PIOMAS
sea ice volume

Crops

Daily NH snow cover
Rutgers Snow lab

Crops

VIDEO
Arctic Emergency:
Scientists Speak on
Global Warming

Dec 2016 Methane Hydrate: ?cause
of Earth's greatest mass extinction

Greenland
ice sheet
deep ocean conveyer
Sea level rise

NSIDC National Snow
and Ice Data Center

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Image NASA Eyes Earth

We all depend on the Arctic.. .
The Arctic regulates our climate, provides a home for wildlife, livelihoods, and food. (WWF)

The Arctic as switched from a net carbon sink to source (NOAA 2016)

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March 2015 Research Arctic sea ice is 'thinning dramatically'

The sharp decline in summer Arctic sea ice is unprecedented, and consistent with human-induced climate change (Climate Change in the United States USGC May 2014 )

Arctic has switched from carbon sink to source. NOAA Arctic Report Card Dec 2016...

2014 Climate Action Network Int Emergency emissions response

We are at risk of pushing our climate system toward abrupt, irreversible change
What we know AAAS March 2104

We are in a state of planetary emergency (due to Arctic sea ice tipping point)
James Hansen 19 Sept 2012 - repeating his emergency warning of 2008, in response to the 2012 summer sea ice record low.

May 2013 Science
Very high Arctic climate sensitivity

Permafrost thaw under warming - far worse than imagined Paper Feb 2013

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Arctic snow & summer sea ice albedo cooling is the 'air conditioner' of the Northern hemisphere

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.

 N.H 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.

April 2014 NRC
Arctic Matters- Global impacts

IPCC AR5 2014 WG2 SPM p. 15. ‘Examples that could lead to substantial impact on climate [i.e., amplifying carbon feedback] are the boreal-tundra Arctic system... carbon stored in the terrestrial biosphere (e.g., in peatlands, permafrost, and forests)'
IPCC AR4 2007 These [Arctic] changes will have cascading effects on key regional bio-physical systems and cause global climatic feedbacks

Arctic Health Research

Arctic News blog

Arctic summer sea ice rapid melt- past tipping point

Arctic albedo cooling rapid decline

Sustained feedback on atmospheric

Methane increase in 25 May 2013.
Arctic methane accelerating

September 2012 Scientific American Arctic Sea Ice: What, Why and What Next