WEBVTT FILE 1 00:00:00.020 --> 00:00:04.090 This winter NASA is sending two scientists all the way to the South Pole to measure 2 00:00:04.110 --> 00:00:08.110 the ice sheet elevation along a route no one has previously 3 00:00:08.130 --> 00:00:12.130 documented. The elevation data gathered is needed to improve the accuracy 4 00:00:12.150 --> 00:00:16.170 of the upcoming global laser-altimeter mission, ICESat-2, 5 00:00:16.190 --> 00:00:20.200 which will measure the height of Earth from orbit. Accompanied by only two other 6 00:00:20.220 --> 00:00:24.220 crew members, the NASA scientists will slowly trek along 300 7 00:00:24.240 --> 00:00:28.260 kilometers around the 88-South latitude, traversing through 8 00:00:28.280 --> 00:00:32.300 a remote and relatively unknown icescape. But first, 9 00:00:32.320 --> 00:00:36.340 they need to pack. Neumann: This thing is a new ground-penetrating 10 00:00:36.360 --> 00:00:40.370 radar, and we're going to first unpack it and see that we got everything we're supposed to have. 11 00:00:40.390 --> 00:00:44.390 Neumann: And that's the main control system-- Brunt: Two sets of two, I think, so there's four-- 12 00:00:44.410 --> 00:00:48.480 Neumann: The reason that we're going to have one of these along is that we're going to 13 00:00:48.500 --> 00:00:52.530 Antarctica in support of the 88-South Calibration Project for ICESat-2, and it's a new 14 00:00:52.550 --> 00:00:56.590 part of the continent where people really haven't been before--we certainly haven't been before-- 15 00:00:56.610 --> 00:01:00.630 and for safety reasons, you bring along one of these systems. 16 00:01:00.650 --> 00:01:04.710 This will measure layers underneath the snow and if we measure the depth of 17 00:01:04.730 --> 00:01:08.760 those layers and how those depths change, we'll learn about how much snowfall we get in that 18 00:01:08.780 --> 00:01:12.840 area, which, again, a place that hasn't really been studied much before, kind of a question mark. 19 00:01:12.860 --> 00:01:16.900 Brunt: This is also an area where we have very little satellite data. It's one of the reasons why 20 00:01:16.920 --> 00:01:21.000 we're going there. It's the southernmost extent of where we have data for ICESat-2, 21 00:01:21.020 --> 00:01:25.040 even though it's the southernmost limit, it's also the most dense area for our dataset. 22 00:01:25.060 --> 00:01:29.060 But, a lot of satellites are kind of blind to this area, 23 00:01:29.080 --> 00:01:33.080 there's very little information. So even though our expectations are that it's thick and slow- 24 00:01:33.100 --> 00:01:37.110 moving ice and we shouldn't have a problem, better safe than sorry. 25 00:01:37.130 --> 00:01:41.120 Brunt: So we'll leave here, you lose a day in transit because you go over the 26 00:01:41.140 --> 00:01:45.160 International Date Line. We'll arrive in Christchurch, and, you know, 27 00:01:45.180 --> 00:01:49.200 roughly a day or two later. From there there's a couple of just logistical 28 00:01:49.220 --> 00:01:53.240 busy things to do, and then we'll fly via military to McMurdo Station, 29 00:01:53.260 --> 00:01:57.290 which is on the edge of the continent. So at sea level, roughly. 30 00:01:57.310 --> 00:02:01.350 And that's a really large base, roughly a thousand beds, 31 00:02:01.370 --> 00:02:05.380 so it's very active, but you need that number of people to run the runways, make the food, 32 00:02:05.400 --> 00:02:09.450 make sure people have housing. So we'll fly eventually to the South Pole, 33 00:02:09.470 --> 00:02:13.500 and that's kind of cool because you'll have to fly on aircraft that have skis to 34 00:02:13.520 --> 00:02:17.580 get into the South Pole because there isn't any rock exposed at the South Pole. 35 00:02:17.600 --> 00:02:21.650 South Pole is actually at about 10,000 feet above sea level, so 36 00:02:21.670 --> 00:02:25.700 rather than just hit the ground and go out and set everything up and start running, 37 00:02:25.720 --> 00:02:29.770 we'll spend some time acclimatizing to the altitude. 38 00:02:29.790 --> 00:02:33.850 But we'll fly into the South Pole, we'll get our gear all set up, put it onto PistenBullys 39 00:02:33.870 --> 00:02:37.910 with big sleds, then we'll start driving. And our drive is about 40 00:02:37.930 --> 00:02:41.970 750 kilometers roundtrip to get back to South Pole. 41 00:02:41.990 --> 00:02:46.110 Neumann: Do we want to ship this? Brunt: No. 42 00:02:46.130 --> 00:02:50.110 Neumann: We are not going to be wearing this-- 43 00:02:50.130 --> 00:02:53.719 [music]