GREENLAND — A ‘massive melting event’ has affected Greenland’s ice sheet during a heat wave that has brought temperatures more than twice as hot as seasonal averages, according to Danish researchers cited by Agence France Presse. <br /> <br /> <br />Since Wednesday the ice sheet has melted by close to 8 billion metric tons a day, twice its normal average rate during summer, according to tracking site Polar Portal website, which is run by Danish researchers. <br /> <br /> <br />While this loss of volume was not as extreme as the largest single-day melting event in 2019, the researchers say the area over which melting took place is actually larger than two years ago. <br /> <br />
