Sentinel-1A overflew the Hawai’ian islands shortly before sunrise on 15 March and the derived winds from this descending pass are shown above (they are also available here, through this website). Southwesterly flow and the topography of Oahu has excited gravity waves that are observable downstream from the island in the SAR... Read More

The special SAR observation period over American Samoa, allowing extra observations from RADARSAT and RCM satellites (see CIMSS Blog posts here, here, here, here, here, here, here and here!) has ended, but Sentinel-1A will still routinely send back SAR observations over the Samoan Island chain. The pass above show GOES-18... Read More

RADARSAT-2 overflew the Samoan Islands shortly after sunset on 4 March 2023, as shown above. The NRCS and derived wind fields show light winds over the entire region. The toggle below show Metop-B and Metop-C ASCAT winds between 0800 and 1000 UTC on 5 March. Those instruments also detect light winds.MIMIC Total Precipitable water fields, below,... Read More

The Synthetic Aperture Radar instrument on RADARSAT Constellation Mission-2 (RCM-2) satellite sampled the winds over the western half of Cyclone Judy at 0700 UTC on 2 March 2023, as shown in the toggle above that also includes the GOES-18 Band 13 Clean Window infrared (10.3 µm) imagery. Peak winds are 41 m/s in the southern eyewall, and strongest winds are in general in the southern part... Read More