WEBVTT FILE 1 00:00:00.060 --> 00:00:04.310 The Arctic is getting greener and wetter, 2 00:00:04.310 --> 00:00:08.420 warming roughly twice as fast as the rest of the planet. 3 00:00:08.420 --> 00:00:12.510 This summer, NASA scientists took a bird’s eye view…several of them, in fact… 4 00:00:12.510 --> 00:00:16.610 to study changes in the region. 5 00:00:16.610 --> 00:00:20.730 As part of the Arctic-Boreal Vulnerability Experiment, or ABoVE, 6 00:00:20.730 --> 00:00:24.890 scientists from NASA and partner organizations flew a total of 10 planes over Alaska and Canada 7 00:00:24.890 --> 00:00:29.250 to gather important instrument data, measuring everything from 8 00:00:29.250 --> 00:00:33.750 carbon in the atmosphere to water levels in lakes and rivers and thawing permafrost. 9 00:00:33.750 --> 00:00:38.430 These data will be combined with measurements taken from field sites 10 00:00:38.430 --> 00:00:43.030 to get a comprehensive picture of environmental change in the Arctic. 11 00:00:43.030 --> 00:00:47.040 On the Active Sensing of Carbon dioxide Emissions over Nights, Days and Seasons, or ASCENDS, 12 00:00:47.040 --> 00:00:51.770 experiment, NASA’s DC-8 plane flew big looping spirals 13 00:00:51.770 --> 00:00:55.930 over Alaska and Canada to measure carbon dioxide and methane released into the atmosphere. 14 00:00:55.930 --> 00:01:00.390 Scientists down on the tundra 15 00:01:00.390 --> 00:01:04.790 are looking for sources and sinks for this carbon dioxide and methane. 16 00:01:04.790 --> 00:01:08.980 NASA’s partner organizations are studying emissions from thawing permafrost, 17 00:01:08.980 --> 00:01:12.980 using plexiglass boxes that sit directly on the ground 18 00:01:12.980 --> 00:01:17.090 as well as small towers that measure how carbon dioxide, methane and energy 19 00:01:17.090 --> 00:01:21.150 move from the land surface to the atmosphere and back. 20 00:01:21.150 --> 00:01:25.460 Attacking the research from multiple vantage points helps the scientists in the air 21 00:01:25.460 --> 00:01:29.460 ensure that their instruments are functioning properly, and tests them against known measurements. 22 00:01:29.460 --> 00:01:33.520 In addition, it can help the science teams 23 00:01:33.520 --> 00:01:37.770 pinpoint the potential causes of changes their instruments read. 24 00:01:37.770 --> 00:01:42.330 For the ASCENDS team, that may mean determining if carbon spikes they see in the air 25 00:01:42.330 --> 00:01:46.330 are from wildfires or organic materials decomposing underground. 26 00:01:46.330 --> 00:01:50.410 With the summer over in the Arctic, the ABoVE team is finished with the second year 27 00:01:50.410 --> 00:01:54.490 of research in the region. Next summer, they’ll be back in the field to collect another round of data. 28 00:01:54.490 --> 00:01:58.710 The campaign is designed to run for 10 years 29 00:01:58.710 --> 00:02:02.780 to provide a look at long-term trends caused by the warming climate. 30 00:02:02.780 --> 00:02:06.800 31 00:02:06.800 --> 00:02:08.495