It has been melting "persistently" over the past four months, which have recorded all time temperature highs, according to Ruth Mottram, a climate scientist with Danish Meteorological Institute.
Although Greenland's ice sheets melt every summer, this year's melting down season could trigger one of country's biggest ice melts since 1950. Moreover, the melt began earlier this week, which continued till Thursday.
Following months of record temperatures, scientists say that Greenland's ice sheet experienced its biggest melt of the summer on Thursday, losing 11 billion tons of surface ice to the ocean. The main reason is high temperature, and warm weather is going to rise for a few more days in Greenland.
This July alone, Greenland's ice sheet lost 197 billion tons of ice - the equivalent of around 80 million Olympic swimming pools - according to Mottram. But the scenario is opposite now because Greenland ice landscapes have 11 billion tons of ice on August 1.
The world's largest island, Greenland, is a semi-autonomous Danish territory between the Atlantic and Arctic oceans.
Greenland has also been battling a slew of Arctic wildfires, something that Mottram said was uncommon in the past.
Video from science journalist Laurie Garrett went viral, showing melt water gushing under a bridge in Kangerlussiauq, a small town in western Greenland at the eastern end of a deep fjord.
That's as far back as data about the ice sheet's daily mass loss has been recorded.
Free-floating ice captured near Ilulissat, Greenland.
"These kind of heatwaves are weather events and can occur naturally, but studies have shown that both the frequency and intensity of these heatwaves have increased due to global warming", Sparrow said.
During the Arctic Summit in April, his Secretary of State Mike Pompeo heralded the melting of the sea ice as an economic opportunity: "Steady reductions in sea ice are opening new passageways and new opportunities for trade", he said during a speech on the sidelines of the summit in Finland.
"When people talk about the average global temperature increasing by a little more than 1 degree (Celsius), that's not a huge amount to notice if you're sitting in Hamburg or London, but that's a global average and it's much greater in the polar regions", he said.