Ralph J. Cicerone Distinguished University Professor of Atmospheric Science
Associate Chair for Atmospheric Science
Joyce Penner’s research group focuses on improving aerosol models of the global atmosphere. Aerosol particles both reflect and absorb solar radiation. Reflection tends to cool the atmosphere, while absorption within the atmospheric column changes the temperature lapse rate. She has served on the UN Intergovernmental Panel on Climate Change (IPCC) and contributed to the climate change reports issued by the UN panel that shared the 2007 Nobel Peace Prize.