Researchers help NASA measure carbon dioxide in the atmosphere

July 1, 2014, Colorado State University

Colorado State University scientists are involved in the launch of a $467 million NASA satellite that will provide researchers with the clearest picture to date of the amount of carbon dioxide accumulating in the atmosphere and in natural "sinks" such as plants and oceans.

Researchers in the Department of Atmospheric Science and CIRA, the Cooperative Institute for Research in the Atmosphere, at CSU have helped develop the sophisticated algorithms that will crunch data collected by NASA's Orbiting Carbon Observatory-2 satellite.

The OCO-2 satellite is scheduled to launch at 2:56 a.m. local time on July 1 from Vandenberg Air Force Base in California. Once it is in orbit, the CSU team will work with NASA to analyze the information OCO-2 collects.

"We at CSU have been working hard on this mission for many years now," said Professor Chris O'Dell, who is leading the Colorado State team. "We've been involved with OCO-2 from the original concept design process, through the implementation of the algorithms used to actually produce the measurements."

The seven-foot-long OCO-2 spacecraft weighs 999 pounds and will circle Earth from pole-to-pole in approximately 98 minutes.

The satellite is expected to orbit the Earth for at least two years and will collect data at a higher resolution and with greater accuracy than has been previously possible. Currently, only the Greenhouse Gases Observing Satellite (GOSAT), launched by the Japanese space agency in 2009, is dedicated to collecting carbon dioxide data.

OCO-2 is equipped with an advanced sensor that can quantify the amount of down to about 1 part per million. It also will measure the faint "glow" emitted by plants during photosynthesis, providing further information about the carbon cycle process.

The new satellite will provide much-needed information about CO2 sources and sinks, which will help scientists worldwide develop better climate models.

Roughly 36 billion tons of carbon dioxide are emitted into the atmosphere every year (the equivalent of every U.S. household putting out 40 bags of trash every week for a year). About half of that stays in the atmosphere and the other half is absorbed by Earth's oceans and plants.

What scientists want to understand – and what the data collected by OCO-2 will help inform – is where those sources and sinks of atmospheric CO2 are located on the planet. Determining where is emitted and where it is taken up by Earth's natural ecosystem is a key "missing piece" of the climate story.

"This information plays a huge role in our ability to predict how our climate is changing," he said.

OCO-2 is a near replica (as some on the mission say, a "carbon copy") of a previous NASA mission to measure atmospheric CO2.

A nearly-identical satellite, dubbed OCO, lifted off from Vandenburg in February 2009. That mission ended roughly eleven minutes after launch when the nose cone of the rocket carrying the OCO satellite into orbit failed to separate as planned, plunging the back into the atmosphere, where it burned up over the Antarctic ocean.

"Many of us on that original team were very heartbroken but this successor to the OCO mission is in many ways superior to the original, and we're extremely excited to put years of theory into practice and push the envelope of scientific understanding," O'Dell said.

Explore further: NASA readies satellite to measure atmospheric CO2

Related Stories

Five things about OCO-2

June 30, 2014

The Orbiting Carbon Observatory-2 (OCO-2) is scheduled to launch July 1 from California's Vandenberg Air Force Base.

NASA's OCO-2 will track our impact on airborne carbon

June 26, 2014

( —Every time we get in a car and drive, we burn gasoline, releasing carbon dioxide and other compounds into the air and disturbing Earth's climate. Our use of fossil fuels continues to increase exponentially, ...

NASA carbon sleuth gets simulated taste of space

December 24, 2013

( —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 ...

Recommended for you

EPA adviser is promoting harmful ideas, scientists say

March 22, 2019

The Trump administration's reliance on industry-funded environmental specialists is again coming under fire, this time by researchers who say that Louis Anthony "Tony" Cox Jr., who leads a key Environmental Protection Agency ...

Coffee-based colloids for direct solar absorption

March 22, 2019

Solar energy is one of the most promising resources to help reduce fossil fuel consumption and mitigate greenhouse gas emissions to power a sustainable future. Devices presently in use to convert solar energy into thermal ...


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.