PHD scientist Ian Bartholomew using a theodolite to measure the speed of the Russell Glacier near Kangerlussuaq, Greenland, Polar Regions

greenland science study climate change global warming glaciation russell glacier glaciology research ice remote equipment tripod theodolite measurement day outdoors close up close ups thodolite glaciers fieldwork measuring polar regions people portraits one person one man only one young man only man men young man young men head and shoulders waist up scientist scientists kangerlussuaq horizontal