干旱区生态环境知识资源中心(Arid): 农牧交错带陆面过程的数值模拟研究

Arid

	农牧交错带陆面过程的数值模拟研究
其他题名	Numerical Simulation Research of Land Surface Process in the Region between Cropland and Pasture
	赵海英 1; 郭振海 2; 张宏昇 3; 何金海 1
ISSN	1006-9585
出版年	2006
卷号	11 期号:4 页码:535-545
中文摘要	利用CLM(Common Land Model)模式对我国内蒙古奈曼旗农牧交错带沙漠和农田两种不同典型下垫面的陆面过程进行了数值模拟试验,并与外场试验观测结果进行了对比分析.结果表明:无论是沙漠还是农田试验,CLM都能够较好地模拟其辐射通量和土壤中的热传导特征,CLM的模拟结果能够真实地再现试验期间土壤热传导过程对天气过程的响应.相比而言,模式对沙漠地区长波辐射通量和干燥时期短波辐射通量的模拟结果好于农田,其原因可能是因为农田下垫面植被及土壤特征较沙漠复杂,有着很大的不确定性,造成了农田地表反照率和温度模拟的偏差.而对农田热传导的模拟结果好于沙漠,反映了CLM对含水量较大、持水力较强的农田下垫面的热传导模拟能力较好,而对含水量较小、持水力较弱的沙漠下垫面的热传导模拟能力相对较差.
英文摘要	In this paper, CLM (common land model) is introduced and numerical simulation test is carried out in desert and cropland respectively , and comparing analysis with observational data of corresponding sites is also made in the region between cropland and pasture in naiman of neimeng province in China. The results of this test show that CLM can effectively simulate the characteristics of radiation flux and thermal conduction of soil in both desert and cropland tests. Furthermore, the simulation of CLM can realistically reproduce the response of thermal conduc?tion in soil to weather process which happened during the test period. But in comparing, as for the simulation of longwave radiation flux in whole test period and shortwave radiation flux in dry period, the result of desert test is better than that of the cropland test, because vegetation and soil feature of cropland is more complicated than those of desert, and to specify them exactly is unpractical, which cause the simulative difference of albedo and land sur?face temperature in cropland test. But for the simulation of thermal conduction, the result of cropland test is better. This indicate that CLM has a better thermal conduction simulating ability to such land surface as cropland which has big water content and is good at maintain water while has a worse ability to those dry land surface as desert.
中文关键词	陆面过程 ; CLM模式 ; 农牧交错带 ; 热传导
英文关键词	land surface process CLM model region between cropland and pasture thermal conduction
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:2630744
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/219992
作者单位	1.南京信息工程大学大气科学系, 南京, 江苏 210044, 中国; 2.中国科学院大气物理研究所, 大气科学和地球流体力学数值模拟国家重点实验室, 北京 100029, 中国; 3.北京大学物理学院大气科学系, 北京 100871, 中国
推荐引用方式 GB/T 7714	赵海英,郭振海,张宏昇,等. 农牧交错带陆面过程的数值模拟研究[J]. 北京大学,2006,11(4):535-545.
APA	赵海英,郭振海,张宏昇,&何金海.(2006).农牧交错带陆面过程的数值模拟研究.,11(4),535-545.
MLA	赵海英,et al."农牧交错带陆面过程的数值模拟研究".11.4(2006):535-545.