Scientists studying this phenomenon think that Greenland ice could be the major contributor to changes in the ocean level in the near future.
In the summer of 1809 Sybille cruised off the Greenland ice.
Running low on fuel, all eight force-landed on the Greenland ice cap.
"If the Greenland ice sheet disappeared sea levels around the world would rise by seven metres"
With those few modifications, the sled was well suited for work on the Greenland ice.
In 1966 he was the first man from Finland to cross the Greenland ice on skis and by dog team.
The flare left a trace in Greenland ice in the form of nitrates and beryllium-10, which allow its strength to be measured today.
A separate study has also concluded that most, if not all, the Greenland ice disappeared between the last two ice ages, more than 100,000 years ago.
It was the record of that ice age that seemed to show short-term oscillations similar to those in the Greenland ice.
You can see soot on Greenland ice in satellite photos in September.
