1
00:00:00,000 --> 00:00:03,990
[music]

2
00:00:04,010 --> 00:00:08,050
Carbon, trapped in frozen earth for tens of thousands of years

3
00:00:12,140 --> 00:00:16,120
is seeping out of thawing permafrostthat lies beneath Arctic lakesis seeping out of thawing permafrostthat lies beneath Arctic lakes

4
00:00:24,200 --> 00:00:28,190
It bubbles up as methane, a greenhouse gas much more potent than CO2.

5
00:00:32,250 --> 00:00:36,240
In the fall, when lakes freeze and bubbles build up in pockets under the ice,

6
00:00:40,270 --> 00:00:44,260
University of Alaska Fairbanks scientists measure these seeps, one lake at a time.

7
00:00:48,280 --> 00:00:52,260
And occasionally demonstrate methane’s flammability …

8
00:00:52,280 --> 00:00:56,270
Scientists: Whoa!

9
00:00:56,290 --> 00:01:00,270
But there are many, many lakes.And in the wilds of Alaska,they can only visit so many on foot.

10
00:01:08,320 --> 00:01:12,350
NASA’s ABoVE campaign combines their precise measurements from individual lakes

11
00:01:12,370 --> 00:01:16,400
with data from satellites which can observe the whole Arctic,