dissemination of information for lawyers in the public, private, and NGO sectors. The Sabin Center, which is led by Michael Gerrard, Director of the Sabin Center and Andrew Sabin Professor of Professional Practice at Columbia Law School, and Michael Burger, Executive Director of the Sabin Center, works closely with the scientists at Columbia University’s Earth Institute and with governmental, nongovernmental, and academic organizations. Kevin E. Trenberth Kevin E. Trenberth is a distinguished senior scientist in the Climate Analysis Section at the National Center for Atmospheric Research (NCAR). He has authored over 540 publications in the area of climate and given hundreds of talks on the subject, and is one of the most highly cited researchers in geophysics. Further, he has extensively investigated global-scale climate dynamics, the observations, processes, and modeling of climate changes from interannual to centennial time scales. He also has particular expertise in El Niño, the hydrological and energy cycles, hurricanes and storms, and climate change. Trenberth has served on many national and international committees including National Research Council/National Academy of Science committees, panels and/or boards; co-chairing the international Climate Variability and Predictability (CLIVAR) Scientific Steering Group of the World Climate Research Programme (WCRP) from 1996 to 1999 and serving as a member and officer of the Joint Scientific Committee that oversees the WCRP as a whole from 1998 to 2006; chairing the WCRP Observations and Assimilation Panel from 2004 to 2010; and chairing the Scientific Steering Group of GEWEX: the Global Energy and Water Exchanges Project of WCRP from 2010 to 2014. Trenberth has been involved in global warming science and extensively involved in the Intergovernmental Panel on Climate Change (IPCC) scientific assessment activity as a lead author of individual chapters, the Technical Summary, and Summary for Policy Makers (SPM) of Working Group (WG) I for the Second, Third and Fourth Assessment Reports (SAR, TAR and AR4; IPCC 1996, 2001, 2007). He was a Coordinating Lead Author for the SAR and AR4, and in the latter led Chapter 3 that dealt with observations of the surface and atmospheric climate change. He was also a Review Editor of the Fifth IPCC Assessment Report (AR5) in 2013. 8