The Observed Inflow Structure of a Thunderstorm with a Mesocyclone

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  • 1 University of Wyoming, Laramie, Wyoming
  • | 2 National Severe Storms Laboratory, Norman, Oklahoma
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Abstract

Inbound and outbound passes were made with an instrumented aircraft at a variety of altitudes in the inflow region of a severe thunderstorm containing a mesoscale vortex. The streamwise vorticity, helicity, and geostrophic thermal advection were estimated from these data. The increased helicity in the inflow region may explain the marked decrease in turbulence observed in this region.

Abstract

Inbound and outbound passes were made with an instrumented aircraft at a variety of altitudes in the inflow region of a severe thunderstorm containing a mesoscale vortex. The streamwise vorticity, helicity, and geostrophic thermal advection were estimated from these data. The increased helicity in the inflow region may explain the marked decrease in turbulence observed in this region.

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