TMPA-RT data image of rainfall in the Houston, Texas region July 10-15, 2012. See article for longer explanatory caption.
The NASA Goddard Earth Sciences Data and Information Services Center (GES DISC) announces the availability of newly released Version 7 Near-real-time Tropical Rainfall Measuring Mission (TRMM) Multi-satellite Precipitation Analysis (TMPA-RT) data products with quasi-global (50° S - 50° N) coverage. The new data products are found in Giovanni TOVAS (TRMM Online Visualization and Analysis System). TMPA-RT data products are created by the NASA Goddard Space Flight Center Laboratory for Atmospheres. The lead algorithm developer is Dr. George Huffman.
There are four TMPA-RT products in Giovanni TOVAS:
- Combined 3-hourly high-quality (HQ) & variable rain rate (VAR) product (3B42RT)
- HQ product (3B40RT)
- VAR product (3B41RT)
- 3B42RT derived daily product
The spatial resolution for all four products is 0.25° x 0.25°. The new release includes the following major changes:
- Inclusion of Special Sensor Microwave Imager/Sounder (SSMIS) data.
- Retrospective processing of the RT system during July 2012, which will make RT data products available back to March 1, 2000.
- Availability of earlier versions of TMPA-RT data products (V5 and V6).
The Version 7 TMPA-RT products can be accessed directly through Giovanni TOVAS using the links listed below:
Note: For research, use the TMPA 3-hourly product (3B42), which can be accessed with the GES DISC Mirador system (http://mirador.gsfc.nasa.gov) and which can also be viewed with Giovanni TOVAS.
Figure 1. This example of the new Version 7 TMPA-RT data product shows a rainfall accumulation map in the Houston region (arrow) between July 10 – 15, 2012, generated with Giovanni TOVAS. According to news reports, nearly 14 inches of rain fell in some local areas, causing flooding of numerous homes due to water quickly rising above stream banks. This heavy rain event helped alleviate some water shortages due to the persistent drought in the region. (Click image to view it full-size.)
Author: Zhong Liu. Editing by Bill Teng, editing and Web formatting by James Acker.
The GES DISC is a NASA earth science data center, part of the NASA Earth Science Data and Information System (ESDIS) Project.