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Southern Ocean plays key role in marine carbon distribution

Carbon composition is a combined signal of ocean circulation and local biological and chemical processes, a new study shows, drawing special attention to the Southern Ocean.

Anne_sediment-core
Sediment cores.
Photo:
Hannes Grobe [CC BY 3.0 (https://creativecommons.org/licenses/by/3.0)], from Wikimedia Commons.

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By Anne Lien MoreePublished: 18.01.2019

The past climate system can be studied using marine sediment records like the ones in the picture. Often, records of an isotope of carbon (13C) are used. Anne Mor茅e, and Christoph Heinze show in their latest聽聽that scientists should interpret 13C records as a combined signal of ocean circulation and local biological and chemical processes, and that the Southern Ocean plays a key role in setting the marine 13C distribution.聽

Reference

Anne L. Mor茅e, J枚rg Schwinger, and Christoph Heinze: Southern Ocean controls of the vertical marine 未13C gradient 鈥� a modelling study. Biogeosciences, 15, 7205-7223, 2018.聽

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