Thousands if not millions of people took colorful photos of the Northern Lights during the early hours of May 11th during a remarkable G5 geomagnetic storm that expanded Aurora Borealis activity southward to unusually low latitudes in the United States. The JPSS fleet of polar-orbiting spacecraft captured eight monochromatic VIIRS... Read More
The long-anticipated arrival of NOAA-21 NUCAPS profiles (to supplement NOAA-20!) to AWIPS means that data void regions such as the South Pacific Ocean now have complete twice-daily coverage, as shown by the inidividual profiles above, and the overlapping profiles below. This means that a twice-daily mappings of accurate satellite sounder-provided... Read More
NUCAPS profiles from NOAA-21 are now flowing into AWIPS, joining NUCAPS from NOAA-20 and Metop-C. NOAA-21 and NOAA-20 orbits are similar, and the combination of the two satellites means complete coverage twice daily. That is demonstrated in the animation above over Hawai’i that shows gridded NUCAPS fields of 500-mb temperatures... Read More
A sequence of Suomi-NPP VIIRS Visible (0.64) images (above) displayed the cyclonically-curved cloud structure associated with an Arctic low pressure system (surface analyses) located between Alaska and the North Pole on 14 April 2024. A blend of Atmospheric Motion Vectors derived from NOAA-20 and NOAA-21 (below) showed the flow pattern at... Read More
