NOAA GOES Image Viewer website
21 Jan 2021 - 03:09 EST
21 Jan 2021 - 08:09 UTC

GOES-West - Sector view: Alaska - Nighttime Microphysics*

2 hour loop - 12 images - 10 minute update

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Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0600 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0600 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0610 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0610 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0620 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0620 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0630 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0630 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0640 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0640 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0650 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0650 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0700 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0700 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0710 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0710 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0720 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0720 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0730 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0730 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0740 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0740 UTC Latitude / Longitude grid
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0750 UTC
Nighttime Microphysics - RGB used to distinguish clouds from fog - 21 Jan 2021 - 0750 UTC Latitude / Longitude grid
 

About Nighttime Microphysics

Nighttime Microphysics RGB The distinction between low clouds and fog in satellite imagery is challenging. While the difference between the 10.4 and 3.9 μm channels has been a regularly applied product to meet aviation forecast needs, the Nighttime Microphysics (NtMicro) RGB adds another channel difference (12.4- 10.4 μm) as a proxy to cloud thickness and repeats the use of the 10.4 μm thermal channel to enhance areas of warm (i.e. low) clouds where fog is more likely. The NtMicro RGB is also an efficient tool to quickly identify other cloud types in the mid and upper atmosphere.

• For more details, see the Nighttime Microphysics RGB Quick Guide, (PDF, 1.41 MB)

*GOES-17 Infrared Image Quality

During post-launch testing of the GOES-17 ABI instrument, an issue with the instrument's cooling system was discovered. The loop heat pipe (LHP) subsystem, which transfers heat from the ABI electronics to the radiator, is not operating at its designed capacity. The consequence of this is that the ABI detectors cannot be maintained at their intended temperatures under certain orbital conditions. This is preventing adequate cooling for some of the infrared (IR) channels on the instrument during parts of the night, leading to partial loss of ABI imagery. Learn more.

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