The NCA4 Volume II: Impact, Risks, and Adaptation in the United States, released in November 2018, builds on the NCA4 Volume I: Climate Science Special Report (CSSR), published in 2017. The CSSR provides in-depth analysis on the foundational physical science of climate change upon which much of the assessment of impacts in Volume II is based.
This page provides quick access to relevant NCA4 links, including the full reports, as well as executive summaries, summary findings, reports in brief, SE CASC NCA4 blog posts, and other related publications. Hard copies of these materials can be ordered here from the U.S. Global Change Research Program website.