El pasado día 5 de Septiembre, la estudiante de Máster Interuniversitario en Oceanografía, en la Facultad de Ciencias del Mar de la Universidad de Las Palmas de Gran Canaria, defendió su Trabajo Final de Máster titulado: Transports and budgets of anthropogenic CO2 in the Eastern North Atlantic Subtropical Gyre during 2009.
Este trabajo fue realizado en el grupo de investigación QUIMA del Instituto de Oceanografía y Cambio Global, dirigido por los catedráticos Melchor González-Dávila y J. Magdalena Santana-Casiano.
El resumen del trabajo se presenta a continuación:
During ORCA 1009 project in the eastern boundary of the
North Atlantic subtropical gyre, pH, total alkalinity and total inorganic
carbon were measured along the three section in the area between 29-37oN
and 9-24oW. The anthropogenic carbon content, Cant, was computed
applying the back-calculation techniques TrOCA 2007 and 𝜑𝐶0T methods.
Slightly higher concentrations of Cant in surface and intermediate waters was
obtained by the TrOCA 2007. In contrast, lower concentrations were estimated in
depth waters. The differences between the methods are mainly related to the
different parameterizations of the pre-industrial and preformed properties and
from the disequilibrium parameterizations. The large inflow of Cant to the
region is through the western section (712 kmol-1) caused by the
Azores Current. The Azores Current mostly feed the Canary Current at surface
waters, the reasons behind the relatively high output of Cant estimated for
this current (-440 kmol-1). In the northern transect, we observed a
southward flow of -50 kmol s-1 influenced by the Portugal Current
and finally, the MOW (in the eastern section) as goes out of the Mediterranean,
deeps at intermediate waters, and intensifies the Azores Countercurrent
(eastward) by –70 kmol s-1.