TRMM Out Of Fuel, Continues to Provide Data

TRMM Out Of Fuel, Continues to Provide Data

Pressure readings from the Tropical Rainfall Measuring Mission's (TRMM) fuel tank on July 8 indicated that the satellite was nearly at the end of its fuel supply. As a result, NASA has ceased maneuvers to keep the satellite at its operating altitude of 402 kilometers (~250 miles). With its speed decreasing, TRMM has begun to drift downward. A small amount of fuel remains to conduct debris avoidance maneuvers to ensure the satellite remains safe.

JAXA Launches GCOM-W1 Satellite

Congratulations to our partner, the Japan Aerospace Exploration Agency (JAXA), for the successful launch yesterday of the Global Change Observation Mission 1st - Water (GCOM-W1). GCOM-W1 carries the Advanced Microwave Scanning Radiometer 2 (AMSR2) which successfully deployed its antenna on orbit. AMSR2 will detect microwave radiation to measure sea surface temperature, sea surface wind speed, sea ice concentration, snow depth, soil moisture, water vapor, cloud liquid water, and precipitation.

TRMM Mission Overview

Image of the TRMM Satellite in Space

One of the great challenges facing mankind in the 21st century is the threat of global climate change due to increased levels of carbon dioxide and other greenhouse gasses in the atmosphere. Is the threat real? Computer models that predict the future climate still differ in some very substantial ways with some models predicting little or no warming, while others predict temperature increases that would substantially alter our way of life.

GPM Core Observatory

Diagram of the GPM Core Observatory shoing the GMI and DPR instruments
Diagram of the GPM core observatory showing the GMI and DPR instruments.
Diagram of the GPM Core Observatory

Carrying both a dual frequency radar instrument and a passive microwave radiometer, the Core Spacecraft serves as a calibration standard for the other members of the GPM spacecraft constellation.


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