IPCC 5th Assessment WG1 summary

A summary for policy makers was released today. It includes is a clear statement that humans have influenced climate system.

“As the ocean warms, and glaciers and ice sheets reduce, global mean sea level will continue to rise, but at a faster rate than we have experienced over the past 40 years,” said Co-Chair Qin Dahe.

From the summary of thesea level chapter: “There is very high confidence that maximum global mean sea level during the last interglacial period  129,000 to 116,000 years ago) was, for several thousand years, at least 5 m higher than present and high confidence that it did not exceed 10 m above present. During the last interglacial period, the Greenland ice sheet very likely contributed between 1.4 and 4.3 m to the higher global mean sea level, implying with medium confidence an additional contribution from the Antarctic ice sheet. This change in sea level…