Accession Number:

ADA151341

Title:

Equilibrium Radiance Model Applications and Comparisons to Atmospheric Measurements and Rayleigh Models,

Descriptive Note:

Corporate Author:

VIZ ABILITY CORVALLIS OR

Personal Author(s):

• Gordon, J. I.
• Johnson, R. W.

Report Date:

1984-10-01

Pagination or Media Count:

11.0

Abstract:

The equilibrium radiance model, which assumes constancy in the source function along the path of sight, predicts equilibrium radiance as a function of the angle from the sun. Measurements made at all altitudes in the troposphere of cloudless sky radiance in the visible spectrum consistently support this prediction. As a result, sky radiances can be used to obtain 1 vertical space- to-sensor scattering transmittance, 2 equilibrium radiance, and 3 path radiance through the atmosphere and in the troposphere. Comparisons are made of the constant equilibrium radiance model predictions of sky radiance, irradiance, and equilibrium radiance to 1 other models for the Rayleigh atmosphere, and 2 to measurements in the troposphere for thin atmospheres. The agreements are good. Additional keywords Reprints, Atmosphere optics, Optical properties, Radiation transmittance, Equations. Author

Descriptors:

• *ATMOSPHERE MODELS
• *RADIANCE
• ALTITUDE
• ANGLES
• ATMOSPHERES
• ATMOSPHERIC SCATTERING
• EARTH ATMOSPHERE
• LINE OF SIGHT
• OPTICAL PROPERTIES
• PATHS
• RAYLEIGH WAVES
• REPRINTS
• SKY
• SUN
• THINNESS
• TRANSMITTANCE
• TROPOSPHERE
• VISIBLE SPECTRA

Subject Categories:

• Atmospheric Physics
• Optics
• Radiofrequency Wave Propagation

Distribution Statement:

APPROVED FOR PUBLIC RELEASE