This module computes the brightness temperature of the atmosphere as would be observed by a ground-based upward-looking radiometer, under clear-sky conditions, along direction θ relative to the zenith (0 < θ < 80^o), from sea-surface height z₁ = 0 to z₂ = 32 Km, at any frequency 0 < f < 1000 GHz, using a Standard Atmosphere model.

Sea Surface Properties:

Temperature (C):

Pressure (mbar):

Water Vapor Density (g/m³):

Zenith Angle (degrees):

Frequency Range:

0.1 to 10 GHz
10 to 100 GHz
100 to 1000 GHz

	Sky Radiometric Temperature
Sky Radiometric Temperature (K)
	Frequency, GHz