Modtran IR in the Atmosphere
CO
2
(ppm)
CH
4
(ppm)
Trop. Ozone (ppb)
Strat. Ozone scale
Ground T offset, C
hold water vapor
pressure
Rel. Hum.
Water Vapor Scale
Locality
Tropical Atmosphere
Midlatitude Summer
Midlatitude Winter
Subarctic Summer
Subarctic Winter
1976 U.S. Standard Atmosphere
No Clouds or Rain
Cumulus Cloud Base .66km Top 2.7km
Altostratus Cloud Base 2.4km Top 3.0km
Stratus Cloud Base .33km Top 1.0km
Stratus/Strato CU Base .66km Top 2.0km
Nimbostratus Cloud base .16km Top .66km
2 mm/hr Drizzle (modeled with Stratus Cloud)
5.0mm/hr Light Rain (modeled with Nimbostratus)
12.5mm/hr Moderate Rain (modeled with Nimbostratus)
25.0mm/hr Heavy Rain (modeled with Cumulus)
75.0mm/hr Extreme Rain (modeled with Cumulus)
Standard Cirrus Model
Sub visual Cirrus Model
NOAA Cirrus Model (LOWTRAN 6 Model)
Sensor Altitude km
Looking up
Looking down
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Model Description
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