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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). 

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

 

Other Popular Reports

AMAP Climate Change Update 2019

Climate Change
An Update to Key Findings of Snow, Water, Ice and Permafrost in the Arctic (SWIPA) 2017. Drawing and building on the findings of AMAP’s Snow, Water, Ice and Permafrost in the Arctic (SWIPA) 2017 assessment, this document provides updated observations, information from other recent assessments, and conclusions from the latest reviews of Arctic trends and indicators. The pace of change in the Arctic is so rapid that new records are being set annually, and each additional year of data strengthens the already compelling evidence of a rapidly changing Arctic.

Report-in-Brief: 2nd State of the Carbon Cycle Report (SOCCR2)

The Report-in-Brief includes plain-language highlights and the technical executive summary.
The Report-in-Brief includes plain-language highlights and the technical executive summary. The Second State of the Carbon Cycle Report (SOCCR2) provides a current state-of-the-science assessment of the carbon cycle in North America and its connection to climate and society. Information from the report is relevant to climate and carbon research as well as to management practices in North America and around the world.

AMAP Assessment 2018: Biological Effects of Contaminants on Arctic Wildlife and Fish

Arctic, Wildlife and Fish
This assessment report presents the results of the 2018 AMAP Assessment of the Biological Effects of Contaminants on Arctic Wildlife and Fish. The assessment updates information presented in the AMAP POP's assessment delivered in 2009, specifically with respect to information on biological effects of organohalogenated compunds (OHCs), and the AMAP assessment of Mercury in the Arctic that was delivered in 2011.

AMAP Assessment 2018: Arctic Ocean Acidification

Arctic Ocean Acidification
This assessment report presents the results of the 2018 Arctic Monitoring and Assessment Programme (AMAP) assessment of Arctic Ocean Acidification . This is the second such assessment dealing with ocean acidification from an Arctic-wide perspective , and complements several assessments that AMAP has delivered over past years concerning the effects of climate change on Arctic ecosystems and people.

2nd State of the Carbon Cycle Report (SOCCR2)

The Second State of the Carbon Cycle Report (SOCCR2) provides a current state-of-the-science assessment of the carbon cycle in North America and its connection to climate and society.
The Second State of the Carbon Cycle Report (SOCCR2) provides a current state-of-the-science assessment of the carbon cycle in North America and its connection to climate and society. Information from the report is relevant to climate and carbon research as well as to management practices in North America and around the world.

Overview: Fourth National Climate Assessment Volume II: Impacts, Risks, and Adaptation in the United States

The Overview is a summary of the findings of NCA4 Vol. II, as presented in Chapter 1 of the full report.
The Overview is a summary of the findings of NCA4 Vol. II, as presented in Chapter 1 of the full report. Volume II of the Fourth National Climate Assessment focuses on the human welfare, societal, and environmental elements of climate change and variability for 10 regions and 18 national topics, with particular attention paid to observed and projected risks, impacts, consideration of risk reduction, and implications under different mitigation pathways. Where possible, NCA4 Vol. II provides examples of actions underway in communities across the United States to reduce the risks associated with

Informe Resumido: Volumen II de la Cuarta Evaluación Nacional del Clima: Impactos, Riesgos, y Adaptación en los Estados Unidos

Volumen II de la Cuarta Evaluación Nacional del Clima (NCA4, por sus siglas en inglés) se centra en los elementos del bienestar humano, sociales, y ambientales del cambio climático y la variabilidad para las 10 regiones y los 18 tópicos nacionales, con atención especial a los riesgos observados y proyectados, la consideración de la reducción de riesgos, y las consecuencias de distintas trayectorias de mitigación. Donde era posible, el Volumen II de la NCA4 presenta ejemplos de acciones en progreso en comunidades dentro de los Estados Unidos para reducir los riesgos asociados con el cambio

Report-in-Brief: Fourth National Climate Assessment Volume II: Impacts, Risks, and Adaptation in the United States

The Report-in-Brief consists of the NCA4 Vol. II Front Matter, Overview, and Executive Summaries of each chapter.
The Report-in-Brief consists of the NCA4 Vol. II Front Matter, Overview, and Executive Summaries of each chapter. Volume II of the Fourth National Climate Assessment focuses on the human welfare, societal, and environmental elements of climate change and variability for 10 regions and 18 national topics, with particular attention paid to observed and projected risks, impacts, consideration of risk reduction, and implications under different mitigation pathways. Where possible, NCA4 Vol. II provides examples of actions underway in communities across the United States to reduce the risks

Accomplishments of the U.S. Global Change Research Program

Accomplishments of the U.S. Global Change Research Program
Established under the Global Research Act of 1990, the U.S. Global Change Research Program (USGCRP) has provided strategic planning and coordination to 13 participating federal agencies working to advance the science of global environmental change. This new report highlights notable accomplishments of the program, both in through its coordinating work and the many synthesis and assessment products it has published to share research findings with decision makers and the public. One of the first priorities of the program was to address the need for a global observational system. Today there is