• Open Notice: NCA5 Public Comment Period

    Submit your comments on the chapter outlines of the Fifth National Climate Assessment by February 20, 2022.

  • NCA5 Public Engagement Workshops

    We want to hear from you! Share your thoughts with National Climate Assessment authors.

  • NCA5 Updates

    Learn more about the Fifth National Climate Assessment process and progress, opportunities to engage, and answers to frequently asked questions.

  • Our Changing Planet for Fiscal Year 2021

    Learn about USGCRP's recent accomplishments in our annual report to Congress.

  • Fourth National Climate Assessment Volume II

    Read NCA4 Vol. II: Impacts, Risks, and Adaptation in the United States, USGCRP’s quadrennial assessment of the impacts of climate change in the U.S.

  • 2nd State of the Carbon Cycle Report

    SOCCR2 is a technical assessment of the state of carbon cycle science in North America

  • Climate Science Special Report

    The Climate Science Special Report, Volume I of the Fourth National Climate Assessment (NCA4), assesses the physical science of climate change and provides the foundation for Volume II of NCA4.

  • Melting sea ice is one indicator of climate change

    Indicators of Change

    Indicators communicate key aspects and related effects of the changing climate.