Arctic Climate Emergency
The 2C target is certain
Arctic feedback
planetary catastrophe
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We all depend on the Arctic.. .
The Arctic regulates our climate, provides a home for wildlife, livelihoods,
and gives food to us all. (WWF)
PIOMAS
sea ice volume
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ALERT 23 July 2013 New UN climate change deal “may not be feasible” by 2015 say world powers.
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May 2013 Science
Very high Arctic climate sensitivity
Arctic Health
Research
Permafrost thaw under warming - far worse than imagined Paper Feb 2013
We are in a state of planetary emergency
James Hansen 19 Sept 2012 - repeating his emergency warning of 2008, in response to the 2012 summer sea ice record low.
METHANE FEEDBACK RUNAWAY CLIMATE CHANGE
In addition to the warming effect of current forcing and emissions, methane plays a role in climatic feedback mechanisms that can exacerbate warming and even lead to abrupt, catastrophic climate change in the future. This risk is primarily associated with the rapid release of carbon stores in the Arctic.
A major release of Arctic methane would have a devastating impact on the global climate, and evidence indicates it has played a role in past warming events in the paleoclimate record. J. Stolaroff et al Environ. Sci. Technol. July 2012.
Arctic snow & summer sea ice albedo cooling is the 'air conditioner' of the Northern hemisphere
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NORTHERN HEMISPHERE FOOD SECURITY
The Arctic snow and summer sea ice cooling albedo is the 'air conditioner' of the entire Northern Hemisphere.
Its loss will affect the world's best food producing regions with increased climate variability, extreme heat and drought.
IPCC 2007: Arctic
... components of the terrestrial cryosphere and hydrology are increasingly being affected by climate change
These changes will have cascading effects on key regional bio-physical systems and cause global climatic feedbacks
Arctic summer sea ice rapid melt- past tipping point
Arctic albedo cooling rapid decline
Sustained feedback on atmospheric
Methane increase in 25 May 2013.
September 2012 Scientific American Arctic Sea Ice: What, Why and What Next
"The fall-off in ice volume is so fast that it is going to bring us to zero very quickly. 2015 is a very serious prediction and I think I am pretty much persuaded that , that's when it will happen."
— Professor Peter Wadhams, Leading Arctic Expert, Cambridge University, January 2012
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