1 00:00:07,909 --> 00:00:03,750 the operation icebridge 2010 arctic 2 00:00:12,549 --> 00:00:09,669 since arriving in greenland on march 3 00:00:14,629 --> 00:00:12,559 22nd the mission scientists engineers 4 00:00:15,990 --> 00:00:14,639 and crew have already taken off on 5 00:00:18,230 --> 00:00:16,000 several science flights over the 6 00:00:20,870 --> 00:00:18,240 region's glaciers and sea ice 7 00:00:22,470 --> 00:00:20,880 flying aboard nasa's dc-8 aircraft 8 00:00:23,509 --> 00:00:22,480 outfitted with an array of science 9 00:00:25,349 --> 00:00:23,519 instruments 10 00:00:27,589 --> 00:00:25,359 scientists are monitoring changes to the 11 00:00:30,070 --> 00:00:27,599 region's ice even peering below the 12 00:00:32,790 --> 00:00:30,080 surface of some glaciers an observation 13 00:00:34,549 --> 00:00:32,800 not currently possible from satellites 14 00:00:36,950 --> 00:00:34,559 the first priority of this campaign is 15 00:00:40,229 --> 00:00:36,960 to survey arctic sea ice which reaches 16 00:00:41,670 --> 00:00:40,239 its maximum extent just as spring begins 17 00:00:43,590 --> 00:00:41,680 the amount of sea ice covering the 18 00:00:45,190 --> 00:00:43,600 arctic at the end of each winter is an 19 00:00:47,350 --> 00:00:45,200 important indication of the health of 20 00:00:48,790 --> 00:00:47,360 the arctic and earth's climate system 21 00:00:50,389 --> 00:00:48,800 greenland because of its presence and 22 00:00:53,670 --> 00:00:50,399 antarctica all the ice masses together 23 00:00:55,830 --> 00:00:53,680 act as acts as buffer and climate and so 24 00:00:58,310 --> 00:00:55,840 if if they were to start to melt which 25 00:01:01,189 --> 00:00:58,320 which many people believe that they are 26 00:01:03,110 --> 00:01:01,199 then the eventual effect will be a 27 00:01:04,630 --> 00:01:03,120 warmer climate overall 28 00:01:06,789 --> 00:01:04,640 over the course of this spring's 29 00:01:09,109 --> 00:01:06,799 five-week campaign researchers will make 30 00:01:10,950 --> 00:01:09,119 a total of 10-12 science flights 31 00:01:13,429 --> 00:01:10,960 continuing to monitor the most sensitive