8.4      WRF cold bias using NOAH-MP over snow.

Mass, Cliff, and David Ovens, Department of Atmospheric Sciences, University of Washington

Verification of the University of Washington real-time WRF system has revealed a substantial surface cold bias during the winter.   Evaluation of this bias has revealed that much of the problem can be traced to the NOAH-MP land surface model when snow cover is present.  This talk will examine the problem, discuss its expression by other modeling systems, and show that the deficiency is less for the earlier NOAH land surface model.