1 00:00:00,010 --> 00:00:04,010 [plane sounds] My name is Rachael Kroodsma, I'm with 2 00:00:04,030 --> 00:00:08,040 the NASA Goddard Space Flight Center and I am instrument scientist for 3 00:00:08,060 --> 00:00:12,060 CoSMIR. CoSMIR has very similar 4 00:00:12,080 --> 00:00:16,170 frequencies to what GMI, the microwave radiometer 5 00:00:16,190 --> 00:00:20,180 on GPM has. And so by flying CoSMIR on 6 00:00:20,200 --> 00:00:24,290 the DC-8 and especially doing underflights with GPM 7 00:00:24,310 --> 00:00:28,470 passes over us, we'll be able to relate 8 00:00:28,490 --> 00:00:32,640 the measurements we see from CoSMIR with GMI, and 9 00:00:32,660 --> 00:00:36,820 by that way we can validate the measurements. What a radiometer 10 00:00:36,840 --> 00:00:40,890 does is that it measures the radiation that's naturally emitted from 11 00:00:40,910 --> 00:00:44,910 the Earth. In this case we're measuring the rain and snow, so 12 00:00:44,930 --> 00:00:48,990 there's radiation that's naturally emitted from the rain and the snow in the microwave 13 00:00:49,010 --> 00:00:53,020 spectrum, and so this is a microwave radiometer and it's measuring that 14 00:00:53,040 --> 00:00:57,050 radiation. My expertise is with microwave radiometer calibration. 15 00:00:57,070 --> 00:01:01,090 And so I do a lot of data analysis, 16 00:01:01,110 --> 00:01:05,120 checking out calibration of microwave radiometers. 17 00:01:05,140 --> 00:01:09,150 [laughs] I just think it's pretty cool to be 18 00:01:09,170 --> 00:01:13,200 part of the instruments and to be out in the field and just see 19 00:01:13,220 --> 00:01:17,240 how everything works and how it all comes 20 00:01:17,260 --> 00:01:21,270 together and be a part of that. [music] 21 00:01:21,290 --> 00:01:25,340 [music] 22 00:01:25,360 --> 00:01:28,151 [music]