Atmospheric Transmittance Radiance
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Users Guide to Lowtran 7
Author | : F. X. Kneizys |
Publisher | : |
Total Pages | : 152 |
Release | : 1988 |
Genre | : Atmospheric models |
ISBN | : |
LOWTRAN 7 is a low-resolution propagation model and computer code for predicting atmospheric transmittance and background radiance from 0 to 50,000 cm -1 at a resolution of 20 cm -1. The code is based on the LOWTRAN 6 (1983) model. Multiple scattered radiation has been added to the model as well as new molecular band model parameters and new ozone and molecular oxygen absorption parameters for the UV. Other modifications include a wind dependent desert model, new cirrus cloud models, and new cloud and rain models. The code also includes new representative (geographical and seasonal) atmospheric models and updated aerosol models with options to replace them with user-derived values. An improved extra-terrestrial solar source function is also included. Six modes of program execution are allowed with the new model and computer code for a given slant path geometry. This report contains a description to users for operating the LOWTRAN 7 computer code. It summarizes the capabilities of the new code, provides complete operating instructions as well as input and output from test cases for user validation. Also included are operating instructions for three programs that utilize LOWTRAN 7 output (plot, filter and scanning function programs).
Atmospheric Transmittance/Radiance: Computer Code LOWTRAN 6. Supplement: Program Listings
Author | : |
Publisher | : |
Total Pages | : 197 |
Release | : 1983 |
Genre | : |
ISBN | : |
This supplement lists the LOWTRAN 6 computer code for predicting atmospheric transmittance and the thermal radiation emitted by the atmosphere and earth from 350 to 40,000 per cm at a spectral resolution of 20 per cm. The program is based on the LOWTRAN 5 (1980) computer code. Solar/lunar scattered radiation has ben added to the code, as well as a new spherical refractive geometry subroutine and an improved water vapor continuum model. Other modifications to the code include a wind-dependent maritime aerosol model, a vertical structure aerosol model, a cirrus cloud model, and a rain model. The computer code contains representative (geographical and seasonal) atmospheric models and representative aerosol models with an option to replace them with user-derived or measured values. The program can be run in one of three modes, namely, to compute only atmospheric transmittance, to compute atmospheric transmittance and radiance, or to compute atmospheric transmittance, atmospheric radiance, and scattered solar/lunar background radiance for a given slant path geometry. Two new programs now available with the LOWTRAN 6 package, the plot program and the filter function program, are listed in this supplement.
Atmospheric Transmittance/radiance
Author | : F. X. Kneizys |
Publisher | : |
Total Pages | : 204 |
Release | : 1983 |
Genre | : Atmospheric radiation |
ISBN | : |
Atmospheric Transmittance/radiance
Author | : F. X. Kneizys |
Publisher | : |
Total Pages | : 0 |
Release | : 1983 |
Genre | : Atmospheric radiation |
ISBN | : |
The Measurement of Atmospheric Transmittance from Sun and Sky with an Infrared Vertical Sounder
Author | : William Lee Smith |
Publisher | : |
Total Pages | : 24 |
Release | : 1972 |
Genre | : Atmosphere |
ISBN | : |
This paper describes the determination of atmospheric transmittance from ground-based sun and sky radiance measurements with a prototype of the Nimbus E Infrared Temperature Profile Radiometer (ITPR).
The LT4M Atmospheric Transmittance/radiance Module
Author | : Joseph H. Pierluissi |
Publisher | : |
Total Pages | : 78 |
Release | : 1982* |
Genre | : Absorption spectra |
ISBN | : |