On the Role of Stochastic Wind Forcing in Shaping the Ocean Circulation

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0002370 Moore/CUThe response of the ocean circulation to stochastic wind forcing will be studied in a series of numerical experiments. Wind fields from the operational meteorological models, together with data from some of the reanalysis efforts will be partitioned in frequency space. The higher frequency components will be regarded as stochastic. An additional estimate of the stochastic component of the wind field will be obtained by identifying the part that is uncorrelated with sea surface temperature. Idealised, quasigeostrophic ocean models will be forced with idealized stochastic wind fields derived from the data products previously described. The oceanic response will be compared with that predicted by the leading singular vectors of the oceanic flow. More realistic ocean models will be forced with both idealized wind fields and the data from the operational and reanalyzed products. The behavior of these more realistic runs will be compared with the stochastic optimals of the more realistic flow and with TOPEX/POSEIDON altimeter data.