Since Wednesday, the ice cap has melted about 8 billion tonnes every day, double the average rate during the summer period, warn glaciologists. Unusual temperatures of over 20 degrees, with local records, were recorded in the north of the country.

The immense volume of water melted over the past three days in Greenland “would be enough to cover the entire surface of Florida with five centimeters of water.” This is the worrying observation this Saturday by the glaciologists of the Polar Portal, a modeling tool managed by Danish research institutes. Since Wednesday, the ice cap that covers the vast arctic territory has melted by around 8 billion tonnes every day, double the average rate during the summer period.

A heat wave in Greenland, with temperatures more than ten degrees above seasonal norms, this week caused an episode of “massive” melting of the Greenlandic ice sheet, experts have warned. Unusual temperatures of over 20 degrees, with local records, have been recorded in northern Greenland in recent days, according to the Danish meteorological institute DMI.

Greenland’s daily melting record, which dates to summer 2019, has not been broken, but the part of Greenlandic territory where the ice has melted is larger than two years ago, the site said. arctic surveillance.

Second ice cap after Antarctica, with an area of ​​nearly 1.8 million square kilometers, the ice sheet covering Greenland is of concern to scientists, as Arctic warming is three times faster than elsewhere in the world. Its decline, which began several decades ago, has accelerated since 1990 and continues to get carried away.

According to a European study published in January, the melting of the Greenland icecap should contribute to the general rise in the level of the oceans to the height of 10 to 18 centimeters by 2100, or 60% faster than the previous estimate. The Greenlandic cap contains in total enough to raise the oceans by 6 to 7 meters.

Due to a relatively cool start to summer with snow and rain, the ice cap’s decline in 2021 is still within the historical average for the time being, according to Polar Portal. The melting period extends from June to early September.

Ref: https://www.lesechos.fr