1 00:00:00,000 --> 00:00:07,520 [Music] 2 00:00:07,520 --> 00:00:11,040 Ott: I think one of the things that's really special about this visualization is that 3 00:00:11,040 --> 00:00:14,840 it's showing this new and really complex part of our model, which is 4 00:00:14,840 --> 00:00:17,240 atmospheric chemistry. 5 00:00:17,360 --> 00:00:20,910 Keller: One of the issues, I think with atmospheric chemistry, is that it's 6 00:00:20,910 --> 00:00:27,520 so complicated, and it changes so rapidly on a short scale, we're not necessarily 7 00:00:27,600 --> 00:00:31,840 able to observe it all the time, everywhere. 8 00:00:33,640 --> 00:00:35,720 Ott: So that's where models come in. 9 00:00:35,720 --> 00:00:39,180 By merging models and satellite data, we get a much fuller picture of what's 10 00:00:39,180 --> 00:00:41,040 going on throughout the atmosphere. 11 00:00:41,040 --> 00:00:42,899 We can see gases that we couldn't see with 12 00:00:42,899 --> 00:00:44,120 satellites alone. 13 00:00:44,120 --> 00:00:46,350 We can see the parts of the atmospheric column that we really 14 00:00:46,350 --> 00:00:50,010 need to know, like the nose-level contributions of pollutants that we need 15 00:00:50,010 --> 00:00:53,520 to communicate to policymakers to protect people's health. 16 00:00:55,800 --> 00:00:57,220 Keller: So what we are 17 00:00:57,220 --> 00:01:02,420 seeing is a visualization of the composition of the atmosphere as it 18 00:01:02,430 --> 00:01:04,520 relates to air pollution. 19 00:01:04,520 --> 00:01:06,570 There are hundreds of chemicals that all 20 00:01:06,570 --> 00:01:13,350 contribute to those pollutants, and you can see in this visualization, is really 21 00:01:13,350 --> 00:01:16,360 what the computer model does sort of like underneath. 22 00:01:16,360 --> 00:01:17,250 There are hundreds of 23 00:01:17,250 --> 00:01:20,180 chemicals, they all react with each other. 24 00:01:20,180 --> 00:01:22,830 It's a huge dating pool and all of the 25 00:01:22,830 --> 00:01:26,720 chemicals date each other all the time. 26 00:01:27,540 --> 00:01:30,980 Ott: So even though these chemicals, some of them are present only at these very 27 00:01:30,990 --> 00:01:34,829 dilute concentrations, they're actually quite important. So we have to really 28 00:01:34,829 --> 00:01:38,159 track all of these different molecules to be able to get at those pieces that 29 00:01:38,160 --> 00:01:42,680 people really need - the pieces of information that affect human health. 30 00:01:42,680 --> 00:01:47,920 Keller: We rely on computer models to gain additional insights on where is it formed, 31 00:01:47,939 --> 00:01:53,040 where is it destroyed, what are the mechanism in how it is formed, but also 32 00:01:53,040 --> 00:01:55,400 how can it be mitigated? 33 00:01:55,400 --> 00:01:57,570 Ott: There's all this interesting stuff going on all 34 00:01:57,570 --> 00:02:02,250 around us that were not necessarily aware of, and so this simulation is 35 00:02:02,250 --> 00:02:06,479 really just trying to illustrate what's going on with those gases, but by showing 36 00:02:06,479 --> 00:02:10,259 so many of them illustrate how complex their interactions are and how many 37 00:02:10,280 --> 00:02:14,760 things are going on even if we're not aware of them all the time. 38 00:02:14,760 --> 00:03:36,520 [Music] 39 00:03:36,520 --> 00:03:40,240 Ott: Ten years ago, we couldn't do anything like this. So this is really a 40 00:03:40,240 --> 00:03:45,120 revolutionary type of approach to be able to combine the satellite and the 41 00:03:45,140 --> 00:03:50,150 model, and the thing that impresses me the most about visualizations like this 42 00:03:50,160 --> 00:03:52,600 is just that we can do it. 43 00:03:52,600 --> 00:03:54,600 Just that with all of this complexity, all of these 44 00:03:54,620 --> 00:03:58,400 kinds of things being transported the atmosphere, that this actually works and 45 00:03:58,400 --> 00:04:02,450 when we compare it against observations, it actually looks really really good in 46 00:04:02,450 --> 00:04:03,754 a lot of places. 47 00:04:03,760 --> 00:04:07,400 This is a really exciting new frontier for us. 48 00:04:07,400 --> 00:04:14,880 [Music]