Listen: As Greenland melts, something strange is happening to the ice sheet
"Twenty Greenland's melting ice sheet is contributing to a rise in sea levels that could threaten millions in low lying areas situation became more urgent this summer when eleven billion tons of ice melted in one day CBS this morning soft tone reports. ice bergs broken off glaciers field the words. ice melting here in Greenland is affecting sea levels around the world. all of the Greenland ice sheet melted sea levels could rise by twenty three feet world why the chopper delta hell hind glacier which holds enough frozen water to fill the entire state of Pennsylvania a foot deep. you can see the camp now scientists are perched at the glaciers edge that. and why use David Holland is wife Denise who manages logistics people say follow the money well this is a story really about follow the warm water water melts ice quicker than here and so the ocean can melt this ice sheet much faster than the year Denise Holland took this video showing a giant piece of hell hime glacier breaking off for calving last summer the ice chunk was so big you could stretch from lower Manhattan to mid town in New York City it was huge chunks small chunks everything just just broke apart in this one big jumble of ice this is a radar detector we're calling Brady in why you team set up radar equipment did peers into the glacier to measure its movement and thickness icy surface is deceiving. one comes up here doesn't see a problem right and so on the potential problem is one we put our probes down in this field down to the bottom and we detect large volumes of very warm salty water so as you know that could melt the ice at the end that's not sustainable Greenland's ice sheet shed around eleven billion tons of surface ice in just one day in August that's enough to fill around four point four million Olympic size swimming pools the rest a sin may European coastal pollution Greenland says they're feeling climate change with more ferocious storm so how is just noise. because of this extreme weather because of the wind because a strong wind. in nearby in the picturesque port town of to see lack this is all in you would cultures is all in your grass Mister Olson took freelance work at this museum of any would culture is winter sport adventure with business had a shorter season last year was extremely good we have a lot of snow a lot of ice we were able to do dog sitting all the way into the first week of June this year I had to close down my business for wind activities in the middle of April summer came sooner someone came very much sooner coming off the ice sheet in winter and the glacier in David Holland and his team have been surprised to learn just how finicky the atmosphere is people say climate will change by degree or something in the tropics I don't think that matters but when you're at the freezing point. minus after the blows freezing plus have to be above is melting one degrees everything. collecting data to understand what is happening scientists can then tackle the question"