Modeling the barotropic response of the global ocean to atmospheric wind and pressure forcing - comparisons with observations

Details Modeling the barotropic response of the global ocean to atmospheric wind and pressure forcing - comparisons with observations Modeling the barotropic response of the global ocean to atmospheric wind and pressure forcing - comparisons with observations

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30f...8c&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 6, pp. 8-1, CiteID 1275, DOI 10.1029/2002GL016473

Physics

87

Oceanography: General: Numerical Modeling, Oceanography: Physical: Air/Sea Interactions (0312), Oceanography: Physical: Surface Waves And Tides (1255), Oceanography: Physical: Tsunamis And Storm Surges

Scientific paper

A global simulation of the ocean response to atmospheric wind and pressure forcing has been run during the Topex/Poseidon (T/P) period (1992-2002), using a new hydrodynamic finite element (FE) model, MOG2D-G. Model outputs are compared to in situ observations with tide gauge data (TG) and bottom pressure gauge data (BPR), and also with T/P altimetric cross over points (noted CO). Intercomparisons were performed over the 1993-1999 period. The model correction reduces the sea level variance by more than 50% at TG locations, and by more than 15% at T/P CO, when compared to the classical inverse barometer correction (IB). The model impact differs between high and low latitudes: in the very energetic high latitudes areas, MOG2D-G is efficient in reducing the variance, while at low latitudes, the results are similar to the IB static response. In shallow water, the model shows an oceanic response very different from the IB response. In conclusion, MOG2D-G models the high frequency (HF) atmospheric forced variability of the global ocean with unprecedented accuracy.

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