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
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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This document presents the policy-relevant findings of the Arctic Monitoring and Assessment Programme's 2015 assessments of persistent organic pollutants, radioactivity, and human health in the Arctic.
This document presents the policy-relevant findings of the Arctic Monitoring and Assessment Programme's 2015 assessments of short-lived climate forcers (methane, black carbon, and ozone).
This Overview Report presents a summary of the first comprehensive assessment of Arctic Ocean Acidification conducted by the Arctic Monitoring and Assessment Programme (AMAP).
The Arctic is undergoing rapid and fundamental change. This report presents an overview of the potential directions of non-climate drivers affecting the Arctic, and explicitly excludes discussion of potential impacts and responses.
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.
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.