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).
Please note that we are currently experiencing shipping delays of at least two weeks. Thank you for your patience.

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.
This Special Report of the IPCC Working Groups I and II explores the social as well as physical dimensions of weather- and climate-related disasters, considering opportunities for managing risks at local to international scales.
This IPCC Working Group III Special Report assesses existing literature on the future potential of renewable energy for the mitigation of climate change. It covers the six most important renewable energy technologies, as well as their integration into present and future energy systems.
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...
The workshop on planning regional and sectoral assessments as a part of the 2013 NCA was held in Reston, Virginia on November 15-17, 2010.
A report outlining the research needs on the human health effects of climate change.