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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The Plan outlines priorities for research in carbon cycle science, including a substantial expansion in the scope of the field. In addition to reaffirming the need for basic research and for continuing the current areas of research in carbon cycle science, the Plan outlines specific recommendations for new priorities.
America's Climate Choices makes the case that the environmental, economic, and humanitarian risks posed by climate change indicate a pressing need for substantial action now to limit the magnitude of climate change and to prepare for adapting to its impacts.
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.
This workshop focused on monitoring changes in the physical climate system, as part of a series that includes workshops on the impacts of climate change on ecosystems and socioeconomic systems. The workshop was held in Washington, D.C. on March 29-30, 2011.
The workshop on including and developing societal indicators as a part of the 2013 NCA was held in Washington, DC on April 28-29, 2011. Volume 5c of the NCA Report Series summarizes the discussions and outcomes of this workshop.
This workshop focused on techniques for quantitatively valuing climate impacts and adaptation in the context of the upcoming NCA. The workshop was held in Arlington, VA on January 12-13, 2011.
AMAP’s assessment of the impacts of climate change on Snow, Water, Ice and Permafrost in the Arctic (SWIPA) brings together the latest scientific knowledge about the changing state of each component of the Arctic cryosphere.
The workshop on including and conducting vulnerability assessments as a part of the Third NCA was held in Atlanta, Georgia on January 19-20, 2011.
This assessment report details the results of the 2011 AMAP Assessment of Mercury in the Arctic. It builds upon the previous AMAP heavy metals assessments that were presented in 1998* and 2005*.
This report is the seventh 'State of the Arctic Enviorment Report' that has been prepared by AMAP in accordance with its mandate. It presents the results of work conducted during AMAP's fourth phase (2008-2011) in relation to the priority issue of mercury in the Arctic. The assessment described in this report builds upon the previous AMAP assessments of this issue...