Major processes of the dissolved cobalt cycle in the North and equatorial Pacific Ocean

Chmiel, Rebecca; Lanning, Nathan; Laubach, Allison; Lee, Jong-Mi; Fitzsimmons, Jessica; Hatta, Mariko; Jenkins, William; Lam, Phoebe; McIlvin, Matthew; Tagliabue, Alessandro; Saito, Mak

doi:https://doi.org/10.5194/bg-19-2365-2022

Articles | Volume 19, issue 9

https://doi.org/10.5194/bg-19-2365-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/bg-19-2365-2022

© Author(s) 2022. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 9

Research article

|

05 May 2022

Research article |

| 05 May 2022

Major processes of the dissolved cobalt cycle in the North and equatorial Pacific Ocean

Rebecca Chmiel, Nathan Lanning, Allison Laubach, Jong-Mi Lee, Jessica Fitzsimmons, Mariko Hatta, William Jenkins, Phoebe Lam, Matthew McIlvin, Alessandro Tagliabue, and Mak Saito

Data sets

Dissolved Cobalt and Labile Cobalt from Leg 1 (Seattle, WA to Hilo, HI) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1814) on R/V Roger Revelle from September to October 2018 Mak A. Saito https://doi.org/10.26008/1912/bco-dmo.818383.2

Dissolved Cobalt and Labile Cobalt from Leg 2 (Hilo, HI to Papeete, French Polynesia) of the US GEOTRACES Pacific Meridional Transect (PMT) cruise (GP15, RR1815) on R/V Roger Revelle from October to November 2018 Mak A. Saito https://doi.org/10.26008/1912/bco-dmo.818610.1

Bottle file from Leg 1 K. L. Casciotti, G. A. Cutter, and P. J. Lam https://doi.org/10.26008/1912/bco-dmo.777951.6

Bottle file from Leg 2 K. L. Casciotti, G. A. Cutter, and P. J. Lam https://doi.org/10.26008/1912/bco-dmo.824867.5

Model code and software

"GP15'' R. Chmiel https://github.com/rebecca-chmiel/GP15

Short summary

Dissolved cobalt is present in trace amounts in seawater and is a necessary nutrient for marine microbes. On a transect from the Alaskan coast to Tahiti, we measured seawater concentrations of dissolved cobalt. Here, we describe several interesting features of the Pacific cobalt cycle including cobalt sources along the Alaskan coast and Hawaiian vents, deep-ocean particle formation, cobalt activity in low-oxygen regions, and how our samples compare to a global biogeochemical model’s predictions.