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Press Release 13-139
Seasonal carbon dioxide range expanding as more is added to Earth's atmosphere

Northern Hemisphere land-based ecosystems "taking deeper breaths," scientists find

Back to article | Note about images

The NSF/NCAR Gulfstream V aircraft in Anchorage, Alaska, outside the hangar

The NSF/NCAR Gulfstream V aircraft in Anchorage, Alaska, as it takes part in the HIPPO study.

Credit: UCAR


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HIPPO logo, or HIAPER Pole-to-Pole Observations

HIPPO, or HIAPER Pole-to-Pole Observations, scientists study Earth's carbon dioxide levels.

Credit: UCAR


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Air-sampling flasks used during HIPPO flights and researcher Andy Watt on the plane

Air-sampling flasks used during HIPPO flights; researcher Andy Watt tends them.

Credit: UCAR


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Geoscientist Ralph Keeling replaces used flasks filled with air samples

Geoscientist Ralph Keeling replaces used flasks filled with air samples, with new flasks.

Credit: UCAR


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The Gulfstream V taxis into Anchorage

The Gulfstream V taxis into Anchorage after a HIPPO flight to the North Pole.

Credit: UCAR


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cover of Science magazine

The researchers' findings are described in the Aug. 9, 2013, issue of the journal Science.

Credit: Copyright AAAS 2013


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