干旱区生态环境知识资源中心(Arid): Performance of WRF Large Eddy Simulations in Modeling the Convective Boundary Layer over the Taklimakan Desert, China

Arid

	Performance of WRF Large Eddy Simulations in Modeling the Convective Boundary Layer over the Taklimakan Desert, China
	Xu Hongxiong; Wang Minzhong; Wang Yinjun; Cai Wenyue
来源期刊	Journal of Meteorological Research
ISSN	2095-6037
出版年	2018
卷号	32 期号:6 页码:1011-1025
英文摘要	The maximum height of the convective boundary layer(CBL) over the Taklimakan Desert can exceed 5000 m during summer and plays a crucial role in the regional circulation and weather. We combined the Weather Research and Forecasting Large Eddy Simulation(WRF-LES) with data from Global Positioning System(GPS) radiosondes and from eddy covariance stations to evaluate the performance of the WRF-LES in simulating the characteristics of the deep CBL over the central Taklimakan Desert. The model reproduced the evolution of the CBL processes reasonably well, but the simulations generated warmer and moister conditions than the observation as a result of the over-prediction of surface fluxes and large-scale advection. Further simulations were performed with multiple configurations and sensitivity tests. The sensitivity tests for the lateral boundary conditions(LBCs) showed that the model results are sensitive to changes in the time resolution and domain size of the specified LBCs. A larger domain size varies the distance of the area of interest from the LBCs and reduces the influence of large forecast errors near the LBCs. Comparing the model results using the original parameterization of sensible heat flux with the Noah land surface scheme and those of the sensitivity experiments showed that the desert CBL is sensitive to the sensible heat flux produced by the land surface scheme during daytime in summer. A reduction in the sensible heat flux can correct overestimates of the potential temperature profile. However, increasing the sensible heat flux significantly reduces the total time needed to increase the CBL to a relatively low altitude(< 3 km) in the middle and initial stages of the development of the CBL rather than producing a higher CBL in the later stages.
英文关键词	Weather Research and Forecasting Model (WRF) Large Eddy Simulation (LES) convective boundary layer (CBL) the Taklimakan Desert
类型	Article
语种	英语
开放获取类型	Other Gold
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6402607
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336051
作者单位	Xu Hongxiong, Chinese Academy of Meteorological Sciences, State Key Laboratory of Severe Weather, Beijing 100081, China.; Wang Yinjun, Chinese Academy of Meteorological Sciences, State Key Laboratory of Severe Weather, Beijing 100081, China.; Wang Minzhong, Chinese Academy of Meteorological Sciences;;Institute of Desert Meteorology, China Meteorological Administration;;Taklimakan Desert Atmospheric Environment Observation Experimental Station, State Key Laboratory of Severe Weather;;;;, ;;Urumqi;;Tazhong, Beijing;;;; 100081;;830002;;841000.; Cai Wenyue, Chinese Academy of Meteorological Sciences;;National Climate Center, China Meteorological Administration, State Key Laboratory of Severe Weather;;, ;;, Beijing;;Beijing 100081;;100081.
推荐引用方式 GB/T 7714	Xu Hongxiong,Wang Minzhong,Wang Yinjun,et al. Performance of WRF Large Eddy Simulations in Modeling the Convective Boundary Layer over the Taklimakan Desert, China[J],2018,32(6):1011-1025.
APA	Xu Hongxiong,Wang Minzhong,Wang Yinjun,&Cai Wenyue.(2018).Performance of WRF Large Eddy Simulations in Modeling the Convective Boundary Layer over the Taklimakan Desert, China.Journal of Meteorological Research,32(6),1011-1025.
MLA	Xu Hongxiong,et al."Performance of WRF Large Eddy Simulations in Modeling the Convective Boundary Layer over the Taklimakan Desert, China".Journal of Meteorological Research 32.6(2018):1011-1025.