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
A second pair of SAR observations occurred on 23 February, one at 0544 UTC (above) and one at 1647 UTC (below). The character of the two scenes is quite different. The 0544 UTC wind imagery and NRCS imagery (from this site) shows a mostly quiescent scene with widespread northeasterly winds. One arc of winds... 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
Sentinel-1A SAR data just before sunrise captured a very narrow region of enhanced winds just south of the Rio Grande delta on 18 February 2023, as shown above in a toggle with the 1226 UTC GOES-16 Band 13 Clean Window infrared (10.3 µm) imagery. There appears to be no obvious... Read More
