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	A new satellite-based data assimilation algorithm to determine spatial and temporal variations of soil moisture and temperature profiles
	Pathmathevan, M; Koike, T; Li, X
刊名	JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN
	2003-10-01
卷号	81期号:5页码:1111-1135
ISSN号	0026-1165
通讯作者	Pathmathevan, M()
英文摘要	dThis paper focuses on the development and application of a new One-Dimensional Variational (1DVAR) data assimilation algorithm for estimating the spatial and temporal variations of soil moisture and temperature profiles, by grid-based analysis using remote sensing and in situ observations. This algorithm employs a heuristic optimization approach, simulated annealing (SA), which is capable of minimizing the Variational cost function without using adjoint models. The present assimilation scheme assimilates passive microwave remote sensing observations of brightness temperature into the land surface scheme (LSS), Simple Biosphere Model2 (SiB2). The LSS is used as a model operator, and a Radiative Transfer Model (RTM) is used as an observational operator. The modeling system has been applied, and validated, using data from the GAME-Tibet (Global Energy and Water cycle Experiment (GEWEX) Asian Monsoon Experiment in Tibet) mesoscale field experiment. Compared to SiB2, our assimilation scheme solves the major initialization problem, and estimates the soil temperature and soil moisture at the surface layer and in the root zone with significant improvements.
收录类别	SCI
WOS关键词	REMOTELY-SENSED OBSERVATIONS ; EQUATIONS ; INDEX ; STATE
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	METEOROLOGICAL SOC JPN
WOS记录号	WOS:000187578000012
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2556885
专题	寒区旱区环境与工程研究所
通讯作者	Pathmathevan, M
作者单位	1.Univ Tokyo, Dept Civil Engn, Bunkyo Ku, Tokyo 1138656, Japan 2.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Pathmathevan, M,Koike, T,Li, X. A new satellite-based data assimilation algorithm to determine spatial and temporal variations of soil moisture and temperature profiles[J]. JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN,2003,81(5):1111-1135.
APA	Pathmathevan, M,Koike, T,&Li, X.(2003).A new satellite-based data assimilation algorithm to determine spatial and temporal variations of soil moisture and temperature profiles.JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN,81(5),1111-1135.
MLA	Pathmathevan, M,et al."A new satellite-based data assimilation algorithm to determine spatial and temporal variations of soil moisture and temperature profiles".JOURNAL OF THE METEOROLOGICAL SOCIETY OF JAPAN 81.5(2003):1111-1135.

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