Wind-dependent desert aerosol model: radiative properties. Technical report, November 1986-April 1988
This report presents a desert aerosol model that predicts aerosol radiative properties during background and severe dust-storm conditions. The model treats the desert aerosol as an external mixture of natural carbon, water soluble, and sand particles. The sand consists of two kinds of particles, pure quartz and quartz contaminated with a small amount of hematite. Mie calculations are performed using different size distributions and indices of refraction for each type of particle, and then a volume-weighting scheme is used to obtain the radiative properties of the aerosol as a whole. Attenuation coefficients, single scattering albedo, and asymmetry parameter are given for 68 wavelengths between 0.2 and 300 micro. The results indicate that extinction is wavelength-dependent for background conditions, but increases and becomes nearly constant for dust-storm conditions.
- Research Organization:
- Optimetrics, Inc., Burlington, MA (USA)
- OSTI ID:
- 6284222
- Report Number(s):
- AD-A-201951/1/XAB; OMI-221
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
AEROSOLS
OPTICAL PROPERTIES
DESERTS
STORMS
DUSTS
ALBEDO
ASYMMETRY
ATTENUATION
CARBON
HEMATITE
INDEXES
MIXTURES
PARTICLES
PROGRESS REPORT
QUARTZ
REFRACTION
SAND
SCATTERING
SOLUBILITY
WATER
ARID LANDS
CHALCOGENIDES
COLLOIDS
DISASTERS
DISPERSIONS
DOCUMENT TYPES
ELEMENTS
HYDROGEN COMPOUNDS
IRON COMPOUNDS
IRON ORES
IRON OXIDES
MINERALS
NONMETALS
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SILICON COMPOUNDS
SILICON OXIDES
SOLS
TRANSITION ELEMENT COMPOUNDS
500200* - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)