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	A very fast simulated re-annealing (VFSA) approach for land data assimilation
	Li, X; Koike, T; Pathmathevan, M
刊名	COMPUTERS & GEOSCIENCES
	2004-04-01
卷号	30期号:3页码:239-248
关键词	simulated annealing data assimilation land surface model microwave remote sensing soil moisture
ISSN号	0098-3004
DOI	10.1016/j.cageo.2003.11.002
通讯作者	Li, X(lixin@ns.lzb.ac.cn)
英文摘要	We develop a new data assimilation algorithm by employing a heuristic optimization approach named very fast simulated re-annealing (VFSA), which is capable of minimizing the cost function without using the adjoint model. The method is independent on model operator and observation operator, and has advantages in dealing with strong nonlinearities and discontinuities. Based on the VFSA algorithm, we design a land data assimilation scheme which can assimilate both the in situ measurement of soil moisture, and the passive microwave remote sensing observations into a land surface model. The scheme is tested with GAME-Tibet observations and TMI brightness temperature. Results show that it works successfully with strongly nonlinear land surface model, SiB2 and the radiative transfer model of moist soil. The cost value calculated from optimized initial state is much smaller and the bias from observations are also significantly reduced. (C) 2004 Elsevier Ltd. All rights reserved.
收录类别	SCI
WOS关键词	SURFACE PARAMETERIZATION SIB2 ; SOIL-MOISTURE ; ATMOSPHERIC GCMS ; TEMPERATURE ; ALGORITHMS ; MODELS
WOS研究方向	Computer Science ; Geology
WOS类目	Computer Science, Interdisciplinary Applications ; Geosciences, Multidisciplinary
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000221028000005
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2555605
专题	寒区旱区环境与工程研究所
通讯作者	Li, X
作者单位	1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Univ Tokyo, Dept Civil Engn, Tokyo 113, Japan
推荐引用方式 GB/T 7714	Li, X,Koike, T,Pathmathevan, M. A very fast simulated re-annealing (VFSA) approach for land data assimilation[J]. COMPUTERS & GEOSCIENCES,2004,30(3):239-248.
APA	Li, X,Koike, T,&Pathmathevan, M.(2004).A very fast simulated re-annealing (VFSA) approach for land data assimilation.COMPUTERS & GEOSCIENCES,30(3),239-248.
MLA	Li, X,et al."A very fast simulated re-annealing (VFSA) approach for land data assimilation".COMPUTERS & GEOSCIENCES 30.3(2004):239-248.

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