Tuesday, February 7, 2023

Greenland’s glaciers melting 100 times faster than previously thought

A group of researchers has revealed in a new study that the glaciers of Greenland they’re melting 100 times faster What has been calculated so far?

A new model published in the journal was used to draw this conclusion Geophysical Research Paperswho believes interactions between ice and water in fjords (a valley excavated by the erosive action of a glacier that was invaded or flooded by the sea).

According to this new mathematical representation, it allows ice to show how eaten on vertical planks at the ends of glaciers in Greenland. The difference is that until now, models developed for Antarctica, where blocks of ice float on seawater, have been used in a different configuration.

According to Kirsten Schultz, lead author of this new study from the Oden Institute for Computer Science and Engineering at the University of Texas at Austin, “There is growing evidence that the conventional approach produces very low melting rates at the vertical fronts of Greenland glaciers.,

This study reveals what researchers already knew, trying to understand Arctic glaciers from information from Antarctica It was not a perfect match.

El Fiordo de Scoresby Sund

However, it is difficult to access the edges of glaciers in Greenland, as they are located at the ends of fjords. Where the hot water removes the ice. This will make itdramatic events“Calving, where chunks of ice the size of buildings drop into the water without warning, creating mini-tsunamis in the process.

Effects of melting glaciers for the planet

On the other hand, researchers led by physical oceanographer Rebecca Jackson of Rutgers University have used robotic boats to get closer For ice rocks, at Leconte in Alaska, as well as at Kangerlussup Sarmia in Greenland.

In their measurements they found that models based on Antarctica underestimate the melting of glaciers”.extremely“, and this has direct implications for how we understand the planet, because the Greenland ice sheet is critical to sea level rise, with enough water Raise its level to six meters.

Greenland Glacier

In addition, the new model analysis considers the most recent data from near-glacier missions, as well as a more realistic understanding of the glaciers’ steep and cliff-like faces. affect ice damageshowing the fastest melting.

With this information, Schulz details, it would be possible to better predict climate change trendsand will be useful for improving current climate models.

Nation World News Desk
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