An Evaluation of the LOWTRAN 6 Navy Maritime Aerosol Model Using 8- to 12-Micrometers Sky Radiances.

Measurements of infrared (8-12 micrometers) sky radiances over the ocean are compared with those calculated by LOWTRAN 6 by means of the Maritime Aerosol Model along with simultaneously measured (radiosonde) meteorological parameters and atmospheric radon concentrations. For a low wind-speed conditi...

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Bibliographic Details
Main Author: Hughes,Herbert G
Other Authors: NAVAL OCEAN SYSTEMS CENTER SAN DIEGO CA
Format: Text
Language:English
Published: 1986
Subjects:
Atmospheric Physics
*RADIANCE
*INFRARED RADIATION
MATHEMATICAL MODELS
ALGORITHMS
COMPUTERIZED SIMULATION
LIGHT SCATTERING
OPTICAL PROPERTIES
PARTICLE SIZE
AEROSOLS
MODELS
DISTRIBUTION
COMPARISON
INFRARED IMAGES
WIND VELOCITY
SKY
METEOROLOGICAL PHENOMENA
RADIOSONDES
OCEANS
OCEAN ENVIRONMENTS
ATMOSPHERE MODELS
HORIZON
LOWTRAN 6 computer program
WUSXB3
WUDN888715
PE62759N
North Atlantic
Online Access:http://www.dtic.mil/docs/citations/ADA179817
http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA179817
Description
Summary:Measurements of infrared (8-12 micrometers) sky radiances over the ocean are compared with those calculated by LOWTRAN 6 by means of the Maritime Aerosol Model along with simultaneously measured (radiosonde) meteorological parameters and atmospheric radon concentrations. For a low wind-speed condition, the measured and calculated radiances agreed within 2% at the optical horizon. However, during moderate wind-speed conditions, the current wind speed component of the aerosol model had to be lowered by factors near 20 in order to produce agreement of the calculated and measured radiances. The adjusted model is then found to agree closely with published results of large particle size distribution measurements in the North Atlantic. Keywords: Optical scattering; Atmospheric modeling; Aerosol size distribution; Radiance algorithm; Infrared radiance; Thermal imaging.

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