University of Copenhagen study says Greenland's glaciers melting at five times previous rates over the last 20 years-Global warming has increased the speed at which glaciers in Greenland are melting fivefold over the last 20 years, according to scientists from the University of Copenhagen.A study of a thousand glaciers in the area showed the rate of melting has entered a new phase over the last two decades, Anders Anker Bjørk, assistant professor at the Department of Geosciences and Natural Resource Management at the University of Copenhagen, told Reuters."There is a very clear correlation between the temperature we experience on the planet and the changes we observe in how rapidly the glaciers are melting," Dr Bjørk said.  Greenland's ice melt is of particular concern, as the ancient ice sheet holds enough water to raise sea levels by at least 6 metres if it were to melt away entirely. A study of a thousand glaciers in the area showed the rate of melting has entered a new phase over the last two decades, Anders Anker Bjørk, assistant professor at the Department of Geosciences and Natural Resource Management at the University of Copenhagen, told Reuters. "There is a very clear correlation between the temperature we experience on the planet and the changes we observe in how rapidly the glaciers are melting," Dr Bjørk said.Greenland's ice melt is of particular concern, as the ancient ice sheet holds enough water to raise sea levels by at least 6 metres if it were to melt away entirely. The glaciers on average decrease by 25 metres annually, compared with 5-6 metres two decades ago. Scientists reached their conclusion after studying the development of the glaciers over 130 years through satellite imagery and 200,000 old photos.The University of Copenhagen said the study was the most comprehensive monitoring of Greenland's glaciers to date. Only one of the country's 22,000 glaciers has been monitored continuously since the mid-1990s. Others seemed unaffected by rising temperatures just a few years ago.  https://www.abc.net.au/news/2023-11-13/greenland-ice-sheet-glacier-research/103097030