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Tropical Cyclone Rainfall Estimates from FY-3B MWRI Brightness Temperatures Using the WS Algorithm
Zhang, Ruanyu1,2; Wang, Zhenzhan1; Hilburn, Kyle A.3
作者部门微波遥感部
发表期刊REMOTE SENSING
2018
卷号10期号:11页码:1770
DOI10.3390/rs10111770
ISSN2072-4292
语种英语
关键词tropical cyclone rain rate precipitation remote sensing radiometer retrieval algorithm
摘要A rainfall retrieval algorithm for tropical cyclones (TCs) using 18.7 and 36.5 GHz of vertically and horizontally polarized brightness temperatures (Tbs) from the Microwave Radiation Imager (MWRI) is presented. The beamfilling effect is corrected based on ratios of the retrieved liquid water absorption and theoretical Mie absorption coefficients at 18.7 and 36.5 GHz. To assess the performance of this algorithm, MWRI measurements are matched with the National Snow and Ice Data Center (NSIDC) precipitation for six TCs. The comparison between MWRI and NSIDC rain rates is relatively encouraging, with a mean bias of -0.14 mm/h and an overall root-mean-square error (RMSE) of 1.99 mm/h. A comparison of pixel-to-pixel retrievals shows that MWRI retrievals are constrained to reasonable levels for most rain categories, with a minimum error of -1.1% in the 10-15 mm/h category; however, with maximum errors around -22% at the lowest (0-0.5 mm/h) and highest rain rates (25-30 mm/h). Additionally, Advanced Microwave Scanning Radiometer for Earth Observing System (AMSR-E) Tbs are applied to retrieve rain rates to assess the sensitivity of this algorithm, with a mean bias and RMSE of 0.90 mm/h and 3.11 mm/h, respectively. For the case study of TC Maon (2011), MWRI retrievals underestimate rain rates over 6 mm/h and overestimate rain rates below 6 mm/h compared with Precipitation Radar (PR) observations on storm scales. The Tropical Rainfall Measuring Mission (TRMM) Microwave Imager (TMI) rainfall data provided by the Remote Sensing Systems (RSS) are applied to assess the representation of mesoscale structures in intense TCs, and they show good consistency with MWRI retrievals.
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/122/6612
专题微波遥感部
作者单位1.Key Laboratory of Microwave Remote Sensing, National Space Science Center, Chinese Academy of Sciences, Beijing; 100190, China;
2.University of Chinese Academy of Sciences, Beijing; 100049, China;
3.Cooperative Institute for Research in the Atmosphere, Colorado State University, Fort Collins; CO; 80523, United States
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Zhang, Ruanyu,Wang, Zhenzhan,Hilburn, Kyle A.. Tropical Cyclone Rainfall Estimates from FY-3B MWRI Brightness Temperatures Using the WS Algorithm[J]. REMOTE SENSING,2018,10(11):1770.
APA Zhang, Ruanyu,Wang, Zhenzhan,&Hilburn, Kyle A..(2018).Tropical Cyclone Rainfall Estimates from FY-3B MWRI Brightness Temperatures Using the WS Algorithm.REMOTE SENSING,10(11),1770.
MLA Zhang, Ruanyu,et al."Tropical Cyclone Rainfall Estimates from FY-3B MWRI Brightness Temperatures Using the WS Algorithm".REMOTE SENSING 10.11(2018):1770.
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