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遥感技术与应用  2013, Vol. 28 Issue (1): 27-33    DOI: 10.11873/j.issn.1004-0323.2013.1.27
模型与反演     
积雪属性非均匀性对被动微波遥感积雪的影响
车涛
(中国科学院寒区旱区环境与工程研究所,甘肃 兰州 730000)
Impacts on Passive Microwave Remote Sensing of Snow from Heterogeneities of Snow Properties
Che Tao
(Cold and Arid Regions Environmental and Engineering Research Institute,
Chinese Academy of Sciences,Lanzhou 730000,China)
 全文: PDF(3666 KB)  
摘要:

积雪属性的非均匀性在水平方向上表现为像元内积雪未完全覆盖和雪深分布的不均匀,在垂直方向上表现为积雪剖面上粒径和密度的不一致导致的积雪分层现象。这些积雪属性的非均匀性对被动微波遥感反演雪深或雪水当量带来很大的不确定性,并且给反演结果的验证带来不确定性。通过野外积雪的微波辐射特性观测、遥感积雪产品对比分析、积雪辐射传输模型模拟对这些问题进行阐述和探讨,为今后积雪微波遥感反演算法发展和结果验证提供参考。

关键词: 积雪遥感微波非均匀性    
Abstract:

Heterogeneities of snow properties include the variation of snow depth and the snow cover fraction in the horizontal direction and the variation of grain size and density within a snowpack profile in the vertical direction.These heterogeneities produce great uncertainties to the snow depth or Snow Water Equivalent (SWE) retrieval from passive microwave data,as well as the validation of the results.In this study,we illustrate and discuss these problems based on the field observations of snow microwave radiation characteristics,the comparison of different snow remote sensing products and the modeling of snowpack radiation transfer characteristics,which will provide reference for the algorithm development of microwave remote sensing of snow and result analysis and validation.

Key words: Snow cover    Remote sensing    Microwave    Heterogeneity
收稿日期: 2012-05-22 出版日期: 2013-06-21
:  TP 722.6  
基金资助:

国家自然科学基金项目“非均匀条件下积雪微波辐射特性观测、理解与模拟”(40971188)资助。

作者简介: 车涛(1976-),男,陕西周至人,副研究员,主要从事冰冻圈遥感研究。Email:chetao@lzb.ac.cn。
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引用本文:

车涛. 积雪属性非均匀性对被动微波遥感积雪的影响[J]. 遥感技术与应用, 2013, 28(1): 27-33.

Che Tao. Impacts on Passive Microwave Remote Sensing of Snow from Heterogeneities of Snow Properties. Remote Sensing Technology and Application, 2013, 28(1): 27-33.

链接本文:

http://www.rsta.ac.cn/CN/10.11873/j.issn.1004-0323.2013.1.27        http://www.rsta.ac.cn/CN/Y2013/V28/I1/27

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