IGSNRR OpenIR  > 历年回溯文献
Land surface temperature data assimilation and its impact on evapotranspiration estimates from the common land model
Meng C. L.; Li Z. L.; Zhan X.; Shi J. C.; Liu C. Y.
KeywordAlgorithms Evapotranspiration Rain Remote Sensing Sensitivity Analysis Solar Energy Space Time Adaptive Processing Surface Chemistry Surface Measurement Surface Properties Surface Tension Water Supply
Source PublicationWater Resources Research
2009
Volume45Issue:2
AbstractA variational data assimilation algorithm for assimilating land surface temperature (LST) in the Common Land Model (COLM) is implemented using the land surface energy balance as the adjoint physical constraint. In this data assimilation algorithm, the evaporative fraction of soil and canopy is adjusted according to the surface temperature observations. The analysis results from COLM with the LST assimilation algorithm compare well with the field observations from AmeriFlux data at four sites with different land surface conditions. These results indicate that the surface temperature assimilation method is efficient and effective when only one observation for each day is available (e.g., an observation at 1400 local solar time). A sensitivity analysis for the COLM estimation of evapotranspiration (ET) is also carried out, and the impact of the surface temperature data assimilation on the ET estimates is assessed. It is found that except for time periods with a heavy rainfall event, the ET estimates with the surface temperature assimilation once per day during 0800-1600 local solar time compare better with the AmeriFlux ET measurements than do those without the LST data assimilation. This study implies that the data assimilation algorithm for assimilating regional-scale remote sensing LST data into COLM is promising. Copyright 2009 by the American Geophysical Union.
Indexed ByEI
Language英语
Document TypeEI期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/24687
Collection历年回溯文献
Recommended Citation
GB/T 7714
Meng C. L.,Li Z. L.,Zhan X.,et al. Land surface temperature data assimilation and its impact on evapotranspiration estimates from the common land model. 2009.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Meng C. L.]'s Articles
[Li Z. L.]'s Articles
[Zhan X.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Meng C. L.]'s Articles
[Li Z. L.]'s Articles
[Zhan X.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Meng C. L.]'s Articles
[Li Z. L.]'s Articles
[Zhan X.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.