New ice core analysis shows a sharp spike in Greenland temperatures since 1995 – 1.5°C hotter than its 20th-century average, the warmest in more than 1,000 years
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As the various Arctic climate feedbacks show, we are fast approaching the stage when climate change will be playing the tune for us while we stand by and watch helplessly, with our reductions in CO2 emissions having no effect in the face of, say, runaway emissions of methane.
from this article: https://e360.yale.edu/features/as_arctic_ocean_ice_disappears_global_climate_impacts_intensify_wadhams