BEGIN:VCALENDAR VERSION:2.0 PRODID:researchseminars.org CALSCALE:GREGORIAN X-WR-CALNAME:researchseminars.org BEGIN:VEVENT SUMMARY:Paul Holland (British Antarctic Survey) DTSTART:20210630T130000Z DTEND:20210630T140000Z DTSTAMP:20260423T035751Z UID:BAS-PO/21 DESCRIPTION:Title: Melting of the Antarctic Ice Sheet: What is the role of anthropogenic forc ing?\nby Paul Holland (British Antarctic Survey) as part of BAS Polar Oceans Seminar\n\n\nAbstract\nIce loss from the Antarctic Ice Sheet is a s ubstantial source of sea-level rise\, with a large and uncertain future co ntribution. This melting ice is often used as an example of global warmin g\, with an implicit linkage to human activities. However\, the link to a nthropogenic forcing is not clear because the ice sheet may be in an unsta ble configuration\, and the region is subject to large internal climate va riability. In this talk I will summarise the available observations of ic e\, ocean\, and atmosphere in the region\, and then present evidence from climate model simulations. The combined evidence suggests that the ongoing ice loss is partly caused by ice sheet instability and partly by climate forcing. Of the forcing\, part is anthropogenic. As a result of this com bination of factors\, it is not clear how the Antarctic Ice Sheet will res pond to future emissions scenarios.\n LOCATION:https://researchseminars.org/talk/BAS-PO/21/ END:VEVENT END:VCALENDAR