Tropical Rainfall Measuring Mission (TRMM)
Tropical Rainfall Measuring Mission (TRMM) was a joint mission between NASA and the Japan Aerospace Exploration Agency (JAXA) designed to monitor and study tropical rainfall. TRMM was launched in 1997 and operated until 2015. The mission's primary instrument was the Precipitation Radar (PR), which used radar pulses to measure the intensity and distribution of rainfall. TRMM also carried a suite of other instruments, including a microwave imager, a visible and infrared scanner, and a lightning sensor. The data collected by TRMM has been used to improve weather forecasting, study the global water cycle, and understand the impact of climate change on tropical regions.
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