8.6 What Needs Parameterization? Assessing Climate Model Errors by Timescale

Thursday, 12 July 2012: 11:45 AM
Essex North (Westin Copley Place)
Baylor Fox-Kemper, Univ. of Colorado, Boulder, CO; and P. E. Hamlington

Many processes on scales ranging from 4m to 400km are presently poorly resolved or only partially parameterized in climate models. We will present high-resolution simulations spanning these scales, discuss the diagnosis of the effects of the unresolved processes, and identify climate model errors that are related. The short timescale errors in climate model air-sea fluxes draws the attention to near-surface processes, such as submesoscale instabilities and Langmuir turbulence. The present state of the parameterization art will be discussed and critiqued.
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