Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
doi:10.5194/bg-2017-83
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
29 Mar 2017
Review status
This discussion paper is under review for the journal Biogeosciences (BG).
Changes in the partial pressure of carbon dioxide in the Mauritanian-Cape Verde upwelling region between 2005 and 2012
Melchor González-Dávila1, J. Magdalena Santana Casiano1, and Francisco Machín1,2 1Instituto de Oceanografía y Cambio Global, Grupo QUIMA, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain
2Departamento de Física, Universidad de Las Palmas de Gran Canaria, 35017, Las Palmas de Gran Canaria, Spain
Abstract. Coastal upwelling along the eastern margins of major ocean basins represent regions of large economic importance due to the high biological productivity. However, the physical forcing of upwelling processes that favor the production in these areas are being affected by global warming, which will modify the intensity of the upwelling and, consequently, the carbon dioxide cycle. For this reason, the role of observations in addressing any climate change impacts on the global carbon cycle in areas of upwelling is of great importance. Monthly high resolution surface experimental data for temperature and partial pressure of carbon dioxide in the Mauritanian-Cape Verde upwelling region from 2005 to 2012 are shown. This data set provides direct evidence of seasonal and interannual changes in the physical and biochemical processes. They confirmed an upwelling intensification and an increase in the CO2 outgassing of 1 Tg a year in one of the four most important upwelling regions of the planet due to wind increase, even when primary production seems to also be reinforced. This increase in CO2 intake together with the observed decrease in sea surface temperature at the location of the Mauritanian Cape Blanc, 21º N, produced a pH decrease of −0.003 ± 0.001 per year.

Citation: González-Dávila, M., Santana Casiano, J. M., and Machín, F.: Changes in the partial pressure of carbon dioxide in the Mauritanian-Cape Verde upwelling region between 2005 and 2012, Biogeosciences Discuss., doi:10.5194/bg-2017-83, in review, 2017.
Melchor González-Dávila et al.
Melchor González-Dávila et al.
Melchor González-Dávila et al.

Viewed

Total article views: 206 (including HTML, PDF, and XML)

HTML PDF XML Total Supplement BibTeX EndNote
157 38 11 206 74 1 9

Views and downloads (calculated since 29 Mar 2017)

Cumulative views and downloads (calculated since 29 Mar 2017)

Viewed (geographical distribution)

Total article views: 206 (including HTML, PDF, and XML)

Thereof 206 with geography defined and 0 with unknown origin.

Country # Views %
  • 1

Saved

Discussed

Latest update: 24 Apr 2017
Publications Copernicus
Download
Short summary
The Mauritanian-Cape Verde upwelling is shown to be sensitive to climate change forcing on upwelling processes, which strongly affects the CO2 surface distribution, ocean acidification rates and air-sea CO2 exchange. They confirmed an upwelling intensification, an increase in the CO2 outgassing and an important decrease in the pH of the surface waters. Upwelling areas are poorly studied and VOS lines are shown as one of the most significative contributors to the knowledge of the ocean response.
The Mauritanian-Cape Verde upwelling is shown to be sensitive to climate change forcing on...
Share