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TRMM Online Visualization and Analysis System (TOVAS)

The TRMM Online Visualization and Analysis System (TOVAS) is based primarily on data from the Tropical Rainfall Measuring Mission (TRMM).TOVAS has been operational since March 2001, providing users with access to the following data sets:

  1. Three-hourly TRMM and Other Satellite Rainfall (3B42RT) for Jan 2002-present
  2. TRMM Level-3 Daily Rainfall (3B42) for Jan 1998-present
  3. TRMM Level-3 Monthly Rainfall (3B43) for Jan 1998-present
  4. Willmott and Matsuura Global Precipitation for Jan 1950-Dec 1999
  5. Global Precipitation Climatology Center (GPCC) Monthly Global Precipitation for Jan 1986-present

TOVAS is a powerful tool that allows users to easily and fully explore the data (area plot, time plot, Hovmoller plot, image animation, color options, and ASCII output).TOVAS makes TRMM and other gridded precipitation data available in a format that anyone can learn to use within minutes, and puts them to work productively for research or applications. With a few mouse clicks, one can easily obtain precipitation information from around the world. Try it!    TRMM Online Visualization and Analysis System

Recent applications of TOVAS include the following:

  • Coastal urban heat island effect on rainfall
  • Additional rainfall information to supplement ground stations in Sri Lanka
  • Phenology study in Africa and North America
  • Crop yield estimates and flood watch in Africa and Asia
  • Rainfall information for a development project in Afghanistan
  • Fire monitoring activitites in Africa
  • Data for hydrological modeling in Africa
  • Range prediction of American butterflies
  • Intercomparison with other products in North America
  • Monitoring rain events in the Balkans
  • Investigation of the 1997-1998 El Niño and La Niña event
  • Investigation of insect activities in the United States

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Last updated: Jun 15, 2012 10:09 AM ET