This presentation introduces basic concepts relating to Earth's carbon cycle, how it relates to global climate and changes in both the carbon cycle in the Arctic and some of the ramifications for the rest of the planet.

For a lightning-fast version of some key concepts of this talk, check out The Carbon Crisis in 90 Seconds.

 Dr. Peter Griffith is the founding director of NASA’s Carbon Cycle & Ecosystems Office, and Chief Support Scientist for the Arctic Boreal Vulnerability Experiment (ABoVE), a multi-year field campaign to investigate the socio-ecological impacts of the rapidly changing environment in Alaska and northwestern Canada (http://above.nasa.gov). He also directs the team that supports the Carbon Cycle & Ecosystems Focus Area at NASA HQ (http://cce.nasa.gov); NASA’s Carbon Monitoring System (http://carbon.nasa.gov); and the North American Carbon Program (http://www.nacarbon.org), a component of the U.S. Global Change Research Program.

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