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Precipitation Retrieval Using 118.75-GHz and 183.31-GHz Channels From MWHTS on FY-3C Satellite
Li, Na1; He, Jieying2; Zhang, Shengwei3; Lu, Naimeng4
作者部门微波遥感部
发表期刊IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
2018
DOI10.1109/JSTARS.2018.2873255
ISSN1939-1404
摘要

In this paper, the focus is on precipitation rate retrieval using 118.75 and 183.31-GHz channels from the microwave humidity and temperature sounder (MWHTS) onboard the FY-3C satellite. These channels provide not only atmospheric humidity profile measurements but they also provide temperature profile measurements. These measurements play important roles detecting and retrieving precipitation rates. Data from the MWHTS and the Tropical Rainfall Measuring Mission Multisatellite Precipitation Analysis (TMPA) 3B42 are matched in time and space. Matched datasets are used to verify precipitation detection algorithms and precipitation rate retrieval algorithms. To retrieve the precipitation rate, the multiple linear regression algorithm and back propagation (BP) neutral network algorithm are applied in the ten models proposed in this paper. After detailed retrieval analysis between these two algorithms, advanced algorithms are presented this paper to improve the accuracy of the precipitation rate retrieval. In our algorithms, the correlation coefficient of the precipitation rate over the ocean can reach 0.82, the bias is approximately 0.07mmhr, and the root mean square error (RMSe) is less than 0.4mmhr. Over land, the correlation coefficient is approximately 0.73, the bias is 0.1mmhr, and the RMSe is less than 0.5mmhr. These results show that our retrieval algorithms improve the retrieval accuracy. Moreover, we study a number of typhoons and find that the FY-3C MWHTS works well to retrieve typhoon precipitation rates. The potential sensitivities of the temperature and humidity channels are analyzed, which can improve the retrieval accuracy and lay the foundation for further research. IEEE

收录类别SCI ; EI
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文献类型期刊论文
条目标识符http://ir.nssc.ac.cn/handle/122/6566
专题微波遥感部
作者单位1.Key Laboratory of Microwave Remote Sensing, Chinese Academy of Sciences, National Space Science Center, Beijing 100190, China,and also with the University of Chinese Academy of Sciences, Beijing 100049, China (e-mail: linana696@163.com).;
2.Key Laboratory of Microwave Remote Sensing, Chinese Academy of Sciences, National Space Science Center, Beijing 100190, China (e-mail: hejieying@mirslab.cn).;
3.Key Laboratory of Microwave Remote Sensing, Chinese Academy of Sciences, National Space Science Center, Beijing 100190, China (e-mail: zhangshengwei@mirslab.cn).;
4.Key Laboratory of Radiometric Calibration and Validation for Environmental Satellites and the National Satellite Meteorological Center, China Meteorological Administration, Beijing 100081, China (e-mail: lunm@cma.gov.cn).
推荐引用方式
GB/T 7714
Li, Na,He, Jieying,Zhang, Shengwei,et al. Precipitation Retrieval Using 118.75-GHz and 183.31-GHz Channels From MWHTS on FY-3C Satellite[J]. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing,2018.
APA Li, Na,He, Jieying,Zhang, Shengwei,&Lu, Naimeng.(2018).Precipitation Retrieval Using 118.75-GHz and 183.31-GHz Channels From MWHTS on FY-3C Satellite.IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing.
MLA Li, Na,et al."Precipitation Retrieval Using 118.75-GHz and 183.31-GHz Channels From MWHTS on FY-3C Satellite".IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (2018).
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