JMA Himawari-9 Infrared Window (10.4 µm) images of Tropical Cyclone Judy in the South Pacific Ocean on 27 February 2023 (above) displayed some unusually cold cloud-top infrared brightness temperatures — with isolated vales of -100ºC and colder (red pixels embedded within interior darker black regions).The Central Cold Cover feature was... Read More

What products are available in the Arctic in between SAR observations? Consider the composite image above, showing RADARSAT-2 SAR ice concentration at 0453 UTC on 22 February 2023 over/around Saint Matthew Island (direct link to footprint here at the STAR SAR Wind site*) and an RADARSAT Constellation Mission-3 (RCM3) image at at 0546 UTC on 22... Read More

Sentinel-1A overflew the Hawai’ian islands twice, once on 26 February and again on 27 February. The animation above shows the AWIPS presentation of SAR winds at 1616 UTC on 26 February. Images from the NOAA/STAR website for those two footprints are shown below as toggles between the derived wind speed and the... Read More