2024-03-28T19:55:33Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/563832020-05-25T12:46:11Zcom_10261_47com_10261_8col_10261_300
00925njm 22002777a 4500
dc
Gago, Jesús
author
Gilcoto, Miguel
author
Pérez, Fiz F.
author
Ríos, Aida F.
author
2003
Coastal upwelling systems are regions with highly variable physical processes and very high rates of primary production and
very little is known about the effect of these factors on the short-term variations of CO2 fugacity in seawater ( fCO2 w ). This paper
presents the effect of short-term variability ( < 1 week) of upwelling–downwelling events on CO2 fugacity in seawater ( fCO2 w ),
oxygen, temperature and salinity fields in the Rı´a de Vigo (a coastal upwelling ecosystem). The magnitude of fCO2 w values is
physically and biologically modulated and ranges from 285 Aatm in July to 615 Aatm in October. There is a sharp gradient in
fCO2 w between the inner and the outer zone of the Rı´a during almost all the sampling dates, with a landward increase in fCO2 w .
CO2 fluxes calculated from local wind speed and air–sea fCO2 differences indicate that the inner zone is a sink for
atmospheric CO2 in December only ( 0.30 mmol m 2 day 1). The middle zone absorbs CO2 in December and July ( 0.05
and 0.27 mmol m 2 day 1, respectively). The oceanic zone only emits CO2 in October (0.36 mmol m 2 day 1) and
absorbs at the highest rate in December ( 1.53 mmol m 2 day 1).
Marine Chemistry 80(4): 247-264 (2003)
0304-4203
http://hdl.handle.net/10261/56383
10.1016/S0304-4203(02)00117-2
NW Iberian Peninsula
Upwelling
Surface seawater
fCO2
Air – sea exchange of CO2
Short-term variability of fCO2 in seawater and air-sea CO2 fluxes in a coastal upwelling system (Ría de Vigo, NW Spain)