NASAさんのインスタグラム写真 - (NASAInstagram)「❄️Glaciers in southeast Greenland are changing rapidly. My name is Christopher Shuman and I study ice and glaciers for NASA, here at Goddard’s Cryospheric Sciences Laboratory. I wanted to tell you about these breathtaking images from our Landsat satellites. This image is a powerful visualization of nearly five decades of change to the ice sheet in this part of East Greenland. Not only can you clearly see the significant retreat of the calving fronts of several glaciers, you can also see the increased darker color of the ice as major melt events remove snow and compacted snow called firn to reveal bare ice across the ice sheet's edge. There’s a lot more bare rock visible now, which used to be covered with ice. All these little glaciers are all getting slammed, as well as the bigger ones like Helheim, Fenris and Midgard. There are scores of examples of change just in this one area. #nasa #ice #glacier #science」9月17日 4時15分