Senior researcher, Space Science and Engineering Center
Expert on hurricane research, and environmental satellite techniques/applications to tropical cyclones
Professor emeritus, geology and geophysics; director, ice coring and drilling services
Expert on Antarctica, glaciology, ice drilling
Professor, atmospheric and oceanic sciences; director, Cooperative Institute for Meteorological Satellite Studies
Expert on satellite meteorology and climatology, weather, atmospheric optics
Professor, Atmospheric and Oceanic Sciences; Director, Nelson Institute Center for Climatic Research
Expert on climate variations (El Niño, tropical variations), climate change and climate change impacts in Wisconsin.