WEBVTT FILE 1 00:00:05.638 --> 00:00:06.690 Well, according to NASA's 2 00:00:06.690 --> 00:00:10.410 records, 2022 is tied for the fifth warmest on record. 3 00:00:10.643 --> 00:00:11.428 And collectively, 4 00:00:11.428 --> 00:00:14.781 the last nine years have been the warmest since modern recordkeeping began. 5 00:00:15.198 --> 00:00:18.651 Temperatures in 2022 were about 1.1 degrees Celsius 6 00:00:18.651 --> 00:00:22.489 or about 2 degrees Fahrenheit above the late 19th century average. 7 00:00:22.706 --> 00:00:25.975 And while that may sound like a small number, just small changes 8 00:00:25.975 --> 00:00:29.162 in temperature can have big impacts around the world. 9 00:00:34.250 --> 00:00:36.169 So what we see with with climate change, 10 00:00:36.169 --> 00:00:38.004 with the temperatures that we're already experiencing, 11 00:00:38.004 --> 00:00:42.175 this 1.1 degrees Celsius or 2 degrees Fahrenheit, we're already seeing impacts. 12 00:00:42.175 --> 00:00:45.361 So we see declines in the extent and mass of Arctic sea ice. 13 00:00:45.595 --> 00:00:48.748 We see increases in sea level and we see more extreme events 14 00:00:48.748 --> 00:00:52.802 like heatwaves and wildfires, more changes in precipitation patterns 15 00:00:52.802 --> 00:00:56.823 that lead to more droughts and floods and heavy precipitation events. 16 00:00:57.057 --> 00:00:58.591 So we're seeing these these changes 17 00:00:58.591 --> 00:01:02.846 in our Earth system already driven by climate change. 18 00:01:06.683 --> 00:01:06.950 So we 19 00:01:06.950 --> 00:01:10.019 use the vantage point of space to observe the Earth from space. 20 00:01:10.019 --> 00:01:12.572 We can see all of the Earth and we can measure different things. 21 00:01:12.772 --> 00:01:15.692 So each of our satellites is designed to measure something different 22 00:01:15.692 --> 00:01:16.609 about the planet. 23 00:01:16.609 --> 00:01:20.513 And so what we can see are things like vegetation, changes in the massive ice 24 00:01:20.513 --> 00:01:24.901 sheets, clouds and precipitation, carbon dioxide and much more. 25 00:01:24.984 --> 00:01:27.003 And we've been observing the planet for decades. 26 00:01:27.003 --> 00:01:27.570 So we can see 27 00:01:27.570 --> 00:01:31.291 not just the state of the Earth today, but also how it's changed over time. 28 00:01:31.608 --> 00:01:35.161 The most recent satellite we launched, SWOT, which NASA launched 29 00:01:35.161 --> 00:01:38.832 in December, shows us surface water and ocean topography. 30 00:01:38.848 --> 00:01:40.100 So it can, it's going to be able to tell us 31 00:01:40.100 --> 00:01:42.318 how much water is running through rivers and lakes 32 00:01:42.318 --> 00:01:44.938 and also give us more information about ocean circulation. 33 00:01:45.121 --> 00:01:48.324 And oceans play a really important role in climate change in that they absorb 34 00:01:48.324 --> 00:01:51.528 a lot of heat and carbon and so will give us more information 35 00:01:51.528 --> 00:01:55.348 about their potential to do so in the future. 36 00:01:59.219 --> 00:02:02.188 So what we're seeing is increases in temperatures have continued. 37 00:02:02.188 --> 00:02:05.542 So over the last nine years, the warmest since modern recordkeeping began. 38 00:02:05.875 --> 00:02:06.993 We know that the changes 39 00:02:06.993 --> 00:02:10.680 that we've experienced so far are driven by greenhouse gases from human activity. 40 00:02:10.947 --> 00:02:14.701 And what science tells us is that future warming will depend on future emissions. 41 00:02:14.901 --> 00:02:18.271 And if temperatures continue to rise, we'll see more of these impacts 42 00:02:18.271 --> 00:02:20.306 and extreme events that we're experiencing today. 43 00:02:20.306 --> 00:02:24.527 So more heatwaves, more wildfires, more droughts and heavy precipitation 44 00:02:24.527 --> 00:02:28.047 events in the future with more warming. 45 00:02:32.268 --> 00:02:36.322 So 2022 is what scientists and meteorologists call a La Niña year. 46 00:02:36.573 --> 00:02:39.209 And in general, La Niña years are cooler than average. 47 00:02:39.442 --> 00:02:42.662 But 2022 is still tied for the fifth warmest 48 00:02:42.662 --> 00:02:45.899 and among the nine warmest years on record because of climate change. 49 00:02:46.316 --> 00:02:49.219 So we are seeing increases in temperature now that 50 00:02:49.219 --> 00:02:52.338 continue into the future. 51 00:02:56.125 --> 00:02:57.577 NASA.gov slash earth.