Accession Number:

ADA058643

Title:

Atmospheric Transmittance/Radiance: Computer Code LOWTRAN 4

Descriptive Note:

Environmental research papers

Corporate Author:

AIR FORCE GEOPHYSICS LAB HANSCOM AFB MA

Report Date:

1978-02-28

Pagination or Media Count:

99.0

Abstract:

This report describes a computer code for predicting atmospheric transmittance and the thermal radiation emitted by the atmosphere and earth in the wavelength range from 0.25 to 28.5 micrometers at a spectral resolution of 20cm. The program is based on the LOWTRAN 3B 1976 computer code and includes the same data package. The effect of aerosol radiance and nitric acid HNO3 transmittance and radiance is included. The computer code also contains six standard geographical and seasonal atmospheric models and four standard aerosol models with an option to replace either with non-standard or measured values. The program can be run in one of two modes, namely, to compute only atmospheric transmittance as LOWTRAN 3B or radiance and atmospheric transmittance for any given path geometry.

Subject Categories:

  • Meteorology
  • Computer Programming and Software

Distribution Statement:

APPROVED FOR PUBLIC RELEASE