﻿1
00:00:14,681 --> 00:00:16,349
There is one place where we're seeing

2
00:00:16,349 --> 00:00:19,452
climate change unfold faster than anywhere else on Earth.

3
00:00:20,320 --> 00:00:21,988
Here,

4
00:00:21,988 --> 00:00:23,690
In fact, temperatures
in the Arctic and boreal regions

5
00:00:23,690 --> 00:00:27,127
are rising nearly four times
as fast as those in the mid-latitudes.

6
00:00:28,361 --> 00:00:30,897
That's why NASA has teamed up
with local partners

7
00:00:30,897 --> 00:00:34,734
to better understand the vulnerability
and resilience of these ecosystems,

8
00:00:35,168 --> 00:00:38,671
while also gathering valuable data
that will help future Earth-observing satellites.

9
00:00:38,671 --> 00:00:42,542
From space, air and on the ground, we'll see how scientists are piecing

10
00:00:42,542 --> 00:00:45,812
together the story of the Arctic -

11
00:00:46,112 --> 00:00:48,948
from how it is changing, to what that means for our planet.

12
00:00:49,682 --> 00:00:55,622
Because, as they say, what happens in the Arctic doesn't stay in the Arctic.

13
00:00:56,222 --> 00:00:58,224
BP is engaged..

14
00:00:58,358 --> 00:01:00,360
and we're radiating.

15
00:01:00,427 --> 00:01:03,263
One of the best ways to track how an environment is changing

16
00:01:03,263 --> 00:01:05,098
is to observe it from above.

17
00:01:05,098 --> 00:01:09,669
But where weather and vegetation
can make it difficult to see the ground with the naked eye.

18
00:01:09,669 --> 00:01:14,841
Specialized radar can pierce the clouds
to give us a crystal clear look at the landscape.

19
00:01:14,841 --> 00:01:19,212
This special device, weighing nearly
1,000 lbs, collects data about soil

20
00:01:19,212 --> 00:01:24,417
moisture, vegetation, permafrost
and other environmental processes on the ground below.

21
00:01:24,417 --> 00:01:28,621
In fact, it's so precise that NASA
developed a special system for pilots

22
00:01:28,621 --> 00:01:33,326
to fly the exact same flight path year
after year to get an accurate reading

23
00:01:33,326 --> 00:01:35,495
as to how a landscape is changing over time.

24
00:01:35,528 --> 00:01:36,563
Dr. Liz Hoy: So with the airborne data,

25
00:01:36,563 --> 00:01:40,900
we can target exactly where we want to go
and exactly when we want to go there.

26
00:01:41,167 --> 00:01:45,371
And we get very high resolution data
so we can have a really clear picture of what's on the ground.

27
00:01:46,773 --> 00:01:51,444
So our satellite data gives us a very broad picture of what's happening
all over the landscape.

28
00:01:51,778 --> 00:01:56,082
And then with our airborne data, we can target specific locations and times

29
00:01:56,082 --> 00:01:57,684
when we want to get imagery,

30
00:01:57,684 --> 00:02:00,653
and then we can compare both our satellite
and our airborne data

31
00:02:00,653 --> 00:02:02,155
with what's happening on the ground.

32
00:02:02,155 --> 00:02:04,757
We have teams actually out on the ground
making measurements

33
00:02:05,191 --> 00:02:07,760
and putting all that together is really where we get

34
00:02:07,760 --> 00:02:12,132
a lot of the power of what we're able to study.

35
00:02:12,298 --> 00:02:15,268
Dr. Katey Walter Anthony:  Not all permafrost contains ice,
but here in Interior

36
00:02:15,268 --> 00:02:18,771
Alaska, we have frozen soils
with massive amounts of ice.

37
00:02:18,771 --> 00:02:22,742
There are very large
ice wedges, ice wedges as big as garages.

38
00:02:23,243 --> 00:02:28,648
When that ice melts, the ground surface collapses,
and the sinkholes can fill with water.

39
00:02:28,915 --> 00:02:32,552
When that happens, new little ponds
form. thermokarst ponds,

40
00:02:33,219 --> 00:02:37,123
and as thermokarst ponds form, microbes
in the soil feast

41
00:02:37,123 --> 00:02:41,528
on the newly thawed organic material,
releasing methane into the atmosphere,

42
00:02:42,128 --> 00:02:45,665
an extremely potent, and
flammable, greenhouse gas.

43
00:02:46,533 --> 00:02:49,402
So the bad news is that as human caused-climate change

44
00:02:49,402 --> 00:02:52,272
continues to impact the Arctic
and boreal landscapes,

45
00:02:52,605 --> 00:02:56,075
those living both near
and far will continue to feel its effects.

46
00:02:56,943 --> 00:03:00,280
But the good news is that there is a team
of dedicated scientists

47
00:03:00,280 --> 00:03:03,783
across a variety of disciplines
that are working together to give us

48
00:03:03,783 --> 00:03:07,220
a complete picture of these ecosystems
and how they are changing.

49
00:03:08,821 --> 00:03:21,734
Because this collective knowledge
is key to understanding how we can lessen our impact.
