Satellites map shrinking ice sheets

Ice caps and glaciers in Greenland and Antarctica shed 150 billion tons of ice annually from 2003 to 2010 according to the world’s first comprehensive satellite study of glacial melt and ocean levels.

Two GRACE - Gravity Recovery and Climate Experiment - satellites traveled around the earth in tandem 16 times a day. The satellites measured changes in the earth’s gravity field caused by changes in the planet’s mass, including ice sheets and oceans.

Data gathered from the satellites shows that the earth’s ocean have risen 0.4 millimeters annually.

Read more at University of Colorado, Boulder