• JUST RELEASED: 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.

  • Update to the Strategic Plan

    Update to the Strategic Plan

    Read the National Global Change Research Plan 2012–2021: A Triennial Update, a report on the Program's progress since 2012.

  • Melting sea ice is one indicator of climate change

    Indicators of Change

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