| Email: | dcha@norceresearch.no |
| Office Address: | Jahnebakken 5, 5007 Bergen, Norway |
I am primarily a glaciologist. My research has focused on processes at the base of ice sheets, in particular how meltwater from the ice surface can reach the bed and cause the ice to speed up. More recently I have been working on the past behavior of ice sheets, and especially the response of the Antarctic Ice Sheet to climate warming during a previous warm climate (the Last Interglacial, about 130,000 years ago).
Here we trace meltwater flow paths for nearly 60 km beneath the Greenland Ice Sheet, to find out how water flows beneath ice that is 1 km thick, and how this might affect how the ice sheet responds to increasing melt.
Here we report changes on the surface of the Greenland Ice Sheet over the course of a summer melt season. This includes changes in the distribution of dark 'cryoconite' debris and its associated mircrobial activity, which in turn affect how solar radiation is absorbed by the ice.