Dr. Rasch was a chair of the International Global Atmospheric Chemistry Program (IGAC, 2004‐2008), and participates on the steering and scientific committees of a number of international scientific bodies. He was named a fellow of the American Association for the Advancement of Science, recognized for his contributions to climate modeling and connecting cloud formation, atmospheric chemistry and climate. He has contributed to scientific assessments for the World Meteorological Organization, NASA and the Intergovernmental Panel on Climate Change.