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Reports Library

The Reports Library features scientific assessments, annual reports, strategic research plans, and other resources produced by USGCRP and the collaborative efforts of our member agencies. Select reports by other authoritative scientific bodies with whom we work, such as the Intergovernmental Panel on Climate Change (IPCC) and the National Research Council (NRC), are also accessible here. Most reports are available for download (open and click View); some can be ordered in print free of charge (open and click Add to Cart). 

Please note that we are currently experiencing shipping delays of at least two weeks. Thank you for your patience.

Fourth National Climate Assessment Vol I + II

The Fourth National Climate Assessment (NCA4), completed in November 2018, is a comprehensive and authoritative report on climate change and its impacts in the United States. 
NCA4 Vol II: Impacts, Risks, and Adaptation in the United States
Explore on the web
Download the report and related materials
View or request a free copy of the Overview
View or request a free copy of the Report-in-Brief
Ver o solicitar una copia impresa gratuita del Informe Resumido 
NCA4 Vol I: Climate Science Special Report
Explore on the web
Download the report and related materials
View or request a free copy of the Executive Summary

 

Other Popular Reports

  • Our Changing Planet: The U.S. Global Change Research Program for Fiscal Year 2021
  • 2nd State of the Carbon Cycle Report (SOCCR2)
  • The Impacts of Climate Change on Human Health in the United States: A Scientific Assessment
  • The National Global Change Research Plan 2012-2021: A Triennial Update
  • National Global Change Research Plan 2012–2021

Potential Impacts of Climate Change on U.S. Transportation

Potential Impacts of Climate Change on U.S. Transportation

This report provides an overview of the scientific consensus on the current and future climate changes of particular relevance to U.S. transportation, including the limits of present scientific understanding as to their precise timing, magnitude, and geographic location; identifies potential impacts on U.S. transportation and adaptation options; and offers recommendations for both research and actions that can be taken to prepare for climate change.

SAP 1.3. Reanalysis of Historical Climate Data for Key Atmospheric Features: Implications for Attribution of Causes of Observed Change [Brochure]

Findings, Summary, and Frequently Asked Questions of the U.S. Climate Change Science Program Synthesis and Assessment Report 1.3: Reanalysis of Historical Climate Data for Key Atmospheric Features: Implications for Attribution of Causes of Observed Change.

SAP 1.3: Reanalysis of Historical Climate Data for Key Atmospheric Features: Implications for Attribution of Causes of Observed Change

Reanalysis of Historical Climate Data for Key Atmospheric Features: Implications for Attribution of Causes of Observed Change. A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research

SAP 2.4. Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure

Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure. A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research.

SAP 2.4. Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation Exposure [Brochure]

Findings, Summary, and Frequently Asked Questions of the U.S. Climate Change Science Program Synthesis and Assessment Report 2.4: Trends in Emissions of Ozone-Depleting Substances, Ozone Layer Recovery, and Implications for Ultraviolet Radiation.

SAP 3.1. Climate Models: An Assessment of Strengths and Limitations

Climate Models: An Assessment of Strengths and Limitations. A Report by the U.S. Climate Change Science Program.

SAP 3.2. Climate and Airborne Pollutants [Brochure]

Climate Projections Based on Emissions Scenarios for Long-Lived and Short-Lived Radiatively Active Gases and Aerosols. Findings and Summary.

SAP 3.2. Climate Projections Based on Emissions Scenarios for Long-Lived and Short-Lived Radiatively Active Gases and Aerosols.

Climate Projections Based on Emissions Scenarios for Long-Lived and Short-Lived Radiatively Active Gases and Aerosols. A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research.

SAP 3.3. Weather and Climate Extremes in a Changing Climate

Weather and Climate Extremes in a Changing Climate. Regions of Focus: North America, Hawaii, Caribbean, and U.S. Pacific Islands. A Report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research.

SAP 3.3. Weather and Climate Extremes in a Changing Climate [Brochure]

Weather and Climate Extremes in a Changing Climate. Findings and Summary.

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