Greenland ice sheet is melting much faster
Until a few days ago scientists were convinced that Greenland was suffering defrost a 275 billion kilograms of ice per year rate. New research published in the journal Science Advances this week show that the reality is much worse than was thought.
Scientists estimate the loss of ice based on satellite images that show the changes in the Earth’s surface, combined with some calculations used to offset “glacial isostatic adjustment,” a phenomenon where the earth’s crust rises after large amounts of ice have melted.
In the study now published, a team of scientists used a GPS sensor network need to try more precisely how fast the Earth is to recover these losses. The team initially concluded that the previous method of compensation was not the right thing, being including underestimating the thaw in values amounting to 20 million tons of ice per year. In fact, Greenland is experiencing losses far superior to what was thought, on average close to 295 million tons of ice lost between 2003 and 2013.
Although for the least understood this difference in values may not seem so significant, these figures have a direct impact on rising sea levels. Calculate the maximum precision the ice loss values is a key factor in predicting the effects of long-term climate change.