Warm water caused glaciers in Greenland to melt even in winter. This means that in order to accurately simulate sea level rise and glacier melting speed, it is necessary to take into account their melting during the winter, according to the University of California, published in the journal Geophysical Research Letters.
According to UN estimates, humanity has already heated the planet by 1.1°C compared with pre-industrial values (from 1850 to 1900) and 0.2°C higher than in 2011-2015.
Over the past 40 years, the area of Arctic sea ice has been decreasing at a rate of about 12% per decade – with the four lowest values of Arctic ice volume recorded between 2015 and 2019.
In a new study, scientists tried to determine if glaciers melt during the winter in Greenland. To do this, they explored several kilometers of frozen rivers that flow from the ice sheet using radars. In addition, they drilled wells to determine how much water they contained.
The study showed that under the ice layer in the Isortok River there is liquid water that flows from the Isangguat Sermia glacier. This means that glacier melting continues even in winter – and this factor should be taken into account in models for rising sea levels, scientists say.