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A Decade of Carbon Dioxide Data From Space Gets an Upgrade

The revised record aligns more closely with ground-based measurements and lets scientists track atmospheric CO2 month by month.

Summary by Phys.org
Every day, two NASA space instruments known as the Orbiting Carbon Observatory-2 and -3 (OCO-2 and OCO-3) capture more than a million observations of sunlight reflecting off Earth's surface. Using the physics of how light travels through the air, an algorithm converts these raw data into atmospheric carbon dioxide (CO₂) concentrations.

4 Articles

A closer look at the atmosphere: Measurement data of two CO2 instruments in space has been reworked for the period since September 2014. The improved data series closely agrees with common observations of both instruments and in many tests fits better with comparison measurements on the ground. This allows for a more reliable analysis of changes in the global carbon cycle. Fort Collins (U.S.A.). The amount [...] The article How reliable are CO2 …

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Eos broke the news on Friday, October 30, 2026.
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