To clear up all misunderstandings...
The Arctic is warming 2-3 times faster than global average if you look at 60N-90N (Arctic Ocean with neighbouring seas)
The Arctic is warming 6-8 times faster than global average if you look at 75N-90N (Arctic Ocean without neighbouring seas)
The Arctic is warming 2-3 times faster than global average if you look at 60N-90N (Arctic Ocean with neighbouring seas)
The Arctic is warming 6-8 times faster than global average if you look at 75N-90N (Arctic Ocean without neighbouring seas)
When you look at 85N-90N (the pure Arctic) we have to admit the entire zone of the Arctic basin is warming +12 times faster than global average!
And we now know these conditions are comparable to the Mid-Pliocene Arctic conditions.
And we now know these conditions are comparable to the Mid-Pliocene Arctic conditions.
Only global mean temperatures were a little higher: 2°C to 3°C above pre-industrial levels.
But we also know these temperatures are potentially already in our climate system: ice sheet instability, deep-ocean warming, irreversible retreat of marine glacier, SST's & trapped GHG's.
But we also know these temperatures are potentially already in our climate system: ice sheet instability, deep-ocean warming, irreversible retreat of marine glacier, SST's & trapped GHG's.
Mid Pliocene
Arctic SST anomalies:
4°C to 9°C above pre-industrial levels
Sea level:
20 to 25 meters above pre-industrial level
Arctic surface temperatures:
15°C to 25°C above pre-industrial levels
Arctic sea ice (not Antarctic sea ice):
0% to 40% compared to pre-1979 levels
Arctic SST anomalies:
4°C to 9°C above pre-industrial levels
Sea level:
20 to 25 meters above pre-industrial level
Arctic surface temperatures:
15°C to 25°C above pre-industrial levels
Arctic sea ice (not Antarctic sea ice):
0% to 40% compared to pre-1979 levels
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