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Show simple item record Gregor, L Monteiro, Pedro MS 2014-06-17T10:32:04Z 2014-06-17T10:32:04Z 2013-05
dc.identifier.citation Gregor, L and Monteiro, P.M.S. 2013. Is the Southern Benguela a significant regional sink of CO2? South African Journal of Science, vol. 109(5/6), pp 1-5 en_US
dc.identifier.issn 0038-2353
dc.description Copyright: 2013 AOSIS OpenJournals. This is an Open Access journal. The journal authorizes the publication of the information herewith contained. Published in AOSIS OpenJournals en_US
dc.description.abstract This study was undertaken to characterise the seasonal cycle of air–sea fluxes of carbon dioxide (CO(sub2)) 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. CO(sub2) fluxes were calculated from pCO(sub2) 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 CO(sub2) sink of -1.4 ± 0.6 mol C/m(sup2) per year (1.7 Mt C/year). Regional primary productivity was offset by nearly equal rates of sediment and sub-thermocline remineralisation flux of CO(sub2), 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 CO(sub2) sink in all seasons but autumn (-5.8, 1.4 and -3.4 mmol C/m(sup2) per day for summer, autumn and winter, respectively). en_US
dc.language.iso en en_US
dc.publisher AOSIS OpenJournals en_US
dc.relation.ispartofseries Workflow;12745
dc.subject Southern Benguela en_US
dc.subject Eastern boundary en_US
dc.subject Carbon dioxide en_US
dc.subject Ocean-atmosphere interaction en_US
dc.subject CO2 en_US
dc.subject Sediments en_US
dc.title Is the Southern Benguela a significant regional sink of CO2? en_US
dc.type Article en_US

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