gcmd_keyword : AEROSOL OPTICAL DEPTH/THICKNESS>ANGSTROM EXPONENT

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parent	AEROSOLS>AEROSOL OPTICAL DEPTH/THICKNESS

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definition	Aerosol Angstrom Coefficient is an exponent that expresses the spectral dependence of aerosol optical thickness (τ) with the wavelength of incident light (λ). The spectral dependence of aerosol optical thickness can be approximated (depending on size distribution) by, τa = β λα where α is Angstrom exponent (β = aerosol optical thickness at 1 μm) Angstrom exponent (computed from τ measurements on two different wavelengths) can be used to find τ on another wavelength using the relation. The Angstrom exponent provides additional information on the particle size (larger the exponent, the smaller the particle size), aerosol phase function and the relative magnitude of aerosol radiances at different wavelengths.
identifier	6e7306a1-79a5-482e-b646-74b75a1eaa48
label	ANGSTROM EXPONENT
parent_identifier	61c3b720-abc8-4430-866c-f1da35d2cd0b
GCMD Metadata	6e7306a1-79a5-482e-b646-74b75a1eaa48
Ancestors	ANGSTROM EXPONENT < AEROSOL OPTICAL DEPTH/THICKNESS < AEROSOLS < ATMOSPHERE < EARTH SCIENCE < Science Keywords