干旱区生态环境知识资源中心(Arid): 西北干旱区荒漠戈壁陆面过程的数值模拟

Arid

	西北干旱区荒漠戈壁陆面过程的数值模拟
其他题名	Numerical simulation of the land-surface process over desert and gobi in arid region of northwest china
	曹晓彦; 张强
来源期刊	气象学报
ISSN	0577-6619
出版年	2003
卷号	61 期号:2 页码:219-225
中文摘要	首先利用中国西北干旱区陆-气相互作用试验2000年5-6月在甘肃敦煌进行的陆-气相互作用野外试验的观测资料，确定了西北干旱区荒漠戈壁的陆面过程参数，并用这些参数改进了已有的陆面过程模式。然后用该陆面过程模式对敦煌-气相互作用野外试验荒漠戈壁上的大气感热通量、潜热通量、摩擦速度以及净辐射、地表和土壤温度、土壤水分等重要陆面变量进行了模拟，结果表明，模拟值与观测值非常接近，这说明改进后的模式对干旱区陆面过程有较强的模拟能力。
英文摘要	In this paper, the parameters of the land-surface process over Gobi in arid region of Northwest China are ascertained firstly by utilizing the field observation data of " Land-Atmosphere Interaction Experiment over Arid Region of Northwest China" in Dunhuang of Gansu Province from May to June of 2000. For example, the soil thermal capacity mean is (1.12 + 0.27) * 10~-6J/(m-~-K), the soil thermal conductivity mean is 0.2740.017 W/(nvK), the soil thermal diffusivity mean is (2.52 + 0.63) * 10~-7m~2/s. The results are smaller than those got in HEIFE. The surface roughness length is 0.0019 m. The atmospheric transparent coefficient mean is 0.61 which is smaller than that in the wet region. And the parameterized formula of the atmospheric transparent coefficient is got over the desert and Gobi affected by the sand weather. With these parameters the land-surface process model is advanced. Then, the numerical simulations of the sensible heat,the latent heat,the friction velocity , the net radiation, the surface and soil temperatures and the soil moisture over Gobi in the field experiment are done. The correlation coefficients between the simulation results and the observations for the sensible heat flux, the latent heat flux and the friction velocity are 0.95,0.58 and 0.64 respectively. The net radiation maximum is close to 500 W/m~2 The results show that the simulation and the real observation are very close and the advanced model has strong simulative ability for the land-surface process over arid region.
中文关键词	西北干旱区 ; 荒漠戈壁 ; 陆面参数 ; 陆面过程模式
英文关键词	Arid region of Northwest China Gobi Land-surface parameter Land-surface process model
语种	中文
国家	中国
收录类别	CSCD
WOS类目	METEOROLOGY ATMOSPHERIC SCIENCES
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:1303440
来源机构	中国气象局兰州干旱气象研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/204244
作者单位	中国气象局兰州干旱气象研究所, 兰州, 甘肃 730020, 中国
推荐引用方式 GB/T 7714	曹晓彦,张强. 西北干旱区荒漠戈壁陆面过程的数值模拟[J]. 中国气象局兰州干旱气象研究所,2003,61(2):219-225.
APA	曹晓彦,&张强.(2003).西北干旱区荒漠戈壁陆面过程的数值模拟.气象学报,61(2),219-225.
MLA	曹晓彦,et al."西北干旱区荒漠戈壁陆面过程的数值模拟".气象学报 61.2(2003):219-225.