Introduction to the GOES I-M Imager Channels with Emphasis on the 3.9 µm Channel

Presented by
Jack Dostalek
Cooperative Institute for Research in the Atmosphere
Regional and Mesoscale Meteorology Team



Outline GOES I-M System Picture of Satellite SRSO Sectors GOES Imager Channels Visible interactions with earth-atmosphere Remarks on the Visible Channel Spectral Response for GOES-8,-9,-10 Visible Channel Infrared interactions with earth-atmosphere Infrared Spectrum Infrared Spectral Response Functions Infrared Weighting Functions Remarks on the Water Vapor Channel Pressure and winds on 320K isentropic surface overlaid on water vapor image Water Vapor Shades not equivalent to total column water vapor Remarks on the Longwave infrared and split window channels Dryline of 4/19/95 Volcano Eruption in Ch4 and Ch5 Combined Image Volcano Eruption in Visible Channel Remarks on the Shortwave Infrared Window 3.9 µm Tutorial Outline of 3.9 µm Channel Presentation Noise at 10.7 and 3.9 µm Sun and Earth as Energy Sources 3.9 µm single scattering albedo for ice and water particles 3.9 and 10.7 µm Temperature Responsivity Biomass Burning at 3.9 and 10.7 µm Cloud fraction at 3.9 and 10.7 µm Pseudo-derivation of Reflectivity Product Volcano Eruption in the Reflectivity Product Emissivity of Various Substances Reflectivity Product - Liquid Water Clouds/Fog Reflectivity Product - Ice Clouds (Thick) Reflectivity Product - Ice Clouds (Thin) Reflectivity Product - Snow Cover Reflectivity Product - Liquid Water (No sun glint) Reflectivity Product - Liquid Water (Sun glint) Reflectivity Product - Fire/Smoldering Ground Fog Product - Liquid Water Cloud/Fog Fog Product - Ice Clouds (Thick) Fog Product - Ice Clouds (Thin) Fog Product - Liquid Water Fog Product - Fire/Smoldering Ground

LOOPS

Hurricane Luis
31 May 1996 30 Second Imagery
6.7 µm Imagery of a Shortwave
10.7 µm Imagery of a Shortwave
6.7 µm/10.7 µm Comparison of Shortwave
Enhanced-V thundestorm top signature
Texas Dryline
10.7 µm/3.9 µm Comparison (10.7 µm night)
10.7 µm/3.9 µm Comparison (3.9 µm night)
10.7 µm/3.9 µm Comparison (0500 UTC)
10.7 µm/3.9 µm Comparison (10.7 µm day)
10.7 µm/3.9 µm Comparison (3.9 µm day)
10.7 µm/3.9 µm Comparison (1500 UTC)
Cloud Water Phase and Ground Fires (3.9 µm)
Cloud Water Phase and Ground Fires (10.7 µm)
Cloud Water Phase and Ground Fires (Reflectivity Product)
Cloud Water Phase and Ground Fires (Product Comparison)
Great Lakes Visible Imagery
Great Lakes 10.7 µm Imagery
Great Lakes Reflectivity Product Imagery
Great Lakes 6.7 µm Imagery
Liquid Water Cloud over Snow (Visible)
Liquid Water Cloud over Snow (10.7 µm)
Liquid Water Cloud over Snow (3.9 µm)
Liquid Water Cloud over Snow (Reflectivity Product)
Supercooled Water
Fog Product
Nighttime Outflow Boundary
False Fog