2012-present, Professor, Aerospace Engineering Sciences, University of Colorado
2004-2012, Associate Professor, Aerospace Engineering Sciences, University of Colorado
1995-2004, Senior Research Physicist, SRI International, Menlo Park, CA
1990-1994, Research Physicist, SRI International, Menlo Park, CA
Roubos Faculty Fellow, 2012
Dean's Award for Outstanding Teaching, 2011
CU Boulder Provost's Faculty Achievement Award, 2010
University of Michigan Alumni Merit Award, 2005
NASA Group Achievement Award, 2005
SRI International Presidential Achievement Award, 2004
NASA Group Achievement Award, 2000
Remote sensing of the atmosphere and ionosphere using lidar and radar techniques; optical systems and design; atmospheric and space physics; geophysical fluid dynamics, electrodynamics, and plasma physics.