Errors caused by incompatible wind and buoyancy forcing in the ocean general circulation models.

Approved for public release; distribution is unlimited / The Geophysical Fluid Dynamics Laboratory Modular Ocean Model (GFDL
MOM) is used to investigate the model difference between compatible and incompatible
surface wind and buoyancy forcing. The atmosphere is a physical system in which
surface wind and temperature fields are related, however in most ocean numerical
models, the wind stress and buoyancy forcing are usually specified separately, i.e., no
constraint between the surface wind stress and surface air temperature is considered. In
reality, only one of these two fields can be prescribed in the atmosphere-driven ocean
models. When the surface wind field is prescribed, the surface air temperature should
be derived, and vice versa. If the two related fields are treated as totally independent in
forcing the ocean models the results will be distorted. Since the model solutions depend
upon the atmospheric forcing, it is important that we study the compatibility between the
wind and buoyancy forcings and the effect which incompatibility might have on the ocean
numerical models. This study shows that the surface wind and buoyancy forcing widely used in
ocean numerical models are incompatible. Such an incompatibility results in 21 % error
in the total northward transport of heat, 16% error in the total northward transport of
salt, 25% error in v velocity, and 16% error in w velocity.

Identiferoai:union.ndltd.org:nps.edu/oai:calhoun.nps.edu:10945/23658
Date12 1900
CreatorsKuo, Yu-Heng
ContributorsChu, Peter, Haney, Robert L., Naval Postgraduate School, Naval Postgraduate School, Meteorology
PublisherMonterey, California. Naval Postgraduate School
Source SetsNaval Postgraduate School
Languageen_US
Detected LanguageEnglish
TypeThesis

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