For some reason, it has become hard to locate the various National Climate Assessments (NCAs) that have been produced by the USGCRP over the decades (and it’s pretty hard to find the USGRCP as well…). However, the reports are still accessible if you know where to look. So for future reference, here are all the links (and we’ve downloaded the pdfs locally so that they will always be available here).
NCA1 (2000)
- Full report (via the internet archive) (via gov archive) (local pdf)
NCA2 (2009)
- Full report (via the internet archive) (via gov archive) (local pdf)
NCA3 (2014)
- Full Report (via the NOAA library) (local pdf)
- Climate Science Supplement (via the internet archive) (local pdf)
NCA4 (2017)
- Volume 1 Climate Science Special Report (via the NOAA library) (local pdf)
- Volume 2 Impacts, Risks, and Adaptation in the United States (via the NOAA Library) (local pdf)
NCA5 (2023)
- The NCA5 Atlas (via ESRI)
- Full report (via the NOAA Library) (local pdf)
NCA6
There is no ongoing NCA6 process, even though it is mandated by Congress to be completed over the next few years. We’ll let you know if that changes.