SAR data are being acquired over American Samoa for the next several weeks. SAR data from a Sentinel-1A overpass at 0553 UTC on 31 January, shown above (from this website), shows mostly light winds, mostly less than 10 m/s. The Normalized Radar Cross Section (NRCS) data can be used to view any ice contamination in the wind speed image.... Read More

GOES-16 (GOES-East) “Red” Visible (0.64 µm) images which include plots of GOES-16 Derived Motion Winds within the Suface-900 hPa layer (above) showed the eastward transport of several ice floes from the northern portion of Green Bay into Lake Michigan on 30 January 2023. Surface wind gusts and Derived Motion Wind speeds were generally in the... Read More

The 10th and final special RADARSAT-2 data collection of SAR winds over the Guam Area of Responsibility (AOR) occurred on 24 November, and is shown above in a toggle with the Himawari-8 Clean Window imagery at the same time (Here is the same toggle as above but with SAR data... Read More

RADARSAT-2 observations of SAR data near/around the island of Guam in the Marianas Islands continue in November (as previously discussed here, here and here). Overpasses on 15 November (above) and 17 November (below) contain features that deserve comment. For example, there is an obvious seam (and a less-obvious second seam)... Read More