NASA readies satellite to measure atmospheric CO2

June 13, 2014
An artists rendition of NASA's Orbiting Carbon Observatory (OCO)-2, which will launch on July 1 and measure atmospheric carbon dioxide

NASA is preparing a July 1 launch for its first satellite dedicated to measuring atmospheric levels of carbon dioxide, a greenhouse gas that plays a key role in climate change.

CO2 levels have reached their highest point in at least 800,000 years, according to the US space agency.

The Orbiting Carbon Observatory-2 (OCO-2) is very similar to its predecessor, OCO-1, which was destroyed during its launch in February 2009.

The satellite will help provide a more complete and global picture of man-made and naturally occurring CO2 emissions as well as the effects of carbon "sinks," like oceans and forests, which absorb and trap the gas.

"Carbon dioxide in the atmosphere plays a critical role in our planet's energy balance and is a key factor in understanding how our climate is changing," said Michael Freilich, director of NASA's Earth Science Division.

"With the OCO-2 mission, NASA will be contributing an important new source of global observations to the scientific challenge of better understanding our Earth and its future," he added in a statement.

The OCO-2 satellite will be launched on a United Launch Alliance Delta II rocket from Vandenberg Air Force Base in California, aiming for an orbit at 438 miles (705 kilometers) above the Earth's surface.

Smoke stacks at American Electric Power's (AEP) Mountaineer coal power plant in West Virginia on October 30, 2009

NASA envisions it becoming the lead satellite for a six-strong fleet that will circle the Earth every 99 minutes, allowing nearly simultaneous observations across the globe.

OCO-2, designed to operate for at least two years, will take measurements of carbon emissions and carbon sinks around the world to help scientists analyze how they change over time.

In April, monthly concentrations of carbon dioxide in the atmosphere surpassed 400 particles per million in the northern hemisphere, which NASA said was the highest level in at least the past 800,000 years.

Human activities—including the burning of fossil fuels like oil, natural gas and coal—are blamed for emitting nearly 40 billion tonnes of CO2 in the atmosphere each year, leading to an unprecedented accumulation of the .

Climate scientists have concluded that the increase of CO2 emissions from human activities, especially from and deforestation, have upset the planet's natural carbon cycle, prompting rising temperatures and planet-wide .

Currently, less than half of the CO2 emitted by human activities remains in the atmosphere, scientists say.

Measurements of CO2 levels taken by the new satellite will be combined with data obtained by land-based observatories, airplanes and other satellites.

Explore further: Orbiting Carbon Observatory Set for Feb. 24 Launch

Related Stories

Orbiting Carbon Observatory Set for Feb. 24 Launch

February 19, 2009

(PhysOrg.com) -- The Orbital Sciences Taurus XL rocket set to launch NASA's Orbiting Carbon Observatory is now fully assembled at Launch Complex 576-E at Vandenberg Air Force Base in California.

NASA carbon sleuth gets simulated taste of space

December 24, 2013

(Phys.org) —A NASA observatory that will make the most precise, highest-resolution and most complete, space-based measurements of carbon dioxide in Earth's atmosphere to date has marked a key milestone in preparation for ...

NASA's OCO-2 brings sharp focus on global carbon

April 3, 2014

Simply by breathing, humans have played a small part in the planet-wide balancing act called the carbon cycle throughout our existence. However, in the last few hundred years, we have taken a larger role. Our activities, ...

Recommended for you

'Carbon sink' detected underneath world's deserts

July 28, 2015

The world's deserts may be storing some of the climate-changing carbon dioxide emitted by human activities, a new study suggests. Massive aquifers underneath deserts could hold more carbon than all the plants on land, according ...

2 comments

Adjust slider to filter visible comments by rank

Display comments: newest first

JoeBlue
1.5 / 5 (8) Jun 13, 2014
Gotta make work up to keep that payday coming... Isn't that right NASA?
orti
2 / 5 (8) Jun 13, 2014
Sounds like we're already paying for 6 carbon cops in the sky. Big bro can't wait to tax and regulate.

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.