Articles | Volume 11, issue 9
https://doi.org/10.5194/gmd-11-3537-2018
https://doi.org/10.5194/gmd-11-3537-2018
Model description paper
 | 
31 Aug 2018
Model description paper |  | 31 Aug 2018

A global scavenging and circulation ocean model of thorium-230 and protactinium-231 with improved particle dynamics (NEMO–ProThorP 0.1)

Marco van Hulten, Jean-Claude Dutay, and Matthieu Roy-Barman

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Latest update: 24 Feb 2024
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Short summary
We present an ocean model of the natural radioactive isotopes thorium-230 and protactinium-231. These isotopes are often used to investigate past ocean circulation and particle transport. They are removed by particles produced by plankton and from uplifted desert dust that is deposited into the ocean. We approach observed dissolved and adsorbed Th-230 and Pa-231 activities. The Pa-231 / Th-230 sedimentation ratio is reproduced as well; this quantity can be used as a proxy for ocean circulation.