START A PETITION 27,000,000 members: the world's largest community for good

Soon We Will be Able to Watch the Earth ‘Breathe’

Soon We Will be Able to Watch the Earth ‘Breathe’

Artificial satellites aren’t just for national defense and GPS. They also play a role in studying the environment. Now, we have a satellite that can give us a detailed picture of the Earth’s carbon dioxide levels.

The satellite, dubbed the Orbiting Carbon Observatory or OCO, was supposed to start gathering data five years ago. However, equipment failure prevented that from happening. But last week NASA launched a second OCO satellite called OCO-2 (which, let’s be honest, is a much better name) and it can start gathering information on the levels of carbon dioxide in the atmosphere.

The Earth, in some sense, breathes. Through natural processes, there is more carbon dioxide in the atmosphere during some times of the year than others. Teasing out the human effect on this cycle and the climate is tricky, so precise measurements are key. It is a fact that the amount of carbon dioxide humans are dumping into the atmosphere is causing climate change, but there are still a lot of things we don’t yet understand.

One of the biggest mysteries is how oceans and forests manage to absorb about half of atmospheric carbon dioxide. Apparently, this is happening even as carbon dioxide levels are increasing–and we have no idea why. Scientists hope that the data collected by OCO-2 will help solve this mystery. This isn’t just knowledge for knowledge’s sake, though. According to Michael Gunson, a scientist working on this project, if we can figure this out it will allow us to better forecast the Earth’s future climate:

“Trying to get to a point of understanding the details of those processes will give us some insight into the future and what’s likely to happen over [the coming] decades, even if we continue to consume more and more fossil fuels and emit more and more carbon dioxide into the atmosphere,” Gunson said.

But carbon dioxide is an invisible gas. How is a satellite supposed to take readings? It all has to do with chemistry. Every element absorbs different wavelengths of light, and we have the ability to measure that. We know the absorption pattern of carbon dioxide, so we can figure out where the gas is concentrated and where it’s being absorbed.

This isn’t the first satellite in orbit that takes carbon dioxide readings, but it will be the most prolific. The satellite will take a million measurements a day. If that sounds like a lot, it is. But it has to take a lot of measurements. At any time about two thirds of the Earth is covered with clouds, so it’s estimated that only about 100,000 of these million measurements will be useful.

NASA plans to make the data obtained by OCO-2 freely available in hopes that we can all put our heads together and come up with better climate predictions. Some scientists hope that this project can have an effect outside of science circles:

“We’d also hope that policy-makers might use some of this information to, for example, start to take a look at the impact of some of the emission-reduction activities that go on [and get a better understanding of] what’s happening globally,” added OCO program executive Betsy Edwards, at NASA Headquarters in Washington, DC.

OCO-2 may or may not change minds when it comes to climate change, but at least it will help us determine what we’re in for.

Read more: , , , , ,

have you shared this story yet?

some of the best people we know are doing it


+ add your own
2:07AM PST on Jan 21, 2015

Live long and prosper!

3:11AM PDT on Jul 20, 2014

Interesting article, thank you!

12:48AM PDT on Jul 15, 2014

Thanks for sharing

9:32PM PDT on Jul 14, 2014

Too bad we didn't start getting data sooner. I fear that now, we will only be able to document our demise.

4:05AM PDT on Jul 12, 2014

Let's work for a better world and our clean homeland

9:54PM PDT on Jul 11, 2014

Stop 1000 tons of CO2 emissions by saving acres of rainforest for the cost of a cup of coffee:

8:02PM PDT on Jul 11, 2014

Very informative....thanks

7:49PM PDT on Jul 11, 2014

Thanks for the interesting article.

3:03AM PDT on Jul 11, 2014

Regarding the headline i would rather say:

able to Watch the Earth "Bleed and/or suffocate"..........................

2:20AM PDT on Jul 11, 2014

Thanks for sharing.

add your comment

Disclaimer: The views expressed above are solely those of the author and may not reflect those of
Care2, Inc., its employees or advertisers.

Care2 - Be Extraordinary - Start a Care2 Petition
ads keep care2 free

Recent Comments from Causes

noted, thanks, spam flagged

This anti-soy hype is even more irritating than the gluten-free hype nonsense. People in the far east…

Reading the Bible from cover to cover will NOT make anyone a Christian UNLESS ....they know the purpose…

meet our writers

Julie M. Rodriguez Julie M. Rodriguez is an arts, green living, and political writer based in San Mateo, CA. Her work... more
ads keep care2 free

Select names from your address book   |   Help

We hate spam. We do not sell or share the email addresses you provide.