• NCA5 Draft Prospectus

    Review the draft themes and framework of the Fifth National Climate Assessment through August 10, 2020, or learn more about the assessment's process and progress.

  • 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.

  • Our Changing Planet: USGCRP for Fiscal Years 2018-2019

    Read USGCRP’s annual report to Congress describing recent program accomplishments.

  • Melting sea ice is one indicator of climate change

    Indicators of Change

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