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DOI | 10.1029/2019GL083426 |
Time-Lag Correlation Between Passive Microwave Measurements and Surface Precipitation and Its Impact on Precipitation Retrieval Evaluation | |
You, Yalei1; Meng, Huan2; Dong, Jun1; Rudlosky, Scott2 | |
2019-07-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
卷号 | 46期号:14页码:8415-8423 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study investigates the correlation between the upwelling microwave brightness temperature measured by satellite radiometer and surface precipitation rate from ground radar observations at different time lags. Results show that brightness temperatures correlate more strongly with the lagged surface precipitation rate than the simultaneous surface precipitation rate. The lag time for snowfall ranges from 30 to 60min. This time lag effect has an important influence when evaluating the satellite retrieval results relative to ground observations. For example, the falsely identified pixels can decrease by as much as 23.88% when considering a 30-min lag time. Furthermore, the satellite-retrieved snowfall rate shows much stronger correlation with the time-lagged surface snowfall rate than the simultaneous snowfall rate in cold environments and for tall storms. This work implies that the time of the level-2 swath-retrieved snowfall rate needs to shift forward when incorporated into the level-3 gridded products. |
英文关键词 | satellite snowfall retrieval time lag correlation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000481818900060 |
WOS关键词 | SATELLITE ; ALGORITHM ; RADAR ; WATER |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/185323 |
专题 | 气候变化 |
作者单位 | 1.Univ Maryland, Earth Syst Sci Interdisciplinary Ctr, Cooperat Inst Climate & Satellites, College Pk, MD 20742 USA; 2.NOAA, Natl Environm Satellite Data & Informat Serv, College Pk, MD USA |
推荐引用方式 GB/T 7714 | You, Yalei,Meng, Huan,Dong, Jun,et al. Time-Lag Correlation Between Passive Microwave Measurements and Surface Precipitation and Its Impact on Precipitation Retrieval Evaluation[J]. GEOPHYSICAL RESEARCH LETTERS,2019,46(14):8415-8423. |
APA | You, Yalei,Meng, Huan,Dong, Jun,&Rudlosky, Scott.(2019).Time-Lag Correlation Between Passive Microwave Measurements and Surface Precipitation and Its Impact on Precipitation Retrieval Evaluation.GEOPHYSICAL RESEARCH LETTERS,46(14),8415-8423. |
MLA | You, Yalei,et al."Time-Lag Correlation Between Passive Microwave Measurements and Surface Precipitation and Its Impact on Precipitation Retrieval Evaluation".GEOPHYSICAL RESEARCH LETTERS 46.14(2019):8415-8423. |
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