Witnesses:
Dr. Susan Solomon
of the National Oceanic and Atmospheric Administration (NOAA)
Dr. Kevin Trenberth
of the National Center for Atmospheric Research (NCAR)
Dr. Richard Alley
of the Department of Geosciences, Pennsylvania State University
Dr. Gerald Meehl
of the National Center for Atmospheric Research (NCAR)
Dr. Roger Pielke, Jr.
of the Center for Science and Technology Policy Research, University of
Colorado
The State of Climate Change Science 2007: The Findings of the Fourth Assessment Report by the Intergovernmental Panel on Climate Change (IPCC), Working Group I Report