Evaluation of Version-7 TRMM Multi-Satellite Precipitation Analysis Product during the Beijing Extreme Heavy Rainfall Event of 21 July 2012
Evaluation of Version-7 TRMM Multi-Satellite Precipitation Analysis Product during the Beijing Extreme Heavy Rainfall Event of 21 July 2012
复制标题
2012年7月21日北京特大暴雨事件中TRMM第七版多星降水分析产品评价
DOI：
10.3390/w6010032
复制
发表时间：
2013-12
期刊：
影响因子：
3.4
通讯作者：
Yong Huang , Sheng Chen, Qing Cao
中科院分区：
文献类型：
--
作者：
Yong Huang , Sheng Chen, Qing Cao
美国国家航空航天局（NASA）于2012年12月发布了最新版本7（V7）热带降雨测量使命（TRMM）多卫星降水分析（TMPA）产品。它们在不同的气候、位置和降水类型上的表现对基于卫星的降水社区非常感兴趣。利用TMPA降水产品（3B42RT和3B42V7）对2012年7月21日00：00 UTC至2012年7月22日00：00 UTC期间北京及其邻近地区的一次极端降水事件进行了研究。密集的雨量计网络的测量结果被用作地面实况，以评估最新的TMPA产品。结果总结如下。与雨量计观测结果相比，3B42RT和3B42V7都能较好地反映降水的时空分布，在河北、北京和天津（HBT）地区具有中等的空间相关系数（CC，0.6）和较高的CC值（0.88），但降水峰值比雨量计观测值提前6 h。总体而言，3B42RT在HBT和北京的估计值均高于3B42V7。在风暴中心，3B42RT和3B42V7对降水的时间变化有较大的偏离，分别低估了29.02%和36.07%。目前的研究表明，最新的TMPA产品在分辨率和精度方面仍然存在局限性，特别是对于TRMM降水雷达和微波成像仪覆盖范围边缘的纬度区域内的这类极端事件。因此，TMPA用户应谨慎使用3B42RT和3B42V7模型，监测和预测洪水灾害在北京市区和滑坡在北京西部和北部山区。
The latest Version-7 (V7) Tropical Rainfall Measuring Mission (TRMM) Multi-satellite Precipitation Analysis (TMPA) products were released by the National Aeronautics and Space Administration (NASA) in December of 2012. Their performance on different climatology, locations, and precipitation types is of great interest to the satellite-based precipitation community. This paper presents a study of TMPA precipitation products (3B42RT and 3B42V7) for an extreme precipitation event in Beijing and its adjacent regions (from 00:00 UTC 21 July 2012 to 00:00 UTC 22 July 2012). Measurements from a dense rain gauge network were used as the ground truth to evaluate the latest TMPA products. Results are summarized as follows. Compared to rain gauge measurements, both 3B42RT and 3B42V7 generally captured the rainfall spatial and temporal pattern, having a moderate spatial correlation coefficient (CC, 0.6) and high CC values (0.88) over the broader Hebei, Beijing and Tianjin (HBT) regions, but the rainfall peak is 6 h ahead of gauge observations. Overall, 3B42RT showed higher estimation than 3B42V7 over both HBT and Beijing. At the storm center, both 3B42RT and 3B42V7 presented a relatively large deviation from the temporal variation of rainfall and underestimated the storm by 29.02% and 36.07%, respectively. The current study suggests that the latest TMPA products still have limitations in terms of resolution and accuracy, especially for this type of extreme event within a latitude area on the edge of coverage of TRMM precipitation radar and microwave imager. Therefore, TMPA users should be cautious when 3B42RT and 3B42V7 are used to model, monitor, and forecast both flooding hazards in the Beijing urban area and landslides in the mountainous west and north of Beijing.
登录
查看更多内容
DOI：
10.1175/jam2173.1
发表时间：
2004-12-01
期刊：
JOURNAL OF APPLIED METEOROLOGY
影响因子：
--
作者：
Hong, Y;Hsu, KL;Gao, XG
通讯作者：
Gao, XG
影响因子：
3.8
作者：
Daqing Yang;B. Ye;A. Shiklomanov
通讯作者：
Daqing Yang;B. Ye;A. Shiklomanov
影响因子：
2.2
作者：
S. Sokolov;S. Rintoul
通讯作者：
S. Sokolov;S. Rintoul
影响因子：
3.1
作者：
Wei‐Chyung Wang;J. Pinto;Y. Yung
通讯作者：
Wei‐Chyung Wang;J. Pinto;Y. Yung
DOI：
10.1007/978-3-540-77655-0_6
发表时间：
2008
期刊：
--
影响因子：
--
作者：
A. Hou;G. Skofronick-Jackson;C. Kummerow;James Marshall Shepherd
通讯作者：
A. Hou;G. Skofronick-Jackson;C. Kummerow;James Marshall Shepherd