Carbon export and sequestration in the southern Benguela upwelling system: lower and upper estimates

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dc.contributor.authorWaldron, H N
dc.contributor.authorMonteiro, P M S
dc.contributor.authorSwart, N C
dc.date.accessioned2021-10-08T07:08:30Z
dc.date.available2021-10-08T07:08:30Z
dc.date.issued2009
dc.description.abstractThree independent studies of carbon export and sequestration in the southern Benguela upwelling system are presented. They were undertaken by Waldron (upwelling index), Monteiro (discrete upwelling centres – gate hypothesis model) and Swart (cross-shelf advection in bottom nelpheloid layers). The annual estimates were, 3.9×10<sup>13</sup>, 0.72×10<sup>13</sup> and 8.6×10<sup>11</sup> gC respectively. The lowest estimate was derived from a consideration of low frequency lateral carbon export in the bottom nepheloid layer and was thought likely to be an under-estimate. Taking into account high frequency episodic events, intermediate nepheloid layers and along isopycnal export of DOC at surface and intermediate depths was thought likely to result in a substantial upward revision. The remaining two estimates were considered to be an upper and lower estimate of carbon export and sequestration due to factors inherent in the methodologies. The upper estimate presents a two-dimensional system, integrated alongshore; the lower estimate sums a series of upwelling centres in order to obtain a system flux. The former is therefore a uniform extrapolation along the coast while the latter omits upwelling between the upwelling centres.
dc.identifier.apacitationWaldron, H. N., Monteiro, P. M. S., & Swart, N. C. (2009). Carbon export and sequestration in the southern Benguela upwelling system: lower and upper estimates. <i>Ocean Science</i>, 5(4), 711 - 718. http://hdl.handle.net/11427/34593en_ZA
dc.identifier.chicagocitationWaldron, H N, P M S Monteiro, and N C Swart "Carbon export and sequestration in the southern Benguela upwelling system: lower and upper estimates." <i>Ocean Science</i> 5, 4. (2009): 711 - 718. http://hdl.handle.net/11427/34593en_ZA
dc.identifier.citationWaldron, H.N., Monteiro, P.M.S. & Swart, N.C. 2009. Carbon export and sequestration in the southern Benguela upwelling system: lower and upper estimates. <i>Ocean Science.</i> 5(4):711 - 718. http://hdl.handle.net/11427/34593en_ZA
dc.identifier.issn1812-0784
dc.identifier.issn1812-0792
dc.identifier.ris TY - Journal Article AU - Waldron, H N AU - Monteiro, P M S AU - Swart, N C AB - Three independent studies of carbon export and sequestration in the southern Benguela upwelling system are presented. They were undertaken by Waldron (upwelling index), Monteiro (discrete upwelling centres – gate hypothesis model) and Swart (cross-shelf advection in bottom nelpheloid layers). The annual estimates were, 3.9×10<sup>13</sup>, 0.72×10<sup>13</sup> and 8.6×10<sup>11</sup> gC respectively. The lowest estimate was derived from a consideration of low frequency lateral carbon export in the bottom nepheloid layer and was thought likely to be an under-estimate. Taking into account high frequency episodic events, intermediate nepheloid layers and along isopycnal export of DOC at surface and intermediate depths was thought likely to result in a substantial upward revision. The remaining two estimates were considered to be an upper and lower estimate of carbon export and sequestration due to factors inherent in the methodologies. The upper estimate presents a two-dimensional system, integrated alongshore; the lower estimate sums a series of upwelling centres in order to obtain a system flux. The former is therefore a uniform extrapolation along the coast while the latter omits upwelling between the upwelling centres. DA - 2009 DB - OpenUCT DP - University of Cape Town IS - 4 J1 - Ocean Science LK - https://open.uct.ac.za PY - 2009 SM - 1812-0784 SM - 1812-0792 T1 - Carbon export and sequestration in the southern Benguela upwelling system: lower and upper estimates TI - Carbon export and sequestration in the southern Benguela upwelling system: lower and upper estimates UR - http://hdl.handle.net/11427/34593 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34593
dc.identifier.vancouvercitationWaldron HN, Monteiro PMS, Swart NC. Carbon export and sequestration in the southern Benguela upwelling system: lower and upper estimates. Ocean Science. 2009;5(4):711 - 718. http://hdl.handle.net/11427/34593.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Oceanography
dc.publisher.facultyFaculty of Science
dc.sourceOcean Science
dc.source.journalissue4
dc.source.journalvolume5
dc.source.pagination711 - 718
dc.source.urihttps://dx.doi.org/10.5194/os-5-711-2009
dc.subject.otherBurns
dc.subject.otherDisaster Planning
dc.subject.otherHumans
dc.subject.otherMass Casualty Incidents
dc.subject.otherNational Health Programs
dc.subject.otherPractice Guidelines as Topic
dc.subject.otherSocieties, Medical
dc.subject.otherSouth Africa
dc.titleCarbon export and sequestration in the southern Benguela upwelling system: lower and upper estimates
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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