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
Indian Ocean Cyclone Freddy had an unusually long track and lifespan as it crossed the southern Indian Ocean. The animation above (created using geo2grid software) shows hourly Himawari-9 Clean Window infrared (10.4 µm) imagery from 5 February through 19 February, when Freddy could no longer be viewed by that geostationary... Read More
US Space Force EWS-G1 (formerly GOES-13) Infrared Window (10.7 µm) images (above) showed Category 3 Cyclone Freddy making landfall along the east coast of Madagascar on 21 February 2023.According to products from the CIMSS Tropical Cyclones site, during the 12-15 hours leading up to landfall Freddy was traversing warm water with Sea Surface Temperature... Read More
SAR data collection over Cyclone Freddy in the Indian Ocean has led to a remarkable collection of imagery. To date, more than twenty eye overpasses have occurred from RADARSAT-2 (3 overpasses), Sentinel 1A (1 overpass) and the three satellites of the RADARSAT Constellation Mission (17(!) overpasses). The animation above shows... Read More
