The Greenland Icecap has an area of 1.833.900 km².  The average yearly temperature up there is about –30°C, in July about –10°C.  Its volume is estimated to be 2.600.000 km³, or about 8% of the ice supplies of the earth.  The reigning wind direction is westerly, but is deflected to the southwest on the East Coast by the Coriolis force.  The Piterak-wind in the Angmagssalik Area reaches speeds of 250 km/hour.  The southernmost elevation of the glacier reaches 2760 m above sea level and the northernmost about 3200 m.  Every year, about 630 cubic kilometres of ice are created.  The movement of the ice 100 km from the coast has reached the speed of 160 km a year.  The advance of the glacier snouts is very different, sometimes up to 40 m per day, which is the greatest speed of any glacier tongues in the world