Articles | Volume 15, issue 23
https://doi.org/10.5194/bg-15-7299-2018
https://doi.org/10.5194/bg-15-7299-2018
Research article
 | 
10 Dec 2018
Research article |  | 10 Dec 2018

Evolution of 231Pa and 230Th in overflow waters of the North Atlantic

Feifei Deng, Gideon M. Henderson, Maxi Castrillejo, Fiz F. Perez, and Reiner Steinfeldt

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Latest update: 19 Jul 2024
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Short summary
To better use Pa / Th to reconstruct deep water ventilation rate, we assessed controls on 230Th and 231Pa in the northern North Atlantic. With extended optimum multi-parameter analysis and CFC-based water-mass age, we found the imprint of young overflow water on Th and Pa and enhanced scavenging near the seafloor. A significantly higher advective loss of Pa to the south relative to Th in the Atlantic was estimated, supporting the use of Pa / Th for assessing basin-scale meridional transport.
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