U.S. Global Change Research Program – Climate Science Special Report (CSSR)

Read the Draft of the Climate Change Report



A final draft report by scientists from 13 federal agencies concludes that Americans are feeling the effects of climate change right now. The report was completed this year and is part of the National Climate Assessment, which is congressionally mandated every four years. AUG. 7, 2017

Climate Science Special Report – Public Comment Period

The U.S. Global Change Research Program (USGCRP) seeks public comment on the third-order draft of its Climate Science Special Report (CSSR). This special report provides an update to the physical climate science presented in the Third National Climate Assessment (NCA3) released in 2014, specifically Chapter 2 and Appendices 3 and 4. The draft CSSR provides updated climate science findings and projections, and is an important input to the authors of the next quadrennial NCA (NCA4), expected in 2018.

The CSSR Public Comment Period runs from 15 December 2016 – 3 February 2017 (revised). The draft CSSR is also undergoing a concurrent peer review by the National Academies. A revised draft based on these reviews will undergo a final Federal interagency clearance process.

All comments must be input within the USGCRP Review and Comment System, via an online mechanism or an off-line spreadsheet for later upload. To register as an expert reviewer, click here and log in using existing credentials or by establishing an account. A link under the ‘Documents Available for Public Review’ banner will become active, routing users to review terms, background information, the CSSR draft itself, and instructions.

The special report is a DRAFT assessment and does not represent an approved product of the USGCRP; as such, the draft CSSR should not to be cited, quoted, or distributed other than to facilitate participation in this public comment process.

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