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).

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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

This report highlights eight years of START’s Africa Global Environmental Change (GEC) Grants Program, focusing on the significance and development of the program for GEC research in Africa and the major accomplishments of grant award recipients from 2004 to 2012.

USGCRP supported several regional workshops in October 2014 as part of the Climate Change Preparedness and Resilience Exercise Series. This brochure was used for the first workshop, which focused on Houston-Galveston, Texas.

USGCRP supported several regional workshops in October 2014 as part of the Climate Change Preparedness and Resilience Exercise Series. This brochure was used for the second workshop, which focused on Colorado.

This publication includes the Summary for Policymakers, Technical Summary, Frequently Asked Questions, and Cross-Chapter Boxes for the Working Group II contribution to the IPCC Fifth Assessment Report.

Ocean acidification is occurring at a rapid and accelerating pace, and the Arctic Ocean is on the frontline of this global change . AMAP’s 2013 assessment of Arctic Ocean acidification provides the first Arctic-wide perspective on today’s progressively increasing seawater acidity.

The 2009 Arctic Marine Shipping Assessment (AMSA) called for the Arctic States to identify areas of heightened ecological and cultural significance in light of changing climate conditions and increasing multiple marine uses. This report identifies those areas.

This workshop focused on developing indicators for ecosystem responses to climate change and integrating observational networks. The workshop was held in Washington, DC on November 30-December 1, 2010.

The Effects of Climate Change on U.S. Ecosystems

Executive Summary of SAP Assessment 4.3, one of a series commissioned by the U.S. Global Change Research Program(USGCRP). It examines how climate changes are affecting agriculture, land resources, water resources and biodiversity in the United States.

Thresholds of Climate Change in Ecosystems. A report by the U.S. Climate Change Science Program and the Subcommittee on Global Change Research.

4-page Companion Brochure of the Global Climate Change Impacts in the United States. A report of the U.S. Global Change Research Program. Published in 2009.

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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

Vistas of African Science: Advancing Knowledge through START's Grants for Global Environmental Change in Africa Program

Regional Climate Change Preparedness and Resilience Exercise Series: Houston-Galveston

Regional Climate Change Preparedness and Resilience Exercise Series: Colorado

IPCC. Climate Change 2014: Impacts, Adaptation, & Vulnerability - Summaries, Frequently Asked Questions, and Cross-Chapter Boxes

Arctic Ocean Acidification Assessment: Summary for Policymakers

Identification of Arctic Marine Areas of Heightened Ecological and Cultural Significance: Arctic Marine Shipping Assessment (AMSA) IIC

National Climate Assessment: Ecological Indicators Workshop Report

Executive Summary: The Effects of Climate Change on U.S. Ecosystems

SAP 4.2. Thresholds of Climate Change in Ecosystems

Global Climate Change Impacts in the U.S. [Companion Brochure]