Sensitivity of modelled atmospheric circulation to the representation of stable boundary layer processes
King, J.C.; Jrrar, A.; Connolley, W.M.. 2007 Sensitivity of modelled atmospheric circulation to the representation of stable boundary layer processes. Geophysical Research Letters, 34 (6), L06708. 4, pp. 10.1029/2006GL028563Full text not available from this repository.
We examine the sensitivity of the modelled climate of the third generation Hadley Centre climate model to changes in the parametrization of surface and boundary-layer fluxes under stable stratification. Replacing the model's standard parametrization with one in which fluxes decrease more rapidly with increasing stability generates statistically-significant changes in modelled 500 hPa height. The largest changes are seen across the North Atlantic and North Pacific and occur during Northern Hemisphere summer, when persistent stable atmospheric boundary layers form over the western sides of these oceans. The atmospheric response in a coupled version of the model is stronger than in the atmosphere-only version, suggesting that feedbacks involving sea surface temperatures, surface fluxes and atmospheric circulation are important in determining the response.
|Programmes:||BAS Programmes > Global Science in the Antarctic Context (2005-2009) > Antarctic Climate and the Earth System|
|NORA Subject Terms:||Atmospheric Sciences|
|Date made live:||19 Nov 2007 14:47|
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