Ice caps are simply small versions of ice sheets, measuring in at a maximum area of 50,000 square kilometers (about 19,000 square miles). It's their small and thin stature that makes ice caps more prone to melt in a warming Arctic. Charles Webb of NASA's Goddard Space Flight Center in Greenbelt, Md., explains the importance of monitoring ice caps in the Canadian Arctic A few flights within NASA's Operation IceBridge -- an airborne mission to monitor Earth's polar ice -- are adding to the long-term record of ice cap changes. Such a record can provide insight into ice cap dynamics as well as provide an early-warning indicator of the impacts of climate change. This video is public domain and can be downloaded at: ?http://svs.gsfc.nasa.gov/goto?10739 Like our videos? Subscribe to NASA's Goddard Shorts HD podcast: ?http://svs.gsfc.nasa.gov/vis/iTunes/f0004_index.html? Or find NASA Goddard Space Flight Center on facebook: ?http://www.facebook.com/NASA.GSFC? Or find us on Twitter: ?http://twitter.com/NASAGoddard?
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