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地球科学进展  2004, Vol. 19 Issue (2): 204-210    DOI: 10.11867/j.issn.1001-8166.2004.02.0204
中国科学院寒区旱区环境与工程研究所,甘肃 兰州 730000
CHE Tao, LI Xin
Cold and Arid Regions Environmental and Engineering Research Institute, CAS, Lanzhou 730000, China
 全文: PDF(92 KB)  


关键词: 被动微波遥感;雪水当量SSM/I青藏高原    

Snow water equivalent (SWE) is an important factor in the variable study of snow storage. However, the only adequately way to estimate the spatial coverage and temporal changes of snow cover in a regional scale is via remote sensing. Passive microwave data, as a complement for visible remote sensing data, despite of its coarse resolution, have the capability to penetrate clouds and snow cover and to provide dual polarization information at different frequencies. In fact, passive microwave remote sensing has played a key role in cryosphere research field in past three decades. This paper reviews the researches of monitoring snow using passive microwave remote sensing data at home and abroad. The applicability of existing algorithms (and models) to estimate snow water equivalent is assessed. Then, the retrieval of SWE in the QinghaiTibetan plateau is discussed in detail, to illustrate the complexity of the estimating SWE using SSM/I data in the special region, and to clarify the reasons that lead to the complexity. Finally, a series of methods and solutions are offered, which provide the theory basis for the further dynamic monitoring on snow in the QinghaiTibetan plateau regions. For improving the retrieval accuracy, several aspects should be taken into account, such as detecting wet snow and dry snow, distinguishing the snow cover and frozen soil in the SSM/I subpixel, and comparison of retrieval results and observation data.

Key words: Passive microwave    Remote sensing    Snow water equivalent    SSM/    Qinghai-Tibetan plateau.
收稿日期: 2003-02-09 出版日期: 2004-04-01
ZTFLH:  TP721.1   

国家自然科学基金项目“中国西部地区陆面数据同化系统研究”(编号:90202014)和“青藏高原积雪和冻土的被动微波遥感监测研究”(编号: 49971060)资助.

通讯作者: 车涛(1976-), 男, 陕西周至县人, 博士研究生, 主要从事冰冻圈的被动微波遥感研究.      E-mail:
作者简介: 车涛(1976-), 男, 陕西周至县人, 博士研究生, 主要从事冰冻圈的被动微波遥感研究.
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车涛;李新. 被动微波遥感估算雪水当量研究进展与展望[J]. 地球科学进展, 2004, 19(2): 204-210.



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