1 00:00:08,120 --> 00:00:04,060 [music] 2 00:00:08,140 --> 00:00:12,240 Joe: The weather here is very unique in that we have all these different types of precipitation 3 00:00:12,260 --> 00:00:16,390 occurring in the same spot and the underlying factor behind all of it is 4 00:00:16,410 --> 00:00:20,420 rain, rain, rain. It's one storm system after another comes in from the 5 00:00:20,440 --> 00:00:24,610 coast, and the rainfall just piles up. Patrick: Really what we're looking at here 6 00:00:24,630 --> 00:00:28,740 are these big midlatitude frontal systems that make landfall 7 00:00:28,760 --> 00:00:32,930 onto the Olympic Peninsula and how these systems kind of go 8 00:00:32,950 --> 00:00:36,930 from the ocean onto the land and hit the mountains and start really 9 00:00:36,950 --> 00:00:40,980 growing vertically and where some really intense convection 10 00:00:41,000 --> 00:00:45,030 and rainfall can occur. So ground validation basically helps us understand 11 00:00:45,050 --> 00:00:49,040 how well the satellite is seeing precipitation. Patrick: So what we're trying 12 00:00:49,060 --> 00:00:53,090 to do with GPM is kind of build a three dimensional view of 13 00:00:53,110 --> 00:00:57,240 precipitating clouds. And so in order to do that we need 14 00:00:57,260 --> 00:01:01,260 measurements that are directly on the ground and then we need measurements 15 00:01:01,280 --> 00:01:05,310 of the cloud and then measurements kind of looking from different perspectives of the cloud. 16 00:01:05,330 --> 00:01:09,390 David: NASA will be providing two aircraft, the DC-8, 17 00:01:09,410 --> 00:01:13,460 which will be flying at mid-levels, 39,000 feet or so, and 18 00:01:13,480 --> 00:01:17,640 then the ER-2 aircraft, which flies much higher above the clouds. 19 00:01:17,660 --> 00:01:21,710 On the ground the main assets are the NASA Polarmetric Radar, is where 20 00:01:21,730 --> 00:01:25,780 we are now, along with the D3R radar, which is a dual-frequency, dual- 21 00:01:25,800 --> 00:01:29,940 polarization radar that has the same frequencies as the GPM satellite 22 00:01:29,960 --> 00:01:34,110 Well we're quite remote, which is fine, but he hardest part actually 23 00:01:34,130 --> 00:01:38,250 for my group was to acquire land on the Quinault Indian 24 00:01:38,270 --> 00:01:42,320 Nation Territory. There was a lot of--we needed to make sure we 25 00:01:42,340 --> 00:01:46,390 were doing the right thing environmentally, get all the right permits. We worked very closely with the 26 00:01:46,410 --> 00:01:50,480 Quinault Indian Nation, they were wonderful. Then once we got all the regular permits, 27 00:01:50,500 --> 00:01:54,520 we had to then kind of cap the top of the mountain to support our radar 28 00:01:54,540 --> 00:01:58,730 which requires about 1500 pounds per square foot for it to be set on 29 00:01:58,750 --> 00:02:02,780 stable. Patrick: some of my colleauges 30 00:02:02,800 --> 00:02:06,930 actually had to hike in and put instruments in or go maintain instruments 31 00:02:06,950 --> 00:02:11,010 you know, 14-mile journeys into the woods basically. It's really neat 32 00:02:11,030 --> 00:02:15,040 to get to work in such a unique environment like that 33 00:02:15,060 --> 00:02:19,150 where you can actually put these instruments in places where there's never been measurements 34 00:02:19,170 --> 00:02:23,330 like that before. Matt: You know we have sites all the way on the 35 00:02:23,350 --> 00:02:27,380 coast, they're going to see probably 6 inches of rain for the season. We're going to have some 36 00:02:27,400 --> 00:02:31,430 sites that are going to be up in the mountains that are going to see a couple of feet of rain for 37 00:02:31,450 --> 00:02:35,460 the season, and we also have instruments sitting around 5000 feet that are going to see probably 38 00:02:35,480 --> 00:02:39,650 a few feet of snow. So we're going to see quite a breadth of precipitation for 39 00:02:39,670 --> 00:02:43,700 this project. [music]