Heat Budget Parameterization for the FNWC Primitive Equation Model Using Data for 16 January 1974.
NAVAL POSTGRADUATE SCHOOL MONTEREY CALIF
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The radiational model employed here computes the planetary albedo and the solar absorption by atmospheric layers and by earths surface for the primitive equation model of FNWC. Large-scale cloud parameterization in several layers enters into these computations. The solar computations are made on a gridpoint basis employing the water-vapor mass over each gridpoint. Longwave cooling effects over the same layers and at the earths surface are calculated using emissivity formulas after Sasamori, and are also dependent upon the cloud-parameterizations. Two forms of the cloud-parameterizations were tested using FNWC gridpoint oceanic data for 16 January 1974. The objective was to determine the parameterization which better verified the radiational balance as a function of latitude at the tropopause, as compared with the January satellite climatology. Separate heat-budget checks of the propospheric columns and of the oceanic-water mass were tested for consistency with January climatology. The smaller cloud-parameterization values gave the best verification.
- Atmospheric Physics