T-29: 20 Years of Precipitation from Space

For two decades, NASA has had a global view of precipitation from space. Using measurements from the Tropical Rainfall Measuring Mission and the Global Precipitation Measurement mission – a joint effort with the Japan Aerospace Exploration Agency (JAXA) – a computer model creates a four-dimensional view of rain, snow, sleet and storms.

This computer algorithm creates a view of global precipitation every half-hour, which is useful for time-sensitive work like weather forecasting and disaster recovery. It’s also used for water resource management.

NASA logo with the blue circle replaced with EarthIt’s not just for the short term, however. Having a long record of precipitation allows scientists to see patterns. We can track how precipitation changes across seasons and how a changing climate affects precipitation – giving us a baseline to understand extreme weather in the future.