干旱区生态环境知识资源中心(Arid): Estimation of Summer Rainfall over an Arid Area using AMSR-E Measurements: A Case Study in Xinjiang, China

Arid

	Estimation of Summer Rainfall over an Arid Area using AMSR-E Measurements: A Case Study in Xinjiang, China
	Wang, Lei; Wen, Jun; Yang, Wen; Tian, Hui; Zhang, Tangtang; Shi, Xiaokang; Li, Xiehui; Zhao, Yizhou; Jiang, Yuan'an; Li, Yuanpeng
通讯作者	Wen, J
来源期刊	SCIENCES IN COLD AND ARID REGIONS
ISSN	1674-3822
出版年	2008
页码	92-104
英文摘要	Rainfall estimate in arid region using passive microwave remote sensing techniques has been a complex issue for some time. The main reason for this difficulty is that the high and variable emissivity of land surfaces greatly aggravates the complexity of the signatures from the rain cloud. The Xinjiang area, located in the northwest of China, holds all the typical characteristics of arid climate. A rainfall algorithm has been developed for this region by using the Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) measurements. The algorithm attempts to use all 12 channels on the AMSR-E instrument and a two-step method calibrated over 11 days of hourly rain-gauge data. First, Stepwise Discriminant Analysis (SDA) used to optimally estimate rain pixels based on all 12 channels, although only three channels were found to be necessary. Next, a rain predicator scattering index was used to estimate rain rates. A linear relationship between the rain rates and the scattering index above the threshold of 3.0K was constructed with a simple approximately linear function. The estimated rain rates were compared with the rain-gauge data used to calibrate the method, and a good relationship was found with a root-mean-square error of 2.1mm/h. The numerical calculations and comparisons show that the algorithm works well in the Xinjiang area
英文关键词	rainfall arid area AMSR-E remote sensing
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000422246700009
WOS关键词	MICROWAVE ; LAND ; PRECIPITATION ; CLASSIFICATION ; ALGORITHMS ; RETRIEVAL
WOS类目	Geography, Physical
WOS研究方向	Physical Geography
Scopus学科分类	Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, 320 Donggang West Rd, Lanzhou 730000, Gansu, Peoples R China.
来源机构	兰州大学 ; 中国科学院西北生态环境资源研究院
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/329117
作者单位	[Wang, Lei; Wen, Jun; Yang, Wen; Tian, Hui; Zhang, Tangtang; Shi, Xiaokang; Li, Yuanpeng] Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Key Lab Climate Environm & Disasters Western Chin, Lanzhou 730000, Gansu, Peoples R China; [Li, Xiehui] Lanzhou Univ, MOE, Coll Resource & Environm, Key Lab Western Chinas Environm Syst, Lanzhou 730000, Gansu, Peoples R China; [Zhao, Yizhou] Xinjiang Climate Ctr, Xining 830002, Peoples R China
推荐引用方式 GB/T 7714	Wang, Lei,Wen, Jun,Yang, Wen,et al. Estimation of Summer Rainfall over an Arid Area using AMSR-E Measurements: A Case Study in Xinjiang, China[J]. 兰州大学, 中国科学院西北生态环境资源研究院,2008:92-104.
APA	Wang, Lei.,Wen, Jun.,Yang, Wen.,Tian, Hui.,Zhang, Tangtang.,...&Li, Yuanpeng.(2008).Estimation of Summer Rainfall over an Arid Area using AMSR-E Measurements: A Case Study in Xinjiang, China.SCIENCES IN COLD AND ARID REGIONS,92-104.
MLA	Wang, Lei,et al."Estimation of Summer Rainfall over an Arid Area using AMSR-E Measurements: A Case Study in Xinjiang, China".SCIENCES IN COLD AND ARID REGIONS (2008):92-104.