WEBVTT FILE 1 00:00:03.230 --> 00:00:04.570 Here at the end of the Earth 2 00:00:04.570 --> 00:00:08.260 it still feels like a place for raw exploration and adventure. 3 00:00:08.260 --> 00:00:09.570 4 00:00:09.570 --> 00:00:12.880 It’s vast in all directions and ground zero for some of the 5 00:00:12.880 --> 00:00:15.120 biggest questions we have about the climate. 6 00:00:15.120 --> 00:00:16.570 7 00:00:16.570 --> 00:00:20.150 But when we decided to make a series about the frozen places on Earth, 8 00:00:20.150 --> 00:00:24.020 we knew there would be one hurdle we’d need to jump over first: 9 00:00:24.020 --> 00:00:24.620 10 00:00:24.620 --> 00:00:27.790 What is the cryosphere? 11 00:00:27.790 --> 00:00:29.320 The what? 12 00:00:29.320 --> 00:00:30.190 Ummm 13 00:00:30.190 --> 00:00:32.250 Oooh 14 00:00:32.250 --> 00:00:35.530 I don't know - I have no idea 15 00:00:35.530 --> 00:00:40.270 While I'm aware of the cryosphere, I don't actually know what it is 16 00:00:40.270 --> 00:00:44.540 It has something to do with ice 17 00:00:44.540 --> 00:00:47.300 Alright, that's all I got 18 00:00:47.300 --> 00:00:49.780 How do you get people acquainted with the cryosphere 19 00:00:49.780 --> 00:00:52.240 when most of us don’t know what it is? 20 00:00:52.240 --> 00:01:03.060 21 00:01:03.060 --> 00:01:07.200 NASA Explorers 22 00:01:07.200 --> 00:01:08.530 Introducing Season One 23 00:01:08.530 --> 00:01:11.650 24 00:01:11.650 --> 00:01:16.310 CRYOSPHERE 25 00:01:16.310 --> 00:01:23.230 26 00:01:23.230 --> 00:01:25.940 The Big Thaw 27 00:01:25.940 --> 00:01:27.710 Episode One 28 00:01:27.710 --> 00:01:28.880 29 00:01:28.880 --> 00:01:33.000 Washington, D.C. 30 00:01:33.000 --> 00:01:36.960 Hey, so here we are in Washington, D.C standing on the roof of NASA Headquarters. 31 00:01:36.960 --> 00:01:40.170 That’s the capitol building right behind me and what Headquarters does 32 00:01:40.170 --> 00:01:43.140 is kinda serve as the focal point to connect the dots. 33 00:01:43.140 --> 00:01:48.710 That’s Dr. Tom Wagner- NASA’s Cryospheric Program Scientist at Headquarters. 34 00:01:48.710 --> 00:01:54.040 In short – Tom is responsible for making sure NASA knows what the current status of the cryosphere is. 35 00:01:54.040 --> 00:01:57.800 The cryosphere is everything from the snow that falls by your house 36 00:01:57.800 --> 00:02:03.620 to the icy reaches of the Himalayas to the big, big, big ice sheets of Antarctica 37 00:02:03.620 --> 00:02:07.290 all the way at the south pole and also the frozen ground of the Arctic, 38 00:02:07.290 --> 00:02:10.800 and even some of that frozen ground that’s currently under the ocean. 39 00:02:10.800 --> 00:02:11.350 40 00:02:11.350 --> 00:02:14.010 If you had to break it down, you’d have a mix of 41 00:02:14.010 --> 00:02:14.880 Sea ice 42 00:02:14.880 --> 00:02:16.210 Snow cover 43 00:02:16.210 --> 00:02:17.120 Permafrost 44 00:02:17.120 --> 00:02:18.210 Ice sheets 45 00:02:18.210 --> 00:02:19.640 and Glaciers 46 00:02:19.640 --> 00:02:23.530 47 00:02:23.530 --> 00:02:26.000 Right now, our best predictions are that sea levels 48 00:02:26.000 --> 00:02:29.510 will rise anywhere from one to three feet in the next hundred years. 49 00:02:29.510 --> 00:02:33.970 Three feet of sea level rise has the potential to displace about a hundred million people, 50 00:02:33.970 --> 00:02:36.550 which is a lot of people that need to find new homes. 51 00:02:36.550 --> 00:02:37.380 52 00:02:37.380 --> 00:02:40.690 Our current reality places us at a near tipping point. 53 00:02:40.690 --> 00:02:44.400 And the cryosphere is playing a huge part in that delicate balance. 54 00:02:44.400 --> 00:02:45.130 55 00:02:45.130 --> 00:02:48.230 So, one of the things people don’t know about NASA is that we study the Earth 56 00:02:48.230 --> 00:02:51.860 and we’ve been doing that since NASA’s inception back in the 1950s. 57 00:02:51.860 --> 00:02:55.340 And we study the frozen part of the Earth in a variety of ways. 58 00:02:55.340 --> 00:02:56.140 59 00:02:56.140 --> 00:02:57.640 Missions like SnowEx, 60 00:02:57.640 --> 00:02:59.520 Airborne Snow Observatory 61 00:02:59.520 --> 00:03:00.730 Oceans Meting Greenland 62 00:03:00.730 --> 00:03:01.840 Operation IceBridge 63 00:03:01.840 --> 00:03:03.670 Arctic – Boreal Vulnerability Experiment 64 00:03:03.670 --> 00:03:06.470 and countless other labs and individual researchers 65 00:03:06.470 --> 00:03:09.760 stand at the forefront of monitoring the cryosphere. 66 00:03:09.760 --> 00:03:10.840 67 00:03:10.840 --> 00:03:14.000 But this year was a particularly big year. 68 00:03:14.000 --> 00:03:20.050 3...2...1...and liftoff 69 00:03:20.050 --> 00:03:24.810 of GRACE Follow On continuing the legacy of the GRACE mission 70 00:03:24.810 --> 00:03:28.940 of tracking the movement of water across our planet. 71 00:03:28.940 --> 00:03:31.150 72 00:03:31.150 --> 00:03:34.850 Two state-of-the-art satellite missions are being launched in a single year 73 00:03:34.850 --> 00:03:38.980 as part of a major attempt to understand Earth’s frozen places. 74 00:03:38.980 --> 00:03:41.030 75 00:03:41.030 --> 00:03:43.680 Our scientists are answering hard questions 76 00:03:43.680 --> 00:03:45.250 sharing stories from the field, 77 00:03:45.250 --> 00:03:50.030 and giving their best predictions for what we can expect of a warming world. 78 00:03:50.030 --> 00:03:54.500 79 00:03:54.500 --> 00:03:57.400 We’re taking you with us as we follow NASA explorers 80 00:03:57.400 --> 00:03:59.310 on their journey to the frozen ends of the Earth 81 00:03:59.310 --> 00:04:05.520 as they study our rapidly changing world from satellites, planes and boots on the ground. 82 00:04:05.520 --> 00:04:07.010 83 00:04:07.010 --> 00:04:10.680 CRYOSPHERE 84 00:04:10.680 --> 00:04:11.890 85 00:04:11.890 --> 00:04:14.420 On the next episode of CRYOSPHERE 86 00:04:14.420 --> 00:04:15.700 87 00:04:15.700 --> 00:04:18.080 What we can do really well from orbit is 88 00:04:18.080 --> 00:04:21.580 we can tell when a surface of land is covered in snow 89 00:04:21.580 --> 00:04:24.870 What's tricky is though, how thick is that snow 90 00:04:24.870 --> 00:04:28.340 and it's even trickier how much water is in that snow 91 00:04:28.340 --> 00:04:29.520 92 00:04:29.520 --> 00:04:32.740 Episode Two: Snow 93 00:04:32.740 --> 00:04:35.642