GOE S-16 “Red” Visible (0.64 µm) images, with time-matched SPC Storm Reports plotted in red [click to play animated GIF | MP4]
Overlapping 1-minute GOES-16
(GOES-East) Mesoscale Domain Sectors provided 30-second “Red” Visible (
0.64 µm) images
(above), which included time-matched plots of
SPC Storm Reports — showing clusters of thunderstorms that moved eastward across parts of Illinois, Indiana and Lower Michigan on
03 August 2022.
The corresponding 30-second GOES-16 “Clean” Infrared Window (10.35 µm) images (below) indicated that the coldest overshooting tops exhibited infrared brightness temperatures around -80ºC (violet pixels within areas of brighter white enhancement).
GOES-16 “Clean” Infrared Window (10.35 µm) images, with time-matched SPC Storm Reports plotted in cyan [click to play animated GIF | MP4]
In a toggle between NOAA-20
VIIRS Infrared (11.45 µm) and GOES-16
ABI “Clean” Infrared Window (10.35 µm) images valid at 1924 UTC
(below), the northwestward shift in GOES-16 image cloud-top features was associated with
parallax (which in this case was a distance around
18-19km for the maximum
Cloud Top Heights of
50,000-52,000 feet). The coldest NOAA-20 cloud-top infrared brightness temperatures at that time were around -84ºC (over far southern Lake Michigan), compared to around -77ºC with GOES-16 (identical color enhancements were applied to both images).
NOAA-20 Infrared Window (11.45 µm) and GOES-16 “Clean” Infrared Window (10.35 µm) images valid at 1924 UTC [click to enlarge]
However, in a toggle between NOAA-20 Infrared Window (11.45 µm) and GOES-16
Cloud Top Temperature (CTT) derived product images valid at 1924 UTC
(below), the coldest sensed cloud-top temperature values over far southern Lake Michigan were closer (-84ºC with NOAA-20, vs -80ºC with the GOES-16 CTT product).
NOAA-20 Infrared Window (11.45 µm) and GOES-16 Cloud Top Temperature derived product images valid at 1924 UTC [click to enlarge]
