Temperatures in Greenland soared to record highs earlier this week, in some places up to 50 degrees above normal. Scientists say this early warm spell could make its ice sheet more vulnerable to melting events this summer. Recent summers have seen record melting of the massive ice sheet, which is the world's largest contributor to sea level rise, outstripping the Antarctic ice sheet and mountain glaciers. "It was certainly a very unusual event to have such a high temperature in the middle of winter," Ruth Mottram, a climatologist at the Danish Meteorological Institute, wrote in an email. "This week really set a March record." This latest warm spell in Greenland pushed the temperature in its capital Nuuk up to 59.4 degrees (15.2 degrees Celsius) on Sunday, according to climate expert Maximilian Herrera warmest recorded in March or April. Scientists from the Danish Meteorological Institute confirmed the record, saying the temperature surpassed the previous March record of 55.7 degrees (13.2 degrees Celsius) in 2016 and the previous April record of 58.2 degrees (14.6 degrees Celsius) in 2019