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heimbach |
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The ECCO 1 degree global WOCE Synthesis: Estimates of Surface Fluxes |
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D. Stammer, K. Uejoshi, W. Large and C. Wunsch for the ECCO Consortium. |
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Surface fluxes of stress, heat and moisture are included in the control |
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vectors of the ECCO global ocean state estimate. As such, the prior |
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values (from NCEP) are adjusted, along with other control variables, |
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to bring the model into better agreement with the WOCE observations. |
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Here we test the adjusted estimates against independent ones derived |
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from bulk formula and satellite observations. All ECCO adjustments |
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are within the crude prior error bars prescribed for these fields. |
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On the large scale, adjustments are therefore consistent with known |
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deficiencies in the NCEP products. On the large scales, the inferred |
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adjustments to NCEP winds are consistent also with values obtained from |
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satellite wind measurements. However, on regional scale wind adjustments |
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exhibit features that reflect ocean model inability to resolve intense |
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boundary currents. Further improvements in the surface flux estimates |
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obtained using data assimilation are anticipated as the estimation |
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procedure becomes more complete, and the ocean model more accurate. |
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