WEBVTT FILE 1 00:00:00.000 --> 00:00:00.330 2 00:00:00.350 --> 00:00:02.720 Of all the CO2 that humans are emitting into the atmosphere, 3 00:00:02.740 --> 00:00:06.990 about half is being absorbed by the land and the oceans. 4 00:00:07.010 --> 00:00:10.620 To better understand the processes that control carbon emission and carbon uptake, 5 00:00:10.640 --> 00:00:13.080 NASA is working to develop realistic models that describe 6 00:00:13.100 --> 00:00:16.980 how carbon moves between the atmosphere, land and oceans. 7 00:00:17.000 --> 00:00:18.680 We combine a wealth of satellite data 8 00:00:18.700 --> 00:00:21.020 with a description of physical processes 9 00:00:21.040 --> 00:00:22.900 that control the carbon cycle. 10 00:00:22.920 --> 00:00:26.330 A whole lot of math and computer power in order to better understand 11 00:00:26.350 --> 00:00:30.530 how carbon is changing both today and in the future. 12 00:00:30.550 --> 00:00:34.013