Fifth National Climate Assessment

U.S. Global Change Research Program

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	Download	PDF	PDF (Español)	Chapter Handout	Figures	Slides
Report Downloads	Full Report	Coming soon	Coming soon	-		-
	Overview		Coming soon	-
	Report in Brief		Coming soon	-	-	-
Chapter Downloads	Front Matter	Coming soon	Coming soon	-		-
	1: Overview		Coming soon	-
	2: Climate Trends	Coming soon	Coming soon
	3: Earth Systems Processes	Coming soon	Coming soon
	4: Water	Coming soon	Coming soon
	5: Energy Supply, Delivery, and Demand	Coming soon	Coming soon
	6: Land Cover and Land-Use Change	Coming soon	Coming soon
	7: Forests	Coming soon	Coming soon
	8: Ecosystems, Ecosystem Services, and Biodiversity	Coming soon	Coming soon
	9: Coastal Effects	Coming soon	Coming soon
	10: Ocean Ecosystems and Marine Resources	Coming soon	Coming soon
	11: Agriculture, Food Systems, and Rural Communities	Coming soon	Coming soon
	12: Built Environment, Urban Systems, and Cities	Coming soon	Coming soon
	13: Transportation	Coming soon	Coming soon
	14: Air Quality	Coming soon	Coming soon
	15: Human Health	Coming soon	Coming soon
	16: Tribes and Indigenous Peoples	Coming soon	Coming soon
	17: Climate Effects on US International Interests	Coming soon	Coming soon
	18: Sector Interactions, Multiple Stressors, and Complex Systems	Coming soon	Coming soon
	19: Economics	Coming soon	Coming soon
	20: Social Systems and Justice	Coming soon	Coming soon
	21: Northeast	Coming soon	Coming soon
	22: Southeast	Coming soon	Coming soon
	23: US Caribbean	Coming soon	Coming soon
	24: Midwest	Coming soon	Coming soon
	25: Northern Great Plains	Coming soon	Coming soon
	26: Southern Great Plains	Coming soon	Coming soon
	27: Northwest	Coming soon	Coming soon
	28: Southwest	Coming soon	Coming soon
	29: Alaska	Coming soon	Coming soon
	30: Hawai'i and US-Affiliated Pacific Islands	Coming soon	Coming soon
	31: Adaptation	Coming soon	Coming soon
	32: Mitigation	Coming soon	Coming soon
Focus On
	F1: Compound Events	Coming soon	Coming soon	-		-
	F2: Western Wildfires	Coming soon	Coming soon	-		-
	F3: COVID-19 and Climate Change	Coming soon	Coming soon	-		-
	F4: Risks to Supply Chains	Coming soon	Coming soon	-		-
	F5: Blue Carbon	Coming soon	Coming soon	-		-
Appendices
	A1: Assessment Development Process	Coming soon	Coming soon	-
	A2: Information Quality	Coming soon	Coming soon	-	-
	A3: Scenarios and Datasets	Coming soon	Coming soon	-
	A4: Indicators	Coming soon	Coming soon	-
	A5: Glossary	Coming soon	-	-	-
Public Reviews	Public Comments and Author Responses for the Zero Order Draft		-	-	-	-
	Public Comments and Author Responses for the Third Order Draft		-	-	-	-
	Review by National Academies of Sciences, Engineering, and Medicine		-	-	-	-
	Narrative Response to the Academies Review		-	-	-	-
	Author Responses to National Academies of Sciences, Engineering, and Medicine		-	-	-	-
Other Materials	Information Quality Guidance		-	-	-	-
	Information Quality Act Certification		-	-	-	-
	Selection Process for Downscaled Climate Projection Data in the Fifth National Climate Assessment		-	-	-	-
Errata	Errata		-	-	-	-

Likelihood

Virtually Certain	Very Likely	Likely	As Likely as Not	Unlikely	Very Unikely	Exceptionally Unlikely
99%–100%	90%–100%	66%–100%	33%–66%	0%–33%	0%–10%	0%–1%

Confidence Level

Very High	High	Medium	Low
Strong evidence (established theory, multiple sources, well-documented and accepted methods, etc.) High consensus	Moderate evidence (several sources, some consistency, methods vary and/or documentation limited, etc.) Medium consensus	Suggestive evidence (a few sources, limited consistency, methods emerging, etc.) Competing schools of thought	Inconclusive evidence (limited sources, extrapolations, inconsistent findings, poor documentation and/or methods not tested, etc.) Disagreement or lack of opinions among experts

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