Bryan J. Hannegan

Dr. Hannegan was the 23rd AGU Congressional Science Fellow, working with the Senate Committee on Energy and Natural Resources from 1999-2000.

Dr. Hannegan is the Staff Scientist for the U.S. Senate Committee on Energy and Natural Resources, where he coordinates the Committee’s work on national energy policy, particularly as it relates to environmental issues such as climate change. He also is responsible for the Committee’s budget and oversight work on energy efficiency, alternative fuels, renewable energy and scientific research and development programs within the Department of Energy.

Dr. Hannegan has been with the Committee since October 1999, initially working as a Fellow sponsored by the American Geophysical Union. Prior to joining the Committee, he served two one-year terms as President of the National Association of Graduate-Professional Students, where he coordinated successful grassroots legislative campaigns to expand tax incentives for higher education.

He received his Ph.D. in Earth System Science from the University of California at Irvine, where his research focused on developing and using advanced computer models to understand transport and chemistry of trace gases in the atmosphere. His research is published in the peer-reviewed literature and has been the subject of several print articles. He also holds a Masters’ degree in Mechanical and Aerospace Engineering, also from UC Irvine, and a Bachelors’ Degree in Meteorology from the University of Oklahoma.