Journal article Open Access

Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific

Daniele Iudicone; Richard D. Slater; Laure Resplandy; Keith B. Rodgers; Jorge L. Sarmiento; Stephen M. Griffies; Ping Zhai


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  <identifier identifierType="URL">https://www.openaccessrepository.it/record/77297</identifier>
  <creators>
    <creator>
      <creatorName>Daniele Iudicone</creatorName>
    </creator>
    <creator>
      <creatorName>Richard D. Slater</creatorName>
    </creator>
    <creator>
      <creatorName>Laure Resplandy</creatorName>
    </creator>
    <creator>
      <creatorName>Keith B. Rodgers</creatorName>
    </creator>
    <creator>
      <creatorName>Jorge L. Sarmiento</creatorName>
    </creator>
    <creator>
      <creatorName>Stephen M. Griffies</creatorName>
    </creator>
    <creator>
      <creatorName>Ping Zhai</creatorName>
    </creator>
  </creators>
  <titles>
    <title>Mechanistic Drivers of Reemergence of Anthropogenic Carbon in the Equatorial Pacific</title>
  </titles>
  <publisher>INFN Open Access Repository</publisher>
  <publicationYear>2017</publicationYear>
  <subjects>
    <subject>European Marine Science</subject>
    <subject>NEANIAS Atmospheric Research Community</subject>
    <subject>Knowmad Institut</subject>
    <subject>General Earth and Planetary Sciences</subject>
    <subject>Geophysics</subject>
  </subjects>
  <dates>
    <date dateType="Issued">2017-09-22</date>
  </dates>
  <language>en</language>
  <resourceType resourceTypeGeneral="Text">Journal article</resourceType>
  <alternateIdentifiers>
    <alternateIdentifier alternateIdentifierType="url">https://www.openaccessrepository.it/record/77297</alternateIdentifier>
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  <relatedIdentifiers>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsIdenticalTo">10.1002/2017gl073758</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf">https://www.openaccessrepository.it/communities/itmirror</relatedIdentifier>
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  <rightsList>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
  </rightsList>
  <descriptions>
    <description descriptionType="Abstract">AbstractRelatively rapid reemergence of anthropogenic carbon (Cant) in the Equatorial Pacific is of potential importance for its impact on the carbonate buffering capacity of surface seawater and thereby impeding the ocean's ability to further absorb Cant from the atmosphere. We explore the mechanisms sustaining Cant reemergence (upwelling) from the thermocline to surface layers by applying water mass transformation diagnostics to a global ocean/sea ice/biogeochemistry model. We find that the upwelling rate of Cant (0.4 PgC yr−1) from the thermocline to the surface layer is almost twice as large as air‐sea Cant fluxes (0.203 PgC yr−1). The upwelling of Cant from the thermocline to the surface layer can be understood as a two‐step process: The first being due to diapycnal diffusive transformation fluxes and the second due to surface buoyancy fluxes. We also find that this reemergence of Cant decreases dramatically during the 1982/1983 and 1997/1998 El Niño events.</description>
  </descriptions>
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