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Ocean sink for man-made CO₂ measured
https://www.ethz.ch/en/news-and-events/eth-news/news/2019/03/marine-senke-fuer-co2-bestimmt.htmlOcean sink for man-made CO₂ measured
14.03.2019 | News
By: Michael Keller | 1 Comment
An international research project led by scientists from ETH Zurich has determined the amount of man-made CO₂ emissions taken up by the ocean between 1994 and 2007.
…
The marine sink is intact
This percentage of CO₂ taken up by the oceans has remained relatively stable compared to the preceding 200 years, but the absolute quantity has increased substantially. This is because as long as the atmospheric concentration of CO₂ rises, the oceanic sink strengthens more or less proportionally: the more CO₂ is in the atmosphere, the more is absorbed by the oceans – until it becomes eventually saturated.
So far, that point has not been reached. “Over the examined period, the global ocean continued to take up anthropogenic CO₂ at a rate that is congruent with the increase of atmospheric CO₂ ,” Gruber explains.
These data-based research findings also confirm various earlier, model-based estimates of the ocean sink for man-made CO₂. “This is an important insight, giving us confidence that our approaches have been correct,” Gruber adds. The results further allow the researchers to draw conclusions about the CO₂ sink of the ecosystems on land, which are more difficult to determine.
…
https://dx.doi.org/10.1126/science.aau515314.03.2019 | News
By: Michael Keller | 1 Comment
An international research project led by scientists from ETH Zurich has determined the amount of man-made CO₂ emissions taken up by the ocean between 1994 and 2007.
…
The marine sink is intact
This percentage of CO₂ taken up by the oceans has remained relatively stable compared to the preceding 200 years, but the absolute quantity has increased substantially. This is because as long as the atmospheric concentration of CO₂ rises, the oceanic sink strengthens more or less proportionally: the more CO₂ is in the atmosphere, the more is absorbed by the oceans – until it becomes eventually saturated.
So far, that point has not been reached. “Over the examined period, the global ocean continued to take up anthropogenic CO₂ at a rate that is congruent with the increase of atmospheric CO₂ ,” Gruber explains.
These data-based research findings also confirm various earlier, model-based estimates of the ocean sink for man-made CO₂. “This is an important insight, giving us confidence that our approaches have been correct,” Gruber adds. The results further allow the researchers to draw conclusions about the CO₂ sink of the ecosystems on land, which are more difficult to determine.
…