Evaluation of Version-7 TRMM Multi-Satellite Precipitation Analysis Product during the Beijing Extreme Heavy Rainfall Event of 21 July 2012
Open Access
- 27 December 2013
- Vol. 6 (1), 32-44
- https://doi.org/10.3390/w6010032
Abstract
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.Keywords
This publication has 32 references indexed in Scilit:
- Performance evaluation of radar and satellite rainfalls for Typhoon Morakot over Taiwan: Are remote-sensing products ready for gauge denial scenario of extreme events?Journal of Hydrology, 2013
- The Beijing extreme rainfall of 21 July 2012: “Right results” but for wrong reasonsGeophysical Research Letters, 2013
- Beijing storm of July 21, 2012: observations and reflectionsNatural Hazards, 2013
- High-Resolution Modeling of Typhoon Morakot (2009): Vortex Rossby Waves and Their Role in Extreme Precipitation over TaiwanJournal of the Atmospheric Sciences, 2013
- What factors are responsible for the Beijing storm?Natural Hazards, 2012
- The Impacts of Taiwan Topography on the Predictability of Typhoon Morakot’s Record-Breaking Rainfall: A High-Resolution Ensemble SimulationWeather and Forecasting, 2011
- Were the 2010 Pakistan floods predictable?Geophysical Research Letters, 2011
- Precipitation Estimation from Remotely Sensed Imagery Using an Artificial Neural Network Cloud Classification SystemJournal of Applied Meteorology and Climatology, 2004
- CMORPH: A Method that Produces Global Precipitation Estimates from Passive Microwave and Infrared Data at High Spatial and Temporal ResolutionJournal of Hydrometeorology, 2004
- Evaluation of PERSIANN System Satellite–Based Estimates of Tropical RainfallBulletin of the American Meteorological Society, 2000