Dissolved organic carbon pools and export from the coastal ocean

Handle URI:
http://hdl.handle.net/10754/582468
Title:
Dissolved organic carbon pools and export from the coastal ocean
Authors:
Barrón, Cristina; Duarte, Carlos M. ( 0000-0002-1213-1361 )
Abstract:
The distribution of dissolved organic carbon (DOC) concentration across coastal waters was characterized based on the compilation of 3510 individual estimates of DOC in coastal waters worldwide. We estimated the DOC concentration in the coastal waters that directly exchange with open ocean waters in two different ways, as the DOC concentration at the edge of the shelf break and as the DOC concentration in coastal waters with salinity close to the average salinity in the open ocean. Using these estimates of DOC concentration in the coastal waters that directly exchange with open ocean waters, the mean DOC concentration in the open ocean and the estimated volume of water annually exchanged between coastal and open ocean, we estimated a median ± SE (and average ± SE) global DOC export from coastal to open ocean waters ranging from 4.4 ± 1.0 Pg C yr−1 to 27.0 ± 1.8 Pg C yr−1 (7.0 ± 5.8 Pg C yr−1 to 29.0 ± 8.0 Pg C yr−1) depending on the global hydrological exchange. These values correspond to a median and mean median (and average) range between 14.7 ± 3.3 to 90.0 ± 6.0 (23.3 ± 19.3 to 96.7 ± 26.7) Gg C yr−1 per km of shelf break, which is consistent with the range between 1.4 to 66.1 Gg C yr−1 per km of shelf break of available regional estimates of DOC export. The estimated global DOC export from coastal to open ocean waters is also consistent with independent estimates of the net metabolic balance of the coastal ocean. The DOC export from the coastal to the open ocean is likely to be a sizeable flux and is likely to be an important term in the carbon budget of the open ocean, potentially providing an important subsidy to support heterotrophic activity in the open ocean.
KAUST Department:
Red Sea Research Center (RSRC)
Citation:
Dissolved organic carbon pools and export from the coastal ocean 2015, 29 (10):1725 Global Biogeochemical Cycles
Publisher:
Wiley-Blackwell
Journal:
Global Biogeochemical Cycles
Issue Date:
21-Oct-2015
DOI:
10.1002/2014GB005056
Type:
Article
ISSN:
08866236
Additional Links:
http://doi.wiley.com/10.1002/2014GB005056
Appears in Collections:
Articles; Red Sea Research Center (RSRC)

Full metadata record

DC FieldValue Language
dc.contributor.authorBarrón, Cristinaen
dc.contributor.authorDuarte, Carlos M.en
dc.date.accessioned2015-11-22T11:55:27Zen
dc.date.available2015-11-22T11:55:27Zen
dc.date.issued2015-10-21en
dc.identifier.citationDissolved organic carbon pools and export from the coastal ocean 2015, 29 (10):1725 Global Biogeochemical Cyclesen
dc.identifier.issn08866236en
dc.identifier.doi10.1002/2014GB005056en
dc.identifier.urihttp://hdl.handle.net/10754/582468en
dc.description.abstractThe distribution of dissolved organic carbon (DOC) concentration across coastal waters was characterized based on the compilation of 3510 individual estimates of DOC in coastal waters worldwide. We estimated the DOC concentration in the coastal waters that directly exchange with open ocean waters in two different ways, as the DOC concentration at the edge of the shelf break and as the DOC concentration in coastal waters with salinity close to the average salinity in the open ocean. Using these estimates of DOC concentration in the coastal waters that directly exchange with open ocean waters, the mean DOC concentration in the open ocean and the estimated volume of water annually exchanged between coastal and open ocean, we estimated a median ± SE (and average ± SE) global DOC export from coastal to open ocean waters ranging from 4.4 ± 1.0 Pg C yr−1 to 27.0 ± 1.8 Pg C yr−1 (7.0 ± 5.8 Pg C yr−1 to 29.0 ± 8.0 Pg C yr−1) depending on the global hydrological exchange. These values correspond to a median and mean median (and average) range between 14.7 ± 3.3 to 90.0 ± 6.0 (23.3 ± 19.3 to 96.7 ± 26.7) Gg C yr−1 per km of shelf break, which is consistent with the range between 1.4 to 66.1 Gg C yr−1 per km of shelf break of available regional estimates of DOC export. The estimated global DOC export from coastal to open ocean waters is also consistent with independent estimates of the net metabolic balance of the coastal ocean. The DOC export from the coastal to the open ocean is likely to be a sizeable flux and is likely to be an important term in the carbon budget of the open ocean, potentially providing an important subsidy to support heterotrophic activity in the open ocean.en
dc.language.isoenen
dc.publisherWiley-Blackwellen
dc.relation.urlhttp://doi.wiley.com/10.1002/2014GB005056en
dc.rightsArchived with thanks to Global Biogeochemical Cycles. An edited version of this paper was published by AGU. Copyright (2015) American Geophysical Union.en
dc.titleDissolved organic carbon pools and export from the coastal oceanen
dc.typeArticleen
dc.contributor.departmentRed Sea Research Center (RSRC)en
dc.identifier.journalGlobal Biogeochemical Cyclesen
dc.eprint.versionPublisher's Version/PDFen
dc.contributor.institutionGriffith School of Environment, Australian Rivers Institute-Coast and Estuaries; Nathan Campus, Griffith University; Brisbane Queensland Australiaen
dc.contributor.institutionDepartment of Global Change Research; Instituto Mediterráneo de Estudios Avanzados; Esporles Spainen
dc.contributor.affiliationKing Abdullah University of Science and Technology (KAUST)en
kaust.authorDuarte, Carlos M.en
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