I am currently a physicist with the Harvard-Smithsonian Center for Astrophysics, Cambridge, MA, USA. My research interests include the remote sensing of atmospheric trace gases, aerosols, and clouds, data validation, and analysis, atmospheric radiative transfer modeling and instrument calibration, tropospheric chemistry, air quality and climate change integrating satellite, in-situ measurements and model simulations. I received my Ph.D. degree in atmospheric science from The University of Alabama in Huntsville, Huntsville, AL, USA, in 2002.