Experiments using atmospheric forcing from a FGGE analysis to drive an upper ocean model

Details Experiments using atmospheric forcing from a FGGE analysis to drive an upper ocean model Experiments using atmospheric forcing from a FGGE analysis to drive an upper ocean model

Jun 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983stin...8329156c&link_type=abstract

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Air Water Interactions, Atmospheric Models, Global Atmospheric Research Program, Mathematical Models, Ocean Models, Boundary Layers, Heat Flux, Marine Meteorology, Ocean Temperature, Stress Distribution, Weather Forecasting, Wind (Meteorology)

Scientific paper

Results are presented of a series of numerical experiments in which an upper ocean model is driven by surface heat fluxes and stress fields derived from the FGGE SOP-1 GLAS analysis/forecast system (Halem, et al., 1982). The model results show that most changes in the mixed layer height and horizontal velocity occurs in the first days. On the other hand, changes in the temperature field take a longer time to develop. In the most realistic case (real initial conditions, instantaneous forcing fields from the atmospheric analysis), the resulting changes in temperature were larger than observed and the correlation between observed and predicted changes was poor. The deficiency in the forecast of SST changes may be due to several factors: lack of sufficient ocean resolution, improper initialization, lack of feedback between the ocean and the atmosphere and the absence of transports by the strong boundary currents, and perhaps unrealistic surface fluxes of heat and momentum. Unless these problems are alleviated it is not reasonable to perform coupled atmospheric ocean forecasts.

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