This appendix is an update to the frequently asked questions (FAQs) presented in the Third National Climate Assessment (NCA3). New questions based on areas of emerging scientific inquiry are included alongside updated responses to the FAQs from NCA3. The answers are based on the U.S. Global Change Research Program’s (USGCRP) sustained assessment products, other peer-reviewed literature, and consultation with experts.
The “Frequently Asked Questions – Appendix 5” publication is available as a downloadable PDF at nca2018.globalchange.gov.