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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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.
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...