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California Atmospheric River Storms Captured by NASA's AIRS

Jan. 10, 2023
The AIRS instrument aboard NASA's Aqua satellite captured a series of storms as they dumped record amounts of rain in some parts of California, causing flooding, and damaging infrastructure.

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Since the start of 2023 California has been drenched by a series of storms being transported by an atmospheric river – a relatively narrow, windy region in Earth's atmosphere that can transport moisture or tiny particles for thousands of miles, much like a river on land moves water. NASA's Atmospheric Infrared Sounder (AIRS) captured the series of storms as they dumped record amounts of rain in some parts of California, caused flooding, and damaged infrastructure. Forecasts say this pattern of storms will continue through the week of Jan. 9.

The images show cloud temperatures taken at infrared wavelengths not visible to the human eye. Purple and violet areas are colder, between about minus 82 degrees Fahrenheit and minus 46 degrees Fahrenheit (minus 63 degrees Celsius to minus 44 degrees Celsius), than blue and green regions which are roughly minus 28 degrees Fahrenheit to 26 degrees Fahrenheit (minus 33 degrees Celsius to minus 3 degrees Celsius). Warmer red sections are between roughly 62 degrees Fahrenheit and 80 degrees Fahrenheit (17 degrees Celsius to 27 degrees Celsius), representing mostly cloud-free air. The cooler parts of the clouds are associated with very heavy rainfall. White patches represent gaps in satellite coverage.

Located aboard the Aqua satellite AIRS, in conjunction with the Advanced Microwave Sounding Unit (AMSU), senses emitted infrared and microwave radiation from Earth to provide a 3D look at the planet's weather and climate. Working in tandem, the two instruments make simultaneous observations down to Earth's surface. With more than 2,000 channels sensing different regions of the atmosphere, the system creates a global, 3D map of atmospheric temperature and humidity, cloud amounts and heights, greenhouse gas concentrations, and many other atmospheric phenomena. Launched into Earth orbit in 2002 aboard NASA's Aqua spacecraft, the AIRS and AMSU instruments are managed by NASA's Jet Propulsion Laboratory in Southern California, under contract to NASA. JPL is a division of Caltech.

More information about AIRS can be found at https://airs.jpl.nasa.gov.

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Mission
Target
  • Earth
Spacecraft
  • Aqua
Instrument
  • Atmospheric Infrared Sounder (AIRS)
Credit
NASA/JPL-Caltech

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