Improvement of the GEOS-5 AGCM upon updating the air-sea roughness parameterization

2011/09/01 by Chaim I. Garfinkel, C. I. Garfinkel, A. M. Molod +5 · 2 citations
Earth and Planetary Sciences · Environmental Science · #Meteorological Phenomena and Simulations #Climate variability and models #Oceanographic and Atmospheric Processes

paper · pdf · doi:10.1029/2011gl048802

Abstract

[1] The impact of an air-sea roughness parameterization over the ocean that more closely matches recent observations of air-sea exchange is examined in the NASA Goddard Earth Observing System, version 5 (GEOS-5) atmospheric general circulation model. Surface wind biases in the GEOS-5 AGCM are decreased by up to 1.2m/s. The new parameterization also has implications aloft as improvements extend into the stratosphere. Many other GCMs (both for operational weather forecasting and climate) use a similar class of parameterization for their air-sea roughness scheme. We therefore expect that results from GEOS-5 are relevant to other models as well.

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