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Detecting the oceanic CO2 sink today and in the future

The ocean has steadily taken up excess anthropogenic CO2 from the atmosphere but a slow down is expected in various parts of the ocean. The current observational network needs to be improved to monitor these changes.

The surface ocean partial pressure of CO2 (pCO2) can be directly measured and is an indicator of long-term climate change and the ocean carbon uptake. Our study aims to quantify the long-term growth rate of surface pCO2 over various large-scale ocean domains.

 

Using latest collection of pCO2 data and state-of-the-art Earth system models, we confirm that the ocean pCO2 has steadily increased following the atmospheric CO2 concentration in the past four decades.

A large portion of this increase is attributed to the ongoing invasion of anthropogenic CO2 into the ocean, whereas increase in sea surface temperature contributes only marginally.

 

Read more at the Uni Research website here.

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