Inertial Instability, PV dipoles, and Upper Midwest Severe Weather

The University of Wisconsin Nonhydrostatic Modeling System (UWNMS), theory, and observations are used to investigate the role of inertial instability and PV dipoles created by convective updrafts and downdrafts in Upper Midwest severe weather events.

UTLS PV dipoles and tropical cyclones

Dynamical and climatological studies of inertial instability and UTLS PV dipoles in tropical cyclones with nonhydrostatic numerical models and high resolution global data sets.

Tropopause Folds, Midlatitude Cyclones, and Jets

Numerical simulations and aircraft flight data are used to investigate the cause of tropopause folds, constituent transport, and the role of inertial instability in midlatitude cyclones and westerly jets.

Influence of the QBO on the UTLS

Climatological investigations into the influence of the stratospheric quasi-biennial oscillation (QBO) on the tropical and subtropical tropopause environment.