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Improvement of the GEOS‐5 AGCM upon updating the air‐sea roughness parameterization
Author(s) -
Garfinkel C. I.,
Molod A. M.,
Oman L. D.,
Song I.S.
Publication year - 2011
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2011gl048802
Subject(s) - stratosphere , climatology , environmental science , meteorology , general circulation model , atmospheric dynamics , atmospheric circulation , atmospheric sciences , atmosphere (unit) , geology , climate change , oceanography , geography
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.