NCA5 cover page

  • USGCRP

    • Fifth National Climate Assessment (NCA5)

    Published in 2023 by the U.S. Global Change Research Program, the Fifth National Climate Assessment is the U.S. Government's preeminent report on climate change impacts, risks, and responses. It is a congressionally mandated interagency effort that provides the scientific foundation to support informed decision-making across the United States.

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    Chapter Handout

    Slides

    Report Downloads

    Full Report

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    Report in Brief

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    Chapter Downloads

    Front Matter

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    1: Overview

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    2: Climate Trends

    3: Earth Systems Processes

    4: Water

    5: Energy Supply, Delivery, and Demand

    6: Land Cover and Land-Use Change

    7: Forests

    8: Ecosystems, Ecosystem Services, and Biodiversity

    9: Coastal Effects

    10: Ocean Ecosystems and Marine Resources

    11: Agriculture, Food Systems, and Rural Communities

    12: Built Environment, Urban Systems, and Cities

    13: Transportation

    14: Air Quality

    15: Human Health

    16: Tribes and Indigenous Peoples

    17: Climate Effects on US International Interests

    18: Sector Interactions, Multiple Stressors, and Complex Systems

    19: Economics

    21: Northeast

    22: Southeast

    23: US Caribbean

    24: Midwest

    25: Northern Great Plains

    26: Southern Great Plains

    27: Northwest

    28: Southwest

    29: Alaska

    30: Hawai'i and US-Affiliated Pacific Islands

    31: Adaptation

    32: Mitigation

    Focus On

    F1: Compound Events

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    F2: Western Wildfires

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    F3: COVID-19 and Climate Change

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    F4: Risks to Supply Chains

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    F5: Blue Carbon

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    Appendices

    A1: Assessment Development Process

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    A2: Information Quality

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    A3: Scenarios and Datasets

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    A4: Indicators

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    A5: Glossary

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    Public Reviews

    Public Comments and Author Responses for the Zero Order Draft

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    Public Comments and Author Responses for the Third Order Draft

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    Review by National Academies of Sciences, Engineering, and Medicine

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    Narrative Response to the Academies Review

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    Author Responses to National Academies of Sciences, Engineering, and Medicine

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    Other Materials

    Information Quality Guidance

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    Implementation of Federal Guidelines and Best Practices for Highly Influential Scientific Assessments in the Fifth National Climate Assessment

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    Information Quality Act Certification

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    Selection Process for Downscaled Climate Projection Data in the Fifth National Climate Assessment

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    Errata

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    Art x Climate

    Art x Climate Gallery

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