My main research areas are atmospheric gravity waves and middle and upper atmospheric dynamics.

I have investigated in detail gravity wave generation by convection and have subsequently developed a source spectrum parameterization for convectively generated gravity waves that can be used in General Circulation Models (GCMs). This new parameterization has now been implemented in NCAR's Whole Atmosphere Community Climate Model (WACCM).

My most recent work includes the simulation of the Quasi-Biennial Oscillation (QBO) with the Community Earth System Model (CESM).