Dissolved and Particulate Barium Distributions Along the US GEOTRACES North Atlantic and East Pacific Zonal Transects (GA03 and GP16): Global Implications for the Marine Barium Cycle

Rahman, Shaily; Shiller, Alan M.; Anderson, Robert F.; Charette, Matthew A.; Hayes, Christopher T.; Gilbert, Melissa; Grissom, Karen R.; Lam, Phoebe J.; Ohnemus, Daniel C.; Pavia, Frank J.; Twining, Benjamin S.; Vivancos, Sebastian M.

doi:10.1029/2022gb007330

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Dissolved and Particulate Barium Distributions Along the US GEOTRACES North Atlantic and East Pacific Zonal Transects (GA03 and GP16): Global Implications for the Marine Barium Cycle

2022
By Rahman, Shaily ; Shiller, Alan M. ; Anderson, Robert F. ; ...
Source: Global Biogeochemical Cycles, 36(6)

[PDF-2.77 MB]

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Journal Title:

Global Biogeochemical Cycles
Personal Author:

Rahman, Shaily ; Shiller, Alan M. ; Anderson, Robert F. ; Charette, Matthew A. ; Hayes, Christopher T. ; ... More +

Rahman, Shaily ; Shiller, Alan M. ; Anderson, Robert F. ; Charette, Matthew A. ; Hayes, Christopher T. ; Gilbert, Melissa ; Grissom, Karen R. ; Lam, Phoebe J. ; Ohnemus, Daniel C. ; Pavia, Frank J. ; Twining, Benjamin S. ; Vivancos, Sebastian M. Less -
NOAA Program & Office:

NESDIS (National Environmental Satellite, Data, and Information Service) ; NWS (National Weather Service) ; NCEI (National Centers for Environmental Information)

NESDIS (National Environmental Satellite, Data, and Information Service) ; NWS (National Weather Service) ; NCEI (National Centers for Environmental Information) Less -
Description:

Processes controlling dissolved barium (dBa) were investigated along the GEOTRACES GA03 North Atlantic and GP16 Eastern Tropical Pacific transects, which traversed similar physical and biogeochemical provinces. Dissolved Ba concentrations are lowest in surface waters (∼35–50 nmol kg −1) and increase to 70–80 and 140–150 nmol kg −1 in deep waters of the Atlantic and Pacific transects, respectively. Using water mass mixing models, we estimate conservative mixing that accounts for most of dBa variability in both transects. To examine nonconservative processes, particulate excess Ba (pBaxs) formation and dissolution rates were tracked by normalizing particulate excess 230Th activities. Th-normalized pBaxs fluxes, with barite
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Atmospheric Science Environmental Chemistry General Environmental Science Global And Planetary Change
Source:

Global Biogeochemical Cycles, 36(6)
DOI:

https://doi.org/10.1029/2022gb007330
ISSN:

0886-6236;1944-9224;
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PDF
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American Geophysical Union (AGU)
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Journal Article
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https://creativecommons.org/licenses/by/4.0/
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CC BY
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urn:sha256:5b2fe2b102e7a364f143a14891f870a1905e05c8ccd27cc75eaadb74a68d2631
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https://repository.library.noaa.gov/view/noaa/54436/noaa_54436_DS1.pdf
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