NCA5 cover page

  • USGCRP

    • Fifth National Climate Assessment (NCA5)

    Published in 2023, the Fifth National Climate Assessment is the US 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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