Decrease in the CO2 uptake capacity in an ice-free Arctic Ocean basin

Science
Wei-Jun CaiHaisheng Zhang

Abstract

It has been predicted that the Arctic Ocean will sequester much greater amounts of carbon dioxide (CO2) from the atmosphere as a result of sea ice melt and increasing primary productivity. However, this prediction was made on the basis of observations from either highly productive ocean margins or ice-covered basins before the recent major ice retreat. We report here a high-resolution survey of sea-surface CO2 concentration across the Canada Basin, showing a great increase relative to earlier observations. Rapid CO2 invasion from the atmosphere and low biological CO2 drawdown are the main causes for the higher CO2, which also acts as a barrier to further CO2 invasion. Contrary to the current view, we predict that the Arctic Ocean basin will not become a large atmospheric CO2 sink under ice-free conditions.

References

May 8, 2004·Science·Dennis A HansellNicholas R Bates
Nov 11, 2009·Science·William K W LiEddy C Carmack

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Citations

Feb 22, 2014·Ecological Applications : a Publication of the Ecological Society of America·A D McGuireM Sturm
Sep 8, 2012·Ecology and Evolution·James G Maccracken
Nov 8, 2014·Photochemical & Photobiological Sciences : Official Journal of the European Photochemistry Association and the European Society for Photobiology·David J EricksonAmy T Austin
Apr 26, 2016·Environmental Science & Technology·Barbara Sulzberger, J Samuel Arey
Dec 21, 2016·Scientific Reports·Peng Lin, Laodong Guo
May 30, 2019·Biosensors·Alexandra PoturnayováTibor Hianik
Jul 31, 2020·Geophysical Research Letters·Michael DeGrandpreMichael Steele

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