Mark's research interests involve studying scientific questions related to the meteorology and climatology of the polar regions. The studies are accomplished through the use of observations and numerical models. Recent projects covering the Antarctic involve: an observational study of the meteorology of the Ross Island region in relation to tropospheric ozone depletion events, analysis of observations collected during a recent unmanned aerial vehicle (UAV) field campaign, and the analysis of changes in the circulation and dynamics of the atmosphere in the Amundsen Bay region and West Antarctica. Projects in the Arctic include: analysis of extreme temperature events in the Canadian Arctic and contributions towards the development of the Regional Arctic System Model (RASM). Two frequently used tools for the studies done by Mark include the synoptic-climatology method of self-organizing maps (SOMs) and the Weather Research and Forecasting (WRF) model.