NOAA Office of Satellite and Product Operations


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Image Enhancement Information


Abbreviation File Label Enhancement Descriptions:
AVN TXT AVN Aviation color enhancement
BD TXT Dvorak Dvorak enhancement - used for Tropical Classifications with the Dvorak Technique
FT TXT Funktop Funktop enhancement - developed by Ted Funk to highlight intense areas of precipitation
JSL TXT JSL JSL2 enhancement - developed by Jim Lynch to bring out low level and high level clouds in tropical cyclones
IR2 TXT Shortwave (IR2) Channel 2 Shortwave Infrared imagery - Shortwave, sometimes considered "night visible" used with standard sectors.
IR2T TXT Shortwave (IR2) Channel 2 Shortwave Infrared imagery - Alternate enhancement used with Tropical imagery floaters.
IR2F TXT Fire (IR2) IR Channel 2 with the standard fire enhancement to show hot spot activity
IR2H TXT Fire Hot IR Channel 2 with enhancemnet for the hot summer season
IR2W TXT Fire Winter IR Channel 2 with enhancement for the cool winter season
IR4   None Unenhanced Channel 4 Infrared Imagery
RB TXT Rainbow Rainbow enhancement curve - Colorful enhancement for a pretty image
RBTOP TXT Rainbow New variation on the Rainbow enhancement curve - Colorful enhancement
RGB   RGB Combination of Visible and IR using a three channel technique to form a Red/Green/Blue false color image.
VIS   Visible Unenhanced Visible imagery that usually transitions to IR2 overnight
WV TXT Water Vapor IR Channel 3
WVB TXT Water Vapor IR Channel 3, alternate "Blue" hued version


TXT File: This file contains the brightness or brighness temperature (IR4 only) breakpoints in "Brightness-Blue-Green-Red" format as used with the McIDAS EU command to generate some of the enhanced images on our web sites. Not all of our images use an enhancement.