A Study of Wind Profiler Data Collected Upstream during Windstorms in Boulder, Colorado

J. Brent Bower Department of Meteorology, University of Utah, Salt Lake City, UT 84112

Search for other papers by J. Brent Bower in
Current site
Google Scholar
PubMed
Close
and
Dale R. Durran Department of Meteorology, University of Utah, Salt Lake City, UT 84112

Search for other papers by Dale R. Durran in
Current site
Google Scholar
PubMed
Close
Full access

Abstract

Wind profiler data from Lay Creek, Colorado, along with stability data from the Lander and Grand Junction rawinsonde observations, were examined in an attempt to link various parameters in the upstream flow to the onset of strong downslope winds in Boulder. Some correlation was found between the occurrence of high surface winds at Boulder and the upstream wind direction, upper tropospheric wind shear and the vertical phase shift across the troposphere. However, these parameters alone were not able to distinguish between windstorm and nonwindstorm events. It is likely that the remaining ambiguity could be eliminated with information on the location and strength of inversions in the upstream flow.

Abstract

Wind profiler data from Lay Creek, Colorado, along with stability data from the Lander and Grand Junction rawinsonde observations, were examined in an attempt to link various parameters in the upstream flow to the onset of strong downslope winds in Boulder. Some correlation was found between the occurrence of high surface winds at Boulder and the upstream wind direction, upper tropospheric wind shear and the vertical phase shift across the troposphere. However, these parameters alone were not able to distinguish between windstorm and nonwindstorm events. It is likely that the remaining ambiguity could be eliminated with information on the location and strength of inversions in the upstream flow.

Save