Nca2023.globalchange.gov

Fifth National Climate Assessment

WEBThe Fifth National Climate Assessment is the US Government’s preeminent report on climate change impacts, risks, and responses. It is a congressionally mandated …

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URL: https://nca2023.globalchange.gov/

Fifth National Climate Assessment Downloads

WEBThe Fifth National Climate Assessment is the US Government’s preeminent report on climate change impacts, risks, and responses. It is a congressionally mandated …

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Fifth National Climate Assessment, Front Matter

WEBThe Fifth National Climate Assessment is the US Government’s preeminent report on climate change impacts, risks, and responses. It is a congressionally mandated …

Category:  Health Go Health

Fifth National Climate Assessment, Chapter 15: Human Health

WEB15. Human Health. Climate change is harming physical, mental, spiritual, and community health through the increasing frequency and intensity of extreme events, higher …

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Fifth National Climate Assessment, Chapter 14: Air Quality

WEBGood air quality is vital to human health and the environment. Ozone and fine particulate matter (PM 2.5) are air pollutants with widespread health and environmental effects that …

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Fifth National Climate Assessment, Chapter 27: Northwest

WEBThe Fifth National Climate Assessment is the US Government’s preeminent report on climate change impacts, risks, and responses. It is a congressionally mandated …

Category:  Health Go Health

Fifth National Climate Assessment APPENDIX 4. Indicators

WEBThe Importance of Indicators. To evaluate the impacts of climate change, it is essential to first understand the many ways in which our climate is changing. Indicators characterize …

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Built Environment, Urban Systems, and Cities

WEB12. Built Environment, Urban Systems, and Cities. The built environment and cities are major drivers of climate change. Urban development patterns can exacerbate climate …

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Report Key Messages

WEBObservations show an increase in the severity, extent, and/or frequency of multiple types of extreme events. Heatwaves have become more common and severe in the West since …

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Fifth National Climate Assessment, Chapter 29: Alaska

WEBAlaska is warming two to three times faster than the global average. 1, 2 The physical and ecological effects of warming are evident around the state (Figures 29.1, 29.11 ). …

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Focus on COVID-19 and Climate Change

WEBLessons from COVID-19 for Managing Climate Change. In 2020, COVID-19 lockdowns reduced transportation and electricity generation, decreasing annual US emissions of …

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Fifth National Climate Assessment, Chapter 28: Southwest

WEBChapter 28 of the Fifth National Climate Assessment. Climate change is threatening water resources, increasing challenges to food and fiber production, and compromising human …

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Fifth National Climate Assessment, Chapter 24: Midwest

WEBThe climate of the Midwest has warmed since the first half of the 20th century, and annual precipitation has increased (Figure 2.4).Sub-annual changes, such as the recent lack of …

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Hawai’i and US-Affiliated Pacific Islands

WEB30. Hawai'i and US-Affiliated Pacific Islands. Climate change—especially sea level rise, altered rainfall patterns, and rising ocean and air temperatures—impairs access to clean …

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Ocean Ecosystems and Marine Resources

WEBThe ocean supports diverse and productive marine ecosystems that provide innumerable benefits to the United States. Fishing, recreation and tourism, energy, shipping, and …

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Focus on Compound Events

WEBHeat, drought, and wildfires: A series of compound events between 2020 and 2021 stressed communities and ecosystems across the western US and caused economic damages …

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Land Cover and Land-Use Change

WEB6. Land Cover and Land-Use Change. Changes in climate and land use affect the resilience of land ecosystems. Extreme rain events, droughts, high temperatures, fires, and floods …

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