCD and delta TH contribute to the changes in MFC through the convergence/divergence term, rather than through the advection term. delta TE is negative over the relatively flat regions and positive over the complex terrain with sharp terrain height gradients.
英文关键词	Soil moisture Atmospheric moisture flux convergence Precipitation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000586020600014
WOS关键词	ASIAN SUMMER MONSOON ; LAND-SURFACE ; VERTICAL DIFFUSION ; PART I ; FEEDBACK ; PARAMETERIZATION ; MODEL ; FIELD
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
来源机构	兰州大学 ; 南京信息工程大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327969
作者单位	[Yuan, Guanghui; Liu, Yubao] Nanjing Univ Informat Sci & Technol, Precis Reg Earth Modeling & Informat Ctr, Nanjing, Peoples R China; [Yuan, Guanghui; Zhang, Lei] Lanzhou Univ, Coll Atmospher Sci, Key Lab Semiarid Climate Change, Minist Educ, Lanzhou, Peoples R China; [Liu, Yubao] Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA
推荐引用方式 GB/T 7714	Yuan, Guanghui,Zhang, Lei,Liu, Yubao. Impacts of soil moisture and atmospheric moisture transport on the precipitation in two typical regions of China[J]. 兰州大学, 南京信息工程大学,2021,247.
APA	Yuan, Guanghui,Zhang, Lei,&Liu, Yubao.(2021).Impacts of soil moisture and atmospheric moisture transport on the precipitation in two typical regions of China.ATMOSPHERIC RESEARCH,247.
MLA	Yuan, Guanghui,et al."Impacts of soil moisture and atmospheric moisture transport on the precipitation in two typical regions of China".ATMOSPHERIC RESEARCH 247(2021).