Cross-track Infrared Sounder
Enabling More Precision in Storm Event Prediction
The accuracy of CrIS soundings has enabled weather forecasters to more accurately predict the path and severity of weather events like tornadoes and snowstorms days in advance of their impact. The sounders’ infrared sensors provide high-resolution data that assists in understanding El Niño and other major climate shifts.
Sounders work by measuring the infrared energy emitted by an atmospheric column from the ground up through the clouds. Before the Harris-built CrIS became operational, sounders provided 19 “slices” of the column. CrIS captures more than 1,000 slices, vastly improving weather forecast models with more detailed information about moisture, temperature, and pressure.
Capitalizing on the success of Suomi NPP mission, CrIS instruments will fly aboard NOAA’s next-generation Joint Polar Satellite System, or JPSS:
- JPSS-1 spacecraft, scheduled to launch in 2017
- JPSS-2 spacecraft, scheduled to launch in 2021