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.
