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题名: Evaluation of SMAP, SMOS, and AMSR2 soil moisture retrievals against observations from two networks on the Tibetan Plateau
作者: Chen, Yingying; Yang, Kun; Qin, Jun; Cui, Qian; Lu, Hui; La, Zhu; Han, Menglei; Tang, Wenjun
作者部门: 微波遥感部
通讯作者: Chen, YY (reprint author), Chinese Acad Sci, Inst Tibetan Plateau Res, Key Lab Tibetan Environm Changes & Land Surface, Beijing, Peoples R China. ; Chen, YY (reprint author), CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing, Peoples R China.
关键词: satellite soil moisture products ; soil moisture networks ; Tibetan Plateau ; evaluation
刊名: JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN号: 2169-897X
出版日期: 2017
卷号: 122, 期号:11, 页码:5780-5792
收录类别: SCI
项目资助者: National Key Basic Research Program of China [2013CBA01800, 2015CB953703] ; CMA Special Fund for Scientific Research in the Public Interest [GYHY201306066] ; National Natural Science Foundation of China [41471286]
英文摘要: Two soil moisture and temperature monitoring networks were established in the Tibetan Plateau (TP) during recent years. One is located in a semihumid area (Naqu) of central TP and consists of 56 soil moisture and temperature measurement (SMTM) stations, the other is located in a semiarid area (Pali) of southern TP and consists of 21 SMTM stations. In this study, the station data are used to evaluate soil moisture retrievals from three microwave satellites, i.e., the Soil Moisture Active Passive (SMAP) of NASA, the Soil Moisture and Ocean Salinity (SMOS) of European Space Agency, and the Advanced Microwave Scanning Radiometer 2 (AMSR2) of Japan Aerospace Exploration Agency. It is found that the SMAP retrievals tend to underestimate soil moisture in the two TP networks, mainly due to the negative biases in the effective soil temperature that is derived from a climate model. However, the SMAP product well captures the amplitude and temporal variation of the soil moisture. The SMOS product performs well in Naqu network with acceptable error metrics but fails to capture the temporal variation of soil moisture in Pali network. The AMSR2 products evidently exaggerate the temporal variation of soil moisture in Naqu network but dampen it in Pali network, suggesting its retrieval algorithm needs further improvements for the TP.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.nssc.ac.cn/handle/122/6003
Appears in Collections:微波遥感部_期刊论文

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