Winter mesoscale variations of carbonate system parameters and estimates of CO2 fluxes in the Gulf of Cadiz, northeast Atlantic Ocean (February 1998)
Further observations with small spatial and temporal resolutions conducted during different seasons are required in order fully to understand the role that shelves play in the global carbon cycle. The components of the carbonate system (total alkalinity, pH in the total scale, total dissolved inorga...
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Online Access: | http://hdl.handle.net/10553/1519 https://doi.org/10.1029/2001JC001243 |
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ftunivlaspalmas:oai:accedacris.ulpgc.es:10553/1519 2023-05-15T17:32:06+02:00 Winter mesoscale variations of carbonate system parameters and estimates of CO2 fluxes in the Gulf of Cadiz, northeast Atlantic Ocean (February 1998) Santana-Casiano, J. Magdalena González-Dávila, Melchor Dafner, Evgeny V. 6603931257 6701344294 56347585600 QUIMA Química Facultad de Ciencias del Mar 518149 579253 3088720 WOS:Gonzalez-Davila, M WOS:Santana-Casiano, JM WOS:Dafner, EV 2018-03-07T08:57:36Z http://hdl.handle.net/10553/1519 https://doi.org/10.1029/2001JC001243 eng eng Journal of geophysical research. Oceans 108 2169-9291 2068 WoS http://hdl.handle.net/10553/1519 doi:10.1029/2001JC001243 1542347105 000186509700001 350451 2199 C11 info:eu-repo/semantics/openAccess Journal of Geophysical Research C: Oceans [ISSN 2169-9291], v. 108 (C11), 3344 251002 Oceanografía química Gulf of Cadiz Carbon dioxide Flux Dioxide System Mediterranean Outflow Inorganic Carbon Anthropogenic Co2 Sea-Water Gibraltar Strait Ph Alkalinity Exchange info:eu-repo/semantics/Article Article 2018 ftunivlaspalmas https://doi.org/10.1029/2001JC001243 2020-07-07T23:08:12Z Further observations with small spatial and temporal resolutions conducted during different seasons are required in order fully to understand the role that shelves play in the global carbon cycle. The components of the carbonate system (total alkalinity, pH in the total scale, total dissolved inorganic carbon, and CO2 fugacity), and dissolved oxygen, nutrients, and phytopigments were studied along the mesoscale section over the continental shelf and slope in the Gulf of Cadiz in February 1998. All the chemical properties clearly distinguish four different water masses: Gulf of Cadiz Water, North Atlantic Surface Water, North Atlantic Central Water, and Mediterranean Water. From the thermohaline properties and applied chemical conservative tracers for each water mass, a mixing model has been established which explains more than 96% of the variability in the distribution of chemical properties. The relative variation of nutrients and carbon concentrations resulting from the regeneration of organic matter was estimated. The contribution of Mediterranean water to the waters at the traverse of Cadiz varies from 15% to 40% according to this model. The difference of fCO2 between seawater and atmosphere (ΔfCO2 = −35 μatm) shows that the surface seawater in the Gulf of Cadiz is a sink for atmospheric CO2 during winter with an average calculated net CO2 flux across the air‐sea interface of about −19.5 ± 3.5 mmol m−2 d−1. We estimate that at the traverse of Cadiz the shallow core of Mediterranean outflow carries out 1.2 • 104 to 2.4 • 104 mol inorganic carbon s−1. This estimate is 1 order of magnitude lower than that calculated for the Mediterranean outflow in the Strait of Gibraltar. 11 Article in Journal/Newspaper North Atlantic Northeast Atlantic Universidad de Las Palmas de Gran Canaria: Acceda Journal of Geophysical Research 108 C11 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
251002 Oceanografía química Gulf of Cadiz Carbon dioxide Flux Dioxide System Mediterranean Outflow Inorganic Carbon Anthropogenic Co2 Sea-Water Gibraltar Strait Ph Alkalinity Exchange |
spellingShingle |
251002 Oceanografía química Gulf of Cadiz Carbon dioxide Flux Dioxide System Mediterranean Outflow Inorganic Carbon Anthropogenic Co2 Sea-Water Gibraltar Strait Ph Alkalinity Exchange Santana-Casiano, J. Magdalena González-Dávila, Melchor Dafner, Evgeny V. Winter mesoscale variations of carbonate system parameters and estimates of CO2 fluxes in the Gulf of Cadiz, northeast Atlantic Ocean (February 1998) |
topic_facet |
251002 Oceanografía química Gulf of Cadiz Carbon dioxide Flux Dioxide System Mediterranean Outflow Inorganic Carbon Anthropogenic Co2 Sea-Water Gibraltar Strait Ph Alkalinity Exchange |
description |
Further observations with small spatial and temporal resolutions conducted during different seasons are required in order fully to understand the role that shelves play in the global carbon cycle. The components of the carbonate system (total alkalinity, pH in the total scale, total dissolved inorganic carbon, and CO2 fugacity), and dissolved oxygen, nutrients, and phytopigments were studied along the mesoscale section over the continental shelf and slope in the Gulf of Cadiz in February 1998. All the chemical properties clearly distinguish four different water masses: Gulf of Cadiz Water, North Atlantic Surface Water, North Atlantic Central Water, and Mediterranean Water. From the thermohaline properties and applied chemical conservative tracers for each water mass, a mixing model has been established which explains more than 96% of the variability in the distribution of chemical properties. The relative variation of nutrients and carbon concentrations resulting from the regeneration of organic matter was estimated. The contribution of Mediterranean water to the waters at the traverse of Cadiz varies from 15% to 40% according to this model. The difference of fCO2 between seawater and atmosphere (ΔfCO2 = −35 μatm) shows that the surface seawater in the Gulf of Cadiz is a sink for atmospheric CO2 during winter with an average calculated net CO2 flux across the air‐sea interface of about −19.5 ± 3.5 mmol m−2 d−1. We estimate that at the traverse of Cadiz the shallow core of Mediterranean outflow carries out 1.2 • 104 to 2.4 • 104 mol inorganic carbon s−1. This estimate is 1 order of magnitude lower than that calculated for the Mediterranean outflow in the Strait of Gibraltar. 11 |
author2 |
6603931257 6701344294 56347585600 QUIMA Química Facultad de Ciencias del Mar 518149 579253 3088720 WOS:Gonzalez-Davila, M WOS:Santana-Casiano, JM WOS:Dafner, EV |
format |
Article in Journal/Newspaper |
author |
Santana-Casiano, J. Magdalena González-Dávila, Melchor Dafner, Evgeny V. |
author_facet |
Santana-Casiano, J. Magdalena González-Dávila, Melchor Dafner, Evgeny V. |
author_sort |
Santana-Casiano, J. Magdalena |
title |
Winter mesoscale variations of carbonate system parameters and estimates of CO2 fluxes in the Gulf of Cadiz, northeast Atlantic Ocean (February 1998) |
title_short |
Winter mesoscale variations of carbonate system parameters and estimates of CO2 fluxes in the Gulf of Cadiz, northeast Atlantic Ocean (February 1998) |
title_full |
Winter mesoscale variations of carbonate system parameters and estimates of CO2 fluxes in the Gulf of Cadiz, northeast Atlantic Ocean (February 1998) |
title_fullStr |
Winter mesoscale variations of carbonate system parameters and estimates of CO2 fluxes in the Gulf of Cadiz, northeast Atlantic Ocean (February 1998) |
title_full_unstemmed |
Winter mesoscale variations of carbonate system parameters and estimates of CO2 fluxes in the Gulf of Cadiz, northeast Atlantic Ocean (February 1998) |
title_sort |
winter mesoscale variations of carbonate system parameters and estimates of co2 fluxes in the gulf of cadiz, northeast atlantic ocean (february 1998) |
publishDate |
2018 |
url |
http://hdl.handle.net/10553/1519 https://doi.org/10.1029/2001JC001243 |
genre |
North Atlantic Northeast Atlantic |
genre_facet |
North Atlantic Northeast Atlantic |
op_source |
Journal of Geophysical Research C: Oceans [ISSN 2169-9291], v. 108 (C11), 3344 |
op_relation |
Journal of geophysical research. Oceans 108 2169-9291 2068 WoS http://hdl.handle.net/10553/1519 doi:10.1029/2001JC001243 1542347105 000186509700001 350451 2199 C11 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2001JC001243 |
container_title |
Journal of Geophysical Research |
container_volume |
108 |
container_issue |
C11 |
_version_ |
1766130042593607680 |