At the end of December, we posted about a disturbing report that Greenland’s glaciers are melting 100 times faster than previously calculated. Now, a new study published this week in the journal Nature reveals that Greenland is warmer than it has been in more than 1,000 years, according to new ice core data.
Newly drilled and analyzed ice cores were used to make a chart of proxy temperatures for Greenland running from the year 1000 to 2011. The plot shows temperatures gently sloping cooler for the first 800 years, then wiggling up and down while sloping warmer until a sharp and sudden spike hotter from the 1990s on. One scientist compared it to a hockey stick, a description used for other long-term temperature data showing climate change.