Reports & Assessments

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.

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

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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

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View or request a free copy of the Executive Summary

Other Popular Reports

The National Climate Assessment summarizes the impacts of climate change on the United States, now and in the future. A team of more than 300 experts guided by a 60-member Federal Advisory Committee produced the report, which was extensively reviewed by the public and experts, including federal agencies and a panel of the National Academy of Sciences. The report can be explored interactively at http://nca2014.globalchange.gov.

The 148-page Highlights book presents the major findings and selected highlights from Climate Change Impacts in the United States: The Third National Climate Assessment. The Highlights report is organized around the National Climate Assessment’s 12 Report Findings, which take an overarching view of the entire report and its 30 chapters.

This 20-page booklet provides a high-level compendium of Climate Change Impacts in the United States: The Third National Climate Assessment. The Overview covers the most important impacts at the national level but does not attempt to provide a comprehensive summary of the entire assessment.

IPCC Climate Change 2013: Summary for Policymakers

The Working Group I contribution to the IPCC’s Fifth Assessment Report (WGI AR5) provides a comprehensive assessment of the physical science basis of climate change .

The Working Group I contribution to the IPCC Fifth Assessment Report (WGI AR5) provides a comprehensive assessment of the physical science basis of climate change . Here, the Working Group I report is summarized for both technical and policy audiences.

The National Climate Assessment (NCA) Report Series summarizes regional, sectoral, and process-related workshops and discussions being held as part of the Third NCA process. The workshop on scenarios for research and assessment of our climate future was held in Arlington, Virginia on December 6-8, 2010. Volume 6 of the NCA Report Series summarizes the discussions and outcomes of this workshop.

20-page Highlight Booklet of the Global Climate Change Impacts in the United States. A report of the U.S. Global Change Research Program. Published in 2009.

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

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.

IPCC Climate Change 2001. IPCC Third Assessment Report [CD]

This CD contains all four volumes of the IPCC Third Assessment Report in HTML and PDF formats.

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Reports Library

Fourth National Climate Assessment Vol I + II

NCA4 Vol II: Impacts, Risks, and Adaptation in the United States

NCA4 Vol I: Climate Science Special Report

Other Popular Reports

Climate Change Impacts in the United States: The Third National Climate Assessment

Highlights of Climate Change Impacts in the United States: The Third National Climate Assessment

Overview of Climate Change Impacts in the United States: The Third National Climate Assessment

IPCC. Climate Change 2013: The Physical Science Basis

IPCC. Climate Change 2013: The Physical Science Basis - Summary for Policymakers, Technical Summary and Frequently Asked Questions

National Climate Assessment - Scenarios for Research and Assessment of Our Climate Future

Global Climate Change Impacts in the U.S. [Highlights Booklet]

SAP 3.2. Climate and Airborne Pollutants [Brochure]

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

IPCC: Climate Change 2001. IPCC Third Assessment Report [CD]