Name: NASA's Research on Climate Change | Above and Beyond
Uploaded: 2020-03-28T16:06:01.000Z
Duration: 6 min 4 s
Description: Thousands of YouTube videos with English-Chinese subtitles! Now you can learn to understand native speakers, expand your vocabulary, and improve your pronunciation...

NASA has shown us that ours is a precious planet.

Transition words & phrases

NASA has unique capabilities because we have the point of view from space.

With NASA's carbon monitoring system, you can see the amount of CO two in the atmosphere decreasing in the spring.

In the summer, plants of the oceans and the land surface are greening up and pulling the karma dockside out of the atmosphere and then in the full.

And in the winter time, you'll see the CO two in the atmosphere increasing because plants and animals are releasing the carbon dioxide that was captured during the growing season.

There is a graph called the keeling curve, where you can see the summer and winter cycle.

Contrast that with old slow carbon, So this is a chunk of coal.

It also contains carbon dioxide that was in the atmosphere.

But the carbon in this chump cold was taken out of the atmosphere 350 million years ago, and since the Industrial Revolution, we've been taking it out of the ground and using it for a fuel.

The burning of fossil fuels, whether it's cold oil or natural gas has released this very, very old carbon back into the atmosphere a lot faster than the oceans, and the plants on the land can take out of the atmosphere.

Keeling curve Oh, 1989 was the last time we saw Creator and 50 parts per 1,000,000 and it appears that 2016 will be the last time.

That, too, has dipped below 400 parts per 1,000,000.

And what the heck is 400 parts per 1,000,000?

Well, we know from the analysis of my samples from the Antarctica that before the Industrial Revolution, the amount of carbon dioxide in the atmosphere was about 275 parts per 1,000,000 had been this way for thousands of years.

Something has increased in number from 275 to 400.

We're quite certain that that is due to the human activity of burning fossil fuels.

I take the satellite measurements on the variation over time of how the world is changing as fax.

We've seen this warming over the last century and 1/2 very, very meticulous measurements, and it shows a really sharp acceleration in the warming of the last four decades.

People have a hard time understanding what's a big deal for a planet that is warmer by a degree or war by two degrees Celsius.

But the impacts that we're worried about being triggered, not at a 20 degree warmer world, but they're being triggered a one degree warmer.

The last decades we've seen the ice melting.

We've seen the ice melting of the North Pole.

We've seen the ice melting really fast on Greenland for exporting off agreement into the ocean.

We've had Pacific islands that have already had to be abandoned because of sea level rise.

We can combine our data with global climate models and say, How is sea level gonna change over the next 5 10 15 years?

Because if we continue on the path we're doing, there's gonna be a lot of coastal communities all around the world that are gonna be flooded.

The most precise data that we can is open data.

It's factual, for instance, enormous droughts and fires that we have around the world directly related to a warmer planet that has a huge impact on people was unprecedented.

If you have a warmer atmosphere, they can hold more moisture because that's what warmer atmospheres do.

That means more conviction, more big thunderstorms, more hurricanes.

Well, that's one of the likely outcomes of a warming world.

Way built our civilization around the current climate.

Our coastal cities are food resources, our water resources.

They're all pegged to the current climate, and there's no much slack in the system way.

We're already seeing impacts and impact gonna increase on a two degree woman.

Will there be more and a three degree rumor world they'll be even.

And when you're looking at those kind of scenarios 345 degrees room, which is totally plausible.

 If we go down that path, way will be looking at a different time. 

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NASA's Research on Climate Change | Above and Beyond

enormous

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