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Short-term variations of the partial pressure of CO2 in surface waters of the Galician upwelling system

Name: Short-term variations of the partial pressure of CO2 in surface waters of the Galician upwelling system
Keywords: Sciences aquatiques & océanologie, Sciences du vivant, Aquatic sciences & oceanology, Life sciences

appsOther research productkeyboard_double_arrow_right Other ORP type 01 Jan 2001 Belgium English

Authors: Borges, Alberto; Frankignoulle, Michel;

handle: 2268/2579

Short-term variations of the partial pressure of CO2 in surface waters of the Galician upwelling system

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Abstract

The partial pressure of CO2 (pCO2) and dissolved oxygen saturation level (%O2) were monitored continuously during a cruise in August 1998, which sampled surface waters off the Galician coast. Data are presented from two Lagrangian experiments carried out in an upwelling on the continental shelf and in the core of an offshore filament. The data show that daily variations in surface pCO2 and oxygen (%O2) were controlled by the diurnal cycle of primary production/respiration, temperature variations and air–sea exchange. Data obtained during various cross-shelf and cross-filament transects are also discussed and give an insight into the processes controlling large scale variations of pCO2 and %O2 in the Galician upwelling system. These data suggest that upwelling filaments are an important feature of the inorganic carbon cycle of upwelling systems. However more field data in the various eastern boundary current systems worldwide are needed.

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Belgium

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Keywords

Sciences aquatiques & océanologie, Sciences du vivant, Aquatic sciences & oceanology, Life sciences

69 references, page 1 of 7

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A´ lvarez-Salgado, X. A., Doval, M.D., Borges, A. V., Joint, I., Frankignoulle, M., Woodward, E. M. S., & Figueiras, F. G. (2001). Off-shelf fluxes of labile materials by an upwelling filament in the NW Iberian upwelling system. Progress in Oceanography, 51 (2-4), 321-337.

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Bakker, D. C. E., de Baar, H. J. W., & de Jong, E. (1999). The dependence on temperature and salinity of dissolved inorganic carbon in the East Atlantic surface waters. Marine Chemistry, 65, 263-280. [OpenAIRE]

Barbosa, A. B., Galva˜o, H. M., Mendes, P. A., A´ lvarez-Salgado, X. A, Figueiras, F. G., & Joint, I. (2001). Short term variability of heterotrophic bacterioplankton during upwelling off the NW Iberian margin. Progress in Oceanography, 51 (2-4), 339-359.

Barton, E. D., Inall, M., Sherwin, T. J., & Torres, R. (2001). Vertical structure, turbulent mixing and fluxes during Lagrangian observations of an upwelling filament system off Northwest Iberia. Progress in Oceanography, 51 (2-4), 249-267.

Bates, N. R., Takahashi, T., Chipman, D. W., & Knap, A. H. (1998). Variability of pCO2 on diel to seasonal timescales in the Sargasso Sea near Bermuda. Journal of Geophysical Research, 103(C8), 15567-15585.

Benson, B. B., & Krause, D. (1984). The concentration and isotopic fractionation of oxygen dissolved in freshwater and seawater in equilibrium with the atmosphere. Limnology and Oceanography, 29, 620-632.

Biscaye, P. E., Flagg, C. N., & Falkowski, P. G. (1994). The Shelf Edge Exchange Processes experiment, SEEP-II: an introduction to hypotheses, results and conclusions. Deep-Sea Research II, 41, 231-252.

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	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Average
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average

	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	0
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Average
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Average
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Average

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