Federal Coordinating Lead Authors:
David R. Easterling, NOAA National Centers for Environmental Information
David W. Fahey, NOAA Earth System Research Laboratory
Chapter Lead:
Katharine Hayhoe, Texas Tech University
Chapter Authors:
Sarah Doherty, University of Washington
James P. Kossin, NOAA National Centers for Environmental Information
William V. Sweet, NOAA National Ocean Service
Russell S. Vose, NOAA National Centers for Environmental Information
Michael F. Wehner, Lawrence Berkeley National Laboratory
Donald J. Wuebbles, University of Illinois
Review Editor:
Linda O. Mearns, National Center for Atmospheric Research
Technical Contributors:
Robert E. Kopp, Rutgers University
Kenneth E. Kunkel, North Carolina State University
John Nielsen-Gammon, Texas A&M University
USGCRP Coordinators:
David J. Dokken, Senior Program Officer
David Reidmiller, Director

Our Changing Climate


Process Description

This chapter is based on the collective effort of 32 authors, 3 review editors, and 18 contributing authors comprising the writing team for the Climate Science Special Report (CSSR),208 a featured U.S. Global Change Research Project (USGCRP) deliverable and Volume I of the Fourth National Climate Assessment (NCA4). An open call for technical contributors took place in March 2016, and a federal science steering committee appointed the CSSR team. CSSR underwent three rounds of technical federal review, external peer review by the National Academies of Sciences, Engineering, and Medicine, and a review that was open to public comment. Three in-person Lead Authors Meetings were conducted at various stages of the development cycle to evaluate comments received, assign drafting responsibilities, and ensure cross-chapter coordination and consistency in capturing the state of climate science in the United States. In October 2016, an 11-member core writing team was tasked with capturing the most important CSSR key findings and generating an Executive Summary. The final draft of this summary and the underlying chapters was compiled in June 2017.

The NCA4 Chapter 2 author team was pulled exclusively from CSSR experts tasked with leading chapters and/or serving on the Executive Summary core writing team, thus representing a comprehensive cross-section of climate science disciplines and supplying the breadth necessary to synthesize CSSR content. NCA4 Chapter 2 authors are leading experts in climate science trends and projections, detection and attribution, temperature and precipitation change, severe weather and extreme events, sea level rise and ocean processes, mitigation, and risk analysis. The chapter was developed through technical discussions first promulgated by the literature assessments, prior efforts of USGCRP,208 e-mail exchanges, and phone consultations conducted to craft this chapter and subsequent deliberations via phone and e-mail exchanges to hone content for the current application. The team placed particular emphasis on the state of science, what was covered in USGCRP,208 and what is new since the release of the Third NCA in 2014.1


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