Symposium on the Challenges of Severe Convective Storms


Elevated convection and tropospheric inertial instability: A connection?

John A. Knox, University of Georgia, Athens, GA; and D. M. Schultz

The relationship between convection and tropospheric inertial instability remains uncertain. In this presentation, we examine one or more cases of banded elevated convection in the vicinity of weakly inertially stable/inertially unstable mid-tropospheric conditions in the northern United States (see figure, from 0900 UTC 20 July 2005, depicting negative absolute vorticity in the RUC model at 500 mb along the North Dakota-Canada border).

Using simple dynamical arguments, observations, and high-resolution modeling results, we examine the possibility that wind circulations associated with the instability were sufficient to trigger the convection.

Poster Session 1, The Observation, Modeling, Theory, and Prediction of Severe Convective Storms and Their Attendant Hazards
Wednesday, 1 February 2006, 2:30 PM-4:00 PM, Exhibit Hall A2

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