Arctic climate feedbacks

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The several Arctic feedbacks to global warming, that can lead to runaway climate change.

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Arctic climate feedbacks

  1. 1. Arctic Feedback LoopsMultiple cascading mutually reinforcing positive Arctic feedbacks, if notprevented, lead to rapid uncontrollable eventually catastrophic globalwarming and climate disruption.This has been called runaway global warming and leads to planetarycatastrophe because there are no negative feedbacks that can stop it.
  2. 2. Arctic +ve (bad) feedbacksArctic +ve feedback:Global warming affects the Arctic in a way that causes more globalwarming.Arctic +ve feedbacks:• Loss of Arctic albedo reflective cooling• Warming peat rich wetlands (methane + some CO2)• Thawing permafrost (methane + some CO2 & nitrous oxide)• Melting sea floor frozen solid methane gas hydrate (methane)
  3. 3. Arctic +ve (bad) feedbacksArctic regional +ve feedback: Loss of Arctic albedo reflective cooling increases:• Warming peat rich wetlands• Thawing permafrost• Melting sea floor frozen solid methane gas hydrate
  4. 4. 3 sources ofArctic albedocooling.• NH snow cover• Greenland ice sheet surface Sea ice• Arctic summer sea ice extent
  5. 5. Arctic ocean Alaska Methane hydrate
  6. 6. Warming Microbes become active – digest organic matter - emit methaneThawed Permafrost Permafrost
  7. 7. Methane hydrate destabilized by warming sea water emits methane

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