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Composite Mapped Mosaics

Mapped mosaics are satellite images using composite AVHRR GAC data gathered onboard NOAA's polar orbiting satellites. These images are created once per day, and there are two different projections: mercator mosaics and polar stereographic mosaics. The images depict the digital counts for the image pixels, where the IR images are related to temperature (darker is warmer) and the visible images are related to brightness (darker is less bright).

These images are available below in daytime IR, nighttime IR, and visible. Please note that the grayscale for the visible images has been enhanced for greater image clarity.

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Mercator mapped mosaics (tropical images)

Coverage extends 360 degrees longitude and from 40 to -40 degrees latitude, and the resolution is about 40 km at the equator.
Tropical daytime IR Image - 247K
Tropical nighttime IR Image - 235K
Tropical visible Image - 211K

NOTE: this product actually has a resolution of 9.9 km at the equator; the online version's resolution is reduced.

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Polar stereographic mapped mosaics (hemispheric images)

Coverage extends over the northern and southern hemispheres, and the resolution is 14.8 km at the equator and 29.6 km at the poles.
Northern Hemisphere daytime IR Image - 685K
Northern Hemisphere nighttime IR Image - 662K
Northern Hemisphere visible Image - 624K
Southern Hemisphere daytime IR Image - 742K
Southern Hemisphere nighttime IR Image - 725K
Southern Hemisphere visible Image - 735K

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Go back to the Image Products Home Page.

Other Polar Imagery Products:

# Wefax Imagery
# Global Vegetation Index Products
# Coastwatch Imagery
# 2 km Continental U.S. Imagery
#AMSU Derived Composite Imagery
# SSM/I Derived Composite Imagery

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Questions or comments?
Contact Joseph Askew (Joseph.Askew@noaa.gov)
Last revised: April 17, 2003 (RR)