As director of one of NCAR's major labs, Holland oversees research into weather, climate, and atmospheric chemistry. A senior scientist, Holland's background is in tropical meteorology and severe weather, with a strong emphasis on hurricanes, typhoons, and other tropical cyclones. He has studied the potential impacts of climate change on tropical cyclones, concluding that an increase in the number of hurricanes since the mid-1990s is likely linked to global warming rather than natural variability. Holland is engaged in national efforts to improve hurricane forecasts, including long-range predictions of the frequency, intensity, and approximate locations of the storms.
