Dear Arctic colleagues, We are pleased to announce the launch of the International Arctic Change 2014 Photo Contest.

You may ask yourself why a musk ox first crosses a wide frozen fjord and continues up a frozen high-altitude glacier where it wanders for several days over the Clavering Island in Northeast Greenland. But it does. And this is quite true because last year fourteen musk oxen had satellite transmitters fitted around their necks and researchers in Denmark now receive information every hour on the whereabouts of the oxen in the world’s largest national park.

We spent hours chipping away at the ice to free our equipment! Nevertheless data seem to be sufficient for determining the processes responsible for forming of the local vertical circulation cell....