As of April 1st, 2020, the official URL for accessing this website will change to https://gpm.nasa.gov/education. The legacy URL at https://pmm.nasa.gov/education will only continue to work for a limited time. Please update your records accordingly.

Browse radar Resources

Browse radar Resources

Size Matters: NASA Measures Raindrop Sizes From Space to Understand Storms
Primary Topic: 
Type: 
Audience: 
Standards: 
Summary: 
This video explains why the size and shape of raindrops in a cloud matters to scientists, and how the Global Precipitation Measurement Mission is able to provide these measurements from space.
Ground Validation and OLYMPEX Webquest – Elementary Version
Primary Topic: 
Audience: 
Standards: 
Summary: 
You will learn how we measure rain and snow from the ground and from space using satellites, and why we need to check the data using ground validation. This particularly relates to the OLYMPEX Field Campaign.
Primary Topic: 
Audience: 
Standards: 
Summary: 
You will learn how we measure precipitation from the ground and from space using satellites, and why we need to do ground validation of the satellite data. You will also learn about the OLYMPEX Field Campaign.
Diagram which illustrates active and passive remote sensing
Primary Topic: 
Type: 
Audience: 
Summary: 
This diagram illustrates the differences between active and passive remote sensing.  TRMM and GPM rely on active and passive instruments to measure the properties of precipitation from space.
A NASA engineer removing the DPR from its shipping container
Primary Topic: 
Type: 
Audience: 
Standards: 
Summary: 
Engineers from the Japan Aerospace Exploration Agency (JAXA) and NASA Goddard Space Flight Center in Greenbelt, Md. oversee the arrival and unpacking of the dual-frequency Precipitation Radar.