New ice core analysis shows sharp Greenland warming spike

A sharp spike in Greenland temperatures since 1995 showed the giant northern island 2.7 degrees (1.5 degrees Celsius) hotter than its 20th-century average, the warmest in more than 1,000 years, according to new ice core data (Felipe Dana/AP/PA)

A sharp spike in Greenland temperatures since 1995 showed the giant northern island 1.5C hotter than its 20th-century average, the warmest in more than 1,000 years, according to new ice core data.

Until now Greenland ice cores – a glimpse into long-running temperatures before thermometers – had not shown much of a clear signal of global warming on the remotest north central part of the island, at least compared with the rest of the world.