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Iowa State University

2001

Series

Earth Sciences

Articles 1 - 1 of 1

Full-Text Articles in Physics

Role Of Stratospheric Air In A Severe Weather Event: Analysis Of Potential Vorticity And Total Ozone, Melissa A. Goering, William A. Gallus Jr., Mark A. Olsen, John L. Stanford Jun 2001

Role Of Stratospheric Air In A Severe Weather Event: Analysis Of Potential Vorticity And Total Ozone, Melissa A. Goering, William A. Gallus Jr., Mark A. Olsen, John L. Stanford

Geological and Atmospheric Sciences Publications

The role of dry stratospheric air descending to low and middle tropospheric levels in a severe weather outbreak in the midwestern United States is examined using NCEP Eta model output, Rapid Update Cycle (RUC) analyses, and Earth probe Total Ozone Mapping Spectrometer (EP/TOMS) total ozone data. While stratospheric air was not found to play a direct role in the convection, backward trajectories show stratospheric air descended to 800 hPa just west of the convection. Damaging surface winds not associated with thunderstorms also occurred in the region of greatest stratospheric descent. Small-scale features in the high-resolution total ozone data compare ...