气候变化领域集成服务门户(CCPortal): CONSTRAINING THE WATER IMBALANCE IN A LAND DATA ASSIMILATION SYSTEM THROUGH A RECURSIVE ASSIMILATION SCHEME

CCPortal

DOI	10.1109/IGARSS.2016.7729773
	CONSTRAINING THE WATER IMBALANCE IN A LAND DATA ASSIMILATION SYSTEM THROUGH A RECURSIVE ASSIMILATION SCHEME
	Lu, Hui; Yang, Kun; Shi, Jiancheng
通讯作者	Lu, H (通讯作者)
发表日期	2016
ISSN	2153-6996
起始页码	2993
结束页码	2996
英文摘要	Land data assimilation system (LDAS) has been a powerful tool to optimally combine the advantages of microwave remote sensing and land surface model together and then improve the accuracy of land surface fluxes and status estimation. In this study, we developed a land data assimilation system, in which the water imbalance is constrained by using a multiply times assimilation approach. The first step is a standard variational assimilation operating at normal assimilation windows. And then the LDAS will run at an optimal assimilation window for several times to minimize the water imbalance accumulated in the first step. The LDAS is tested over CEOP Mongolia network. The microwave brightness temperature (TB) observation of AMSR-E are assimilated into the LDAS. Sensitivity test which considering the impacts of assimilation frequency and length of assimilation window are conducted. The results show that for soil moisture assimilation 48 hours window with 2 times assimilation could control the accumulated residual into the acceptable region.
英文关键词	Soil moisture; data assimilation; microwave radiance; recursive assimilation; water imbalance
语种	英语
WOS研究方向	Engineering ; Geology ; Remote Sensing
WOS类目	Engineering, Electrical & Electronic ; Geosciences, Multidisciplinary ; Remote Sensing
WOS记录号	WOS:000388114603003
来源期刊	2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258735
推荐引用方式 GB/T 7714	Lu, Hui,Yang, Kun,Shi, Jiancheng. CONSTRAINING THE WATER IMBALANCE IN A LAND DATA ASSIMILATION SYSTEM THROUGH A RECURSIVE ASSIMILATION SCHEME[J]. 中国科学院青藏高原研究所,2016.
APA	Lu, Hui,Yang, Kun,&Shi, Jiancheng.(2016).CONSTRAINING THE WATER IMBALANCE IN A LAND DATA ASSIMILATION SYSTEM THROUGH A RECURSIVE ASSIMILATION SCHEME.2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS).
MLA	Lu, Hui,et al."CONSTRAINING THE WATER IMBALANCE IN A LAND DATA ASSIMILATION SYSTEM THROUGH A RECURSIVE ASSIMILATION SCHEME".2016 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS) (2016).