First open thread reached the 200 comment mark, so it's time for a new one.
Over on the Arctic Sea Ice Forum commenter Espen keeps track of several things related to sea ice and the Greenland Ice Sheet, one of those being the Jakobshavn Glacier - also known as Jakobshavn Isbræ and Sermeq Kujalleq - which I wrote about a bit back in 2010, in 2011 and last year.
It looks like Jakobshavn has retreated another 3 km inland, despite a cold melting season for Greenland:
This time it was the southern branch that retreated most. As NASA's Earth Observatory had it, also back in 2010:
In the winter of 2010, Jakobshavn’s ice front did not re-advance as it usually does, so it began the 2010 melt season in the same location as the 2009 summer melt season. As a result, the glacier had the potential to experience significant retreat during the summer of 2010. The breakup in early July 2010 occurred on the northern tributary to Jakobshavn Glacier. The southern tributary actually drains a larger portion of Greenland’s central ice sheet, so a retreat there could lead to a more substantial ice discharge.
Thank you, Espen!