Calculation of Atmospheric Transmittance by IBM 3033 Computer Code LOWTRAN IIIB

LOWTRAN IIIB is a FORTRAN computer program for prediction of atmospheric optical transmittance, developed at the U.S. Air Force Geophysics Laboratory (AFGL). LOWTRAN IIIB was received in the modified form developed by Naval Weapons Center China Lake for use on the UNIVAC 1110 computer, and has now b...

Full description

Saved in:
Bibliographic Details
Main Author: Shin,Moon-Sik
Format: Report
Language:English
Subjects:
Aerosols
Coefficients
Computer programs
Extinction
Infrared transmitters
Light transmission
LOWTRAN 3B computer program
Mathematical models
Mathematical prediction
Meteorology
Ocean environments
Optics
Radiation absorption
Transmittance
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:LOWTRAN IIIB is a FORTRAN computer program for prediction of atmospheric optical transmittance, developed at the U.S. Air Force Geophysics Laboratory (AFGL). LOWTRAN IIIB was received in the modified form developed by Naval Weapons Center China Lake for use on the UNIVAC 1110 computer, and has now been interfaced to the IBM 3033 computer. Due to complier storage limitation in the IBM computer, the atmospheric data are read into common storage at the beginning of the program. The two dimensional block data submodule has been replaced with a linear data array, and a new subroutine (array) written to reformat the data. The basic logic structure is unchanged. Comparisons of NPS LOWTRAN IIIB computations with direct optical extinctions measurement over Monterey Bay and at San Nicolas Island indicate that under these circumstances LOWTRAN IIIB underestimates the extinction due to aerosols while the computed molecular absorption is in substantial agreement with experiment. LOWTRAN IIIB is presently available as a method of predicting atmospheric transmittance at low resolutions at NPS and is suitable for incorporation in simulations and studies of electro-optic weapon/sensor systems performance.