干旱区生态环境知识资源中心(Arid): Results of a CLM4 Land Surface Simulation over China Using a Multisource Integrated Land Cover Dataset

Arid

	Results of a CLM4 Land Surface Simulation over China Using a Multisource Integrated Land Cover Dataset
	Yu Yan; Xie Zhenghui; Wang Yuanyuan; Chen Feng
来源期刊	Atmospheric and Oceanic Science Letters
ISSN	1674-2834
出版年	2014
卷号	7 期号:4 页码:279-285
英文摘要	In this study, the high-accuracy multisource integrated Chinese land cover (MICLCover) dataset was used in version 4 of the Community Land Model (CLM4) to assess how the new land cover information affected land surface simulation over China. Compared to the default land cover dataset in CLM4, the MICL data indicated lower values for bare soil (14.6% reduction), needleleaf tree (3.6%), and broadleaf tree (1.9%); higher values for shrub cover (1.8% increase), grassland (9.9%), cropland (5.0%), glaciers (0.5%), lakes (1.6%), and wetland (1.1%); and unchanged for urban areas. Two comparative CLM4 simulations were conducted for the 33-yr period from 1972 to 2004, one using the MICL dataset and the other using the default dataset. The results revealed that the MICL data produced a 0.3% lower mean annual surface albedo over China than the original data. The largest contributor to the reduced value was semiarid regions (2.1% reduction). The MICL-data albedo value agreed more closely with observations (MODIS broad-band black-sky albedo products) over arid and semiarid regions than for the original data to some extent. The simulated average sensible heat flux over China increased by only 0.1 W m~(-2) owing to the reduced values in arid and semiarid regions, as opposed to increases in humid and semihumid regions, while an increased latent heat flux of 1 W m 2 was reflected in almost identical changes over the whole region. In addition, the mean annual runoff simulated by CLM4 using MICL data decreased by 6.8 mm yr~(-1), primarily due to large simulated decreases in humid regions.
英文关键词	land cover MICLCover MODIS land surface simulation CLM4
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5185975
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335377
作者单位	Yu Yan, Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Beijing 100029, China.; Xie Zhenghui, Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Beijing 100029, China.; Wang Yuanyuan, Institute of Atmospheric Physics, Chinese Academy of Sciences, State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics (LASG), Beijing 100029, China.; Chen Feng, Zhejiang Institute of Meteorological Sciences, Hangzhou, Zhejiang 310017, China.
推荐引用方式 GB/T 7714	Yu Yan,Xie Zhenghui,Wang Yuanyuan,et al. Results of a CLM4 Land Surface Simulation over China Using a Multisource Integrated Land Cover Dataset[J],2014,7(4):279-285.
APA	Yu Yan,Xie Zhenghui,Wang Yuanyuan,&Chen Feng.(2014).Results of a CLM4 Land Surface Simulation over China Using a Multisource Integrated Land Cover Dataset.Atmospheric and Oceanic Science Letters,7(4),279-285.
MLA	Yu Yan,et al."Results of a CLM4 Land Surface Simulation over China Using a Multisource Integrated Land Cover Dataset".Atmospheric and Oceanic Science Letters 7.4(2014):279-285.