Hallo,

eine sehr schöne Übersicht über den Temperaturverlauf in Grönland während der letzten 4000 Jahre findet man hier:

Kobashi / Kawimura / Severinghaus / Barnola / Nakaegawa / Vinther / Johnsen / Box: High variability of Greenland surface temperature over the past 4000 years estimated from trapped air in an ice core.
Geophysical Research Letters. Vol 38. Published 10 November 2011.

Zentrale Aussage: ".......The record indicates that warmer temperatures were the norm in the earlier parts of the past 4000 years, including century - long intervals nearly 1°C warmer than the present decade (2001 - 2010). Therefore we conclude that the current decadal mean temperature in Greenland has not exceeded the envelope of natural variability over the past 4000 years.........climate models project that if anthropogenic greenhouse gas emissions continue, the Greenland temperature would exceed the natural variability of the past 4000 years sometime before the year 2100."

[www.leif.org]

Gruß
KH