The long-term research goal of the group is to understand which processes are responsible for observed variations of Earth’s atmospheric chemical composition. The chemical composition of the atmosphere directly impacts Earth’s radiative balance and consequently surface warming. It also defines the oxidation capacity of the global troposphere that determines the quality of air where we live and breathe.

We approach this goal mainly by developing novel mathematical models to reconcile new satellite observations with current knowledge. Often these models are too complex to resolve analytically so we tend to use computational approaches. Over the last decade or so we have also led the development of field experiments using research aircraft and ground-based instruments, and have designed science requirements for new aircraft and satellite instruments.

Our current research questions include:

The methods we have developed to study Earth's atmosphere are also relevant to other planetary atmospheres. Through various collaborations we have begun to study the atmospheric chemical composition of Mars and exoplanets, and to interpret observed variations of brown dwarf light curves in terms of atmospheric features.