Radiational parameterization for the FNWC primitive equation model using data over the oceans for 16 July 1974

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Author
Beahan, Terry William
Date
1975-09Advisor
Martin, Frank L.
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Show full item recordAbstract
This study employs a radiational model, with large-scale cloud
parameterization in several layers, in order to compute the absorption
of solar insolation by the ocean's surface and by atmospheric layers,
and to compute the planetary albedo for the FNWC primitive equation
model. Solar insolation dispositions were computed on a gridpoint
basis using water-vapor mass and cloud amounts. Using emissivity formulas
after Sasamori, the long-wave cooling effects were calculated at
the earth's surface and over the tropospheric layers, and were found
to be dependent upon the cloud parameterization. FNWC data over oceanic gridpoints for 16 July 1974 were used to
test two forms of the cloud parameterization. The objective was to
determine the parameterization which better verified the radiational
balance at the top of the atmosphere as a function of latitude as
compared with satellite climatology. The smaller cloud parameterization
gave the better verification.
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