• Login
    About WHOAS
    View Item 
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Marine Chemistry and Geochemistry (MC&G)
    • View Item
    •   WHOAS Home
    • Woods Hole Oceanographic Institution
    • Marine Chemistry and Geochemistry (MC&G)
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of WHOASCommunities & CollectionsBy Issue DateAuthorsTitlesKeywordsThis CollectionBy Issue DateAuthorsTitlesKeywords

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Mechanisms controlling dissolved iron distribution in the North Pacific : a model study

    Thumbnail
    View/Open
    2010JG001541.pdf (2.974Mb)
    Date
    2011-07-22
    Author
    Misumi, Kazuhiro  Concept link
    Tsumune, Daisuke  Concept link
    Yoshida, Yoshikatsu  Concept link
    Uchimoto, K.  Concept link
    Nakamura, T.  Concept link
    Nishioka, Jun  Concept link
    Mitsudera, Humio  Concept link
    Bryan, Frank O.  Concept link
    Lindsay, Keith  Concept link
    Moore, J. Keith  Concept link
    Doney, Scott C.  Concept link
    Metadata
    Show full item record
    Citable URI
    https://hdl.handle.net/1912/4746
    As published
    https://doi.org/10.1029/2010JG001541
    DOI
    10.1029/2010JG001541
    Keyword
     Pacific; Iron; Modeling 
    Abstract
    Mechanisms controlling the dissolved iron distribution in the North Pacific are investigated using the Biogeochemical Elemental Cycling (BEC) model with a resolution of approximately 1° in latitude and longitude and 60 vertical levels. The model is able to reproduce the general distribution of iron as revealed in available field data: surface concentrations are generally below 0.2 nM; concentrations increase with depth; and values in the lower pycnocline are especially high in the northwestern Pacific and off the coast of California. Sensitivity experiments changing scavenging regimes and external iron sources indicate that lateral transport of sedimentary iron from continental margins into the open ocean causes the high concentrations in these regions. This offshore penetration only appears under a scavenging regime where iron has a relatively long residence time at high concentrations, namely, the order of years. Sedimentary iron is intensively supplied around continental margins, resulting in locally high concentrations; the residence time with respect to scavenging determines the horizontal scale of elevated iron concentrations. Budget analysis for iron reveals the processes by which sedimentary iron is transported to the open ocean. Horizontal mixing transports sedimentary iron from the boundary into alongshore currents, which then carry high iron concentrations into the open ocean in regions where the alongshore currents separate from the coast, most prominently in the northwestern Pacific and off of California.
    Description
    Author Posting. © American Geophysical Union, 2011. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Journal of Geophysical Research 116 (2011): G03005, doi:10.1029/2010JG001541.
    Collections
    • Marine Chemistry and Geochemistry (MC&G)
    Suggested Citation
    Journal of Geophysical Research 116 (2011): G03005
     

    Related items

    Showing items related by title, author, creator and subject.

    • Thumbnail

      Assessing the uncertainties of model estimates of primary productivity in the tropical Pacific Ocean 

      Friedrichs, Marjorie A. M.; Carr, Mary-Elena; Barber, Richard T.; Scardi, Michele; Antoine, David; Armstrong, Robert A.; Asanuma, Ichio; Behrenfeld, Michael J.; Buitenhuis, Erik T.; Chai, Fei; Christian, James R.; Ciotti, Aurea M.; Doney, Scott C.; Dowell, Mark; Dunne, John P.; Gentili, Bernard; Gregg, Watson; Hoepffner, Nicolas; Ishizaka, Joji; Kameda, Takahiko; Lima, Ivan D.; Marra, John F.; Melin, Frederic; Moore, J. Keith; Morel, Andre; O'Malley, Robert T.; O'Reilly, Jay; Saba, Vincent S.; Schmeltz, Marjorie; Smyth, Tim J.; Tjiputra, Jerry; Waters, Kirk; Westberry, Toby K.; Winguth, Arne (2008-03)
      Depth-integrated primary productivity (PP) estimates obtained from satellite ocean color based models (SatPPMs) and those generated from biogeochemical ocean general circulation models (BOGCMs) represent a key resource ...
    • Thumbnail

      Desert dust and anthropogenic aerosol interactions in the Community Climate System Model coupled-carbon-climate model 

      Mahowald, Natalie M.; Lindsay, Keith; Rothenberg, D.; Doney, Scott C.; Moore, J. Keith; Thornton, Peter E.; Randerson, James T.; Jones, C. D. (Copernicus Publications on behalf of the European Geosciences Union, 2011-02-15)
      Coupled-carbon-climate simulations are an essential tool for predicting the impact of human activity onto the climate and biogeochemistry. Here we incorporate prognostic desert dust and anthropogenic aerosols into the ...
    • Thumbnail

      Skill metrics for confronting global upper ocean ecosystem-biogeochemistry models against field and remote sensing data 

      Doney, Scott C.; Lima, Ivan D.; Moore, J. Keith; Lindsay, Keith; Behrenfeld, Michael J.; Westberry, Toby K.; Mahowald, Natalie M.; Glover, David M.; Takahashi, Taro (2008-03-04)
      We present a generalized framework for assessing the skill of global upper ocean ecosystem-biogeochemical models against in-situ field data and satellite observations. We illustrate the approach utilizing a multi-decade ...
    All Items in WHOAS are protected by original copyright, with all rights reserved, unless otherwise indicated. WHOAS also supports the use of the Creative Commons licenses for original content.
    A service of the MBLWHOI Library | About WHOAS
    Contact Us | Send Feedback | Privacy Policy
    Core Trust Logo