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Factors controlling pCO2 variability in the eastern Gulf of Cádiz (SW Iberian Península).
- Source :
- Ocean Science Discussions; 2019, p1-39, 39p
- Publication Year :
- 2019
-
Abstract
- Spatiotemporal variations of the partial pressure of CO<subscript>2</subscript> (pCO<subscript>2</subscript>) were studied during 8 oceanographic cruises conducted between March 2014 and February 2016 in surface waters of the eastern shelf of the Gulf of Cádiz (SW Iberian Península) between the Guadalquivir River and Cape Trafalgar. pCO<subscript>2</subscript> presented a range of variation between 320.6 and 513.6 µatm, with highest values during summer and autumn and lowest during spring and winter, showing a linear dependence between pCO<subscript>2</subscript> and temperature. The distributions of pCO<subscript>2</subscript> were not homogeneous. Spatially, there was a general decrease from coastal to off-shore stations associated with continental inputs and presented an increase in the zones deeper than 400 m due to the influence of the eastward branch of the Azores Current. On the other side, the study area acted as source of CO<subscript>2</subscript> to the atmosphere during summer and autumn and as a sink in spring and winter, with a mean value for the study period of −0.18 ± 1.32 mmol m<superscript>−2</superscript> d<superscript>−1</superscript>. In the Guadalquivir and Sancti Petri sections, the CO<subscript>2</subscript> fluxes decreased towards offshore, whereas in the Trafalgar section increased due to the presence of an upwelling. These results highlighted the Gulf of Cádiz as a CO<subscript>2</subscript> sink, with a capture capacity of 14.9 Gg year<superscript>−1</superscript>. [ABSTRACT FROM AUTHOR]
- Subjects :
- BAYS
PARTIAL pressure
WATER
AUTUMN
ATMOSPHERE
Subjects
Details
- Language :
- English
- ISSN :
- 18120806
- Database :
- Complementary Index
- Journal :
- Ocean Science Discussions
- Publication Type :
- Academic Journal
- Accession number :
- 135640042
- Full Text :
- https://doi.org/10.5194/os-2019-6