气候变化领域集成服务门户(CCPortal): Study of snow water resources by passive microwave satellite data in China

CCPortal

	Study of snow water resources by passive microwave satellite data in China
	Che, T; Li, X; Gao, F; Armstrong, RL
发表日期	2004
ISSN	2153-6996
起始页码	3674
结束页码	3676
英文摘要	For the estimation of snow water resources in China, the passive microwave remote sensing data (SSM/I) have been used to retrieve the snow depth information. Due to the overestimation of snow depth in West China (especially, the Tibet Plateau regions), the global retrieval algorithm of snow depth from SSM/I data is modified ground observations in West China region. Both of the global and modified algorithms adopt the negative gradient of brightness temperature at 19 and 37GHz frequencies at horizontal polarization that were generated the snow layer's scattering feature. However, other surface features such as the precipitation, cold desert, frozen ground, may have similar scattering signature to snow cover. Grody's decision tree containing various filters, is used to separate the scattering signature of snow cover from other scattering signature. For the snow cover pixels after the filters technique, we retrieved the snow depth by global and modified algorithms in East and West China, respectively. The retrieval results have been assessed by the MODIS snow products (MODISC1 snow products) with two methods of accuracy assessment, i.e. the overall accuracy and Kappa analysis based on the error matrix. The two snow products agree very well based on the overall accuracy and Kappa coefficients.' Finally, the operational scheme has been performed to obtain the snow depth datasets in China in a complete hydrological year.
英文关键词	snow; remote sensing; passive microwave; SSM/I
WOS研究方向	Geology ; Instruments & Instrumentation ; Remote Sensing ; Imaging Science & Photographic Technology
WOS类目	Geosciences, Multidisciplinary ; Instruments & Instrumentation ; Remote Sensing ; Imaging Science & Photographic Technology
WOS关键词	ALGORITHM
WOS记录号	WOS:000227006900967
来源期刊	IGARSS 2004: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM PROCEEDINGS, VOLS 1-7: SCIENCE FOR SOCIETY: EXPLORING AND MANAGING A CHANGING PLANET
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/241003
作者单位	Chinese Acad Sci, Cold & Arid Regions Environm & Engn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Che, T,Li, X,Gao, F,et al. Study of snow water resources by passive microwave satellite data in China[J]. 中国科学院西北生态环境资源研究院,2004.
APA	Che, T,Li, X,Gao, F,&Armstrong, RL.(2004).Study of snow water resources by passive microwave satellite data in China.IGARSS 2004: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM PROCEEDINGS, VOLS 1-7: SCIENCE FOR SOCIETY: EXPLORING AND MANAGING A CHANGING PLANET.
MLA	Che, T,et al."Study of snow water resources by passive microwave satellite data in China".IGARSS 2004: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM PROCEEDINGS, VOLS 1-7: SCIENCE FOR SOCIETY: EXPLORING AND MANAGING A CHANGING PLANET (2004).