Is the southern Benguela a significant regional sink of CO2?

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dc.contributor.authorGregor, Luke
dc.contributor.authorMonteiro, Pedro M S
dc.date.accessioned2021-10-08T07:16:07Z
dc.date.available2021-10-08T07:16:07Z
dc.date.issued2013
dc.description.abstractThis study was undertaken to characterise the seasonal cycle of air-sea fluxes of carbon dioxide (CO2) in the southern Benguela upwelling system off the South African west coast. Samples were collected from six monthly cross-shelf cruises in the St. Helena Bay region during 2010. CO2 fluxes were calculated from pCO2 derived from total alkalinity and dissolved inorganic carbon and scatterometer-based winds. Notwithstanding that it is one of the most biologically productive eastern boundary upwelling systems in the global ocean, the southern Benguela was found to be a very small net annual CO2 sink of -1.4 ± 0.6 mol C/m2 per year (1.7 Mt C/year). Regional primary productivity was offset by nearly equal rates of sediment and sub-thermocline remineralisation flux of CO2, which is recirculated to surface waters by upwelling. The juxtaposition of the strong, narrow near-shore out-gassing region and the larger, weaker offshore sink resulted in the shelf area being a weak CO2 sink in all seasons but autumn (-5.8, 1.4 and -3.4 mmol C/m2 per day for summer, autumn and winter, respectively).
dc.identifier.apacitationGregor, L., & Monteiro, P. M. S. (2013). Is the southern Benguela a significant regional sink of CO2?. <i>South African Journal of Science</i>, 109(43226), 1 - 5. http://hdl.handle.net/11427/34773en_ZA
dc.identifier.chicagocitationGregor, Luke, and Pedro M S Monteiro "Is the southern Benguela a significant regional sink of CO2?." <i>South African Journal of Science</i> 109, 43226. (2013): 1 - 5. http://hdl.handle.net/11427/34773en_ZA
dc.identifier.citationGregor, L. & Monteiro, P.M.S. 2013. Is the southern Benguela a significant regional sink of CO2?. <i>South African Journal of Science.</i> 109(43226):1 - 5. http://hdl.handle.net/11427/34773en_ZA
dc.identifier.issn0038-2353
dc.identifier.issn1996-7489
dc.identifier.ris TY - Journal Article AU - Gregor, Luke AU - Monteiro, Pedro M S AB - This study was undertaken to characterise the seasonal cycle of air-sea fluxes of carbon dioxide (CO2) in the southern Benguela upwelling system off the South African west coast. Samples were collected from six monthly cross-shelf cruises in the St. Helena Bay region during 2010. CO2 fluxes were calculated from pCO2 derived from total alkalinity and dissolved inorganic carbon and scatterometer-based winds. Notwithstanding that it is one of the most biologically productive eastern boundary upwelling systems in the global ocean, the southern Benguela was found to be a very small net annual CO2 sink of -1.4 ± 0.6 mol C/m2 per year (1.7 Mt C/year). Regional primary productivity was offset by nearly equal rates of sediment and sub-thermocline remineralisation flux of CO2, which is recirculated to surface waters by upwelling. The juxtaposition of the strong, narrow near-shore out-gassing region and the larger, weaker offshore sink resulted in the shelf area being a weak CO2 sink in all seasons but autumn (-5.8, 1.4 and -3.4 mmol C/m2 per day for summer, autumn and winter, respectively). DA - 2013 DB - OpenUCT DP - University of Cape Town IS - 43226 J1 - South African Journal of Science LK - https://open.uct.ac.za PY - 2013 SM - 0038-2353 SM - 1996-7489 T1 - Is the southern Benguela a significant regional sink of CO2? TI - Is the southern Benguela a significant regional sink of CO2? UR - http://hdl.handle.net/11427/34773 ER - en_ZA
dc.identifier.urihttp://hdl.handle.net/11427/34773
dc.identifier.vancouvercitationGregor L, Monteiro PMS. Is the southern Benguela a significant regional sink of CO2?. South African Journal of Science. 2013;109(43226):1 - 5. http://hdl.handle.net/11427/34773.en_ZA
dc.language.isoeng
dc.publisher.departmentDepartment of Oceanography
dc.publisher.facultyFaculty of Science
dc.sourceSouth African Journal of Science
dc.source.journalissue43226
dc.source.journalvolume109
dc.source.pagination1 - 5
dc.source.urihttps://dx.doi.org/10.1590/sajs.2013/20120094
dc.subject.otherSouthern Benguela
dc.subject.otherEastern boundary
dc.subject.otherCarbon dioxide
dc.subject.otherOcean-atmosphere interaction
dc.subject.otherCO2
dc.subject.otherSediments
dc.subject.otherArticle
dc.titleIs the southern Benguela a significant regional sink of CO2?
dc.typeJournal Article
uct.type.publicationResearch
uct.type.resourceJournal Article
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