Gridded NUCAPS fields include a wide range of thermodynamic variables. The plot above shows the 900-mb temperature field. Is it possible to use this data to diagnose a rain/snow transition line? Over southern New England, the relationship between 900-mb temperatures and surface precipitation observations seems robust: snow is restricted to... Read More
GOES-16 (GOES-East) Air Mass RGB images (above) displayed the characteristic pale yellow hues associated with cold arctic air that was moving southward behind a deep area of low pressure centered over Hudson Bay and northern Quebec, Canada on 12 February 2020.A sequence of GOES-16 “Red” Visible (0.64 µm), Near-Infrared “Snow/Ice” (1.61 µm) and Day Snow-Fog RGB images (below)... Read More
Gridded NOAA-Unique Combined Atmospheric Processing System fields in AWIPS (and elsewhere, such as this excellent site) include retrieved values of ozone (O3), an important gas. In high concentrations in the upper troposphere, O3 is a marker for the presence of stratospheric air. In the animation above, high concentrations of ozone are present... Read More
2.5-minute rapid scan JMA Himawari-8 “Clean” Infrared Window (10.4 µm) images (above) showed Cyclone Damien making landfall as a Category 2 storm in Western Australia on 08 February 2020. Well west of the storm center, winds gusted to 49 knots at Barrow Island (YBWX). The eye remained intact for several hours... Read More
