TRMM was a research satellite in operation from 1997 to 2015, designed to improve our understanding of the distribution and variability of precipitation within the tropics as part of the water cycle in the current climate system.

A new data product merges data from the Tropical Rainfall Measuring Mission (TRMM) and the Global Precipitation Measurement (GPM) mission, giving meteorologists and researchers access to a 20-year precipitation record.

Nov 27, 1997 · The satellite uses several instruments to detect rainfall including radar, microwave imaging, and lightning sensors. Flying at a low orbital altitude of 240 miles (400 kilometers) TRMM's data collection of tropical precipitation helps …

Now, 17 years later, the TRMM mission has come to an end. NASA and the Japan Aerospace Exploration Agency (JAXA) stopped TRMM’s science operations and data collection on April 8 after the spacecraft depleted its fuel reserves.

This page provides a directory of download links, documentation, and other details about data products produced by NASA's Global Precipitation Measurement Mission (GPM) and Tropical Rainfall Measuring Mission (TRMM).

Feb 24, 2009 · Use of TRMM Precipitation Radar to address the problem of rain detection over the oceans in passive microwave measurements

The Tropical Rainfall Measuring Mission’s (TRMM) Microwave Imager (TMI) is a passive microwave sensor designed to provide quantitative rainfall information over a wide swath under the TRMM satellite.

NASA’s Precipitation Measurement Missions consist of TRMM and GPM. The Global Precipitation Measurement Mission (GPM) is an international satellite mission launched by NASA and JAXA on Feb. 27th, 2014 that is setting new standards for precipitation measurements worldwide.

Using a network of satellites united by the GPM Core Observatory, GPM expands on the legacy of the Tropical Rainfall Measuring Mission (TRMM) by providing high quality estimates of Earth’s rain and snowfall every 30 minutes.

The Tropical Rainfall Measuring Mission (TRMM), launched by NASA and JAXA in 1997, used both active and passive microwave instruments to measure rainfall in the tropics. It also provided a foundation for merging rainfall information from other satellites.