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Content Provider | IEEE Xplore Digital Library |
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Author | Chunlin Huang Xin Li Juan Gu |
Copyright Year | 2008 |
Description | Author affiliation: Cold & Arid Regions Environ. & Eng. Res. Inst., CAS (Chunlin Huang; Xin Li; Juan Gu) |
Abstract | We have developed Chinese land data assimilation system (CLDAS). In this system, the Common Land Model (CoLM) is used to simulate land surface processes. The radiative transfer models of thawed and frozen soil, snow, and vegetation are used as observation operators to transfer model predictions into estimated brightness temperatures. The EnKF algorithm is implemented as data assimilation method to integrate modeling and observation. The system is capable of assimilating passive microwave remotely sensed data such as special sensor microwave/imager (SSM/I) and advanced microwave scanning radiometer enhanced for EOS (AMSR-E). In this study, we primarily compare the assimilation results of soil moisture with AMSR-E L3 surface soil moisture products and in situ observations from GAME-Tibet experimental fields. The results indicate that the relationship between the simulated and assimilated surface soil moisture with AMSR-E L3 surface soil moisture products is very low. In comparison with in situ observations from GAME-Tibet experimental fields, the assimilated results of soil moisture are better than the simulated results. Additionally, the assimilated results can describe the thawed-frozen cycle. |
File Size | 727397 |
File Format | |
ISBN | 9781424428076 |
DOI | 10.1109/IGARSS.2008.4779534 |
Language | English |
Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Publisher Date | 2008-07-07 |
Publisher Place | USA |
Access Restriction | Subscribed |
Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
Subject Keyword | Soil moisture Passive microwave remote sensing Surface soil Data assimilation Predictive models Land surface Snow Vegetation mapping Brightness temperature Image sensors Ensemble Kalman filter Land data assimilation multi sensor passive microwave |
Content Type | Text |
Resource Type | Article |
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