High resolution computer calculation of optical transmittance at sea level over Monterey
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Authors
Güner, Nusret
Subjects
Optical transmittance
Molecular absorption
Aerosol extinction
Molecular absorption
Aerosol extinction
Advisors
Cooper, A.W.
Date of Issue
1978-12
Date
December 1978
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
Computer programs have been developed for calculation of the molecular absorption and aerosol extinction for horizontal path propagation of radiation in the wavelength range above 0.55 µm. The AFCRL line parameters compilation is used as input data with local weather conditions for the Monterey Bay and model of typical aerosol size distribution from Shettle and Fenn. Wind speed and relative humidity are included in the form developed by Wells, Gal and Munn. Infinite resolution computations have been carried out for 1.06, 3.8 and 10.6 µm and results tabulated for monthly and yearly average weather conditions on Monterey Bay. Bandwidth-averaged spectral transmittances have been calculated at 0.01 cm-l and 0.5 cm-l resolution for the same conditions.
Comparisons with previously published data show agreement to 1.8% with maritime model aerosol Mie-scattering calculations by Selby using LOWTRAN III B [Ref. 12]. Analysis of sensitivity to changes of pressure and temperature for the 3.8 µm range showed only
small effects of these parameters. However a change in water vapor partial pressure results in a 0.75%/mbar change in transmittance in the 3.8 µm region.
Type
Thesis
Description
Series/Report No
Department
Physics and Chemistry
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
Copyright is reserved by the copyright owner