Multi-model simulations of a convective situation in low-mountain terrain in central Europe

• DOI: 10.1007/s00703-008-0323-6
• Publication Date: 2008-08-19T11:28:21Z
• Authors: J. Trentmann; C. Keil; M. Salzmann; C. Barthlott; H.-S. Bauer; T. Schwitalla; M. G. Lawrence; D. Leuenberger; V. Wulfmeyer; U. Corsmeier; C. Kottmeier; H. Wernli
• Keywords: MM5; Forcing (mathematics); Diurnal cycle; Atmospheric convection

The goal of the present study is to investigate variability simulated convective precipitation by three convection-resolving models using different set-ups and initial boundary conditions. COSMO, MM5 WRF have been used simulate atmospheric situation on 12 July 2006, when local convection occurred in central Europe under weak synoptic forcing. focus this investigation northern Black Forest South-West Germany. fields from nine model simulations differ considerably. Six capture character event. However, they considerably location timing intense cells. Only one simulation captures early onset precipitation; all other simulations, delayed up five hours. All significantly underpredict amount surface compared gauge-adjusted radar observations. diurnal cycles show maximum CAPE minimum CIN values afternoon. times are shifted accordance CIN. In with an also appear early. precipitation, however, does not correlate or