RADPROF is a ship-based hydrographic monitoring section located in the northwest Iberia basin. The expedition sails from Cape Finisterre to 15.4o W, and, since 2014, includes a systematic sampling for inorganic carbon variables.
The north-western part of the Iberian Peninsula is located at the north-easternmost part of the subtropical gyre entering a shadow area in between main oceanic gyres. Being outside the main North Atlantic oceanic currents, the region is characterized by a weak upper ocean circulation with a mean southward flow of few cm per second, affected by an important mesoscale activity and slope dynamics. The area is also affected by seasonal upwelling specially in summer.
In 2003, the Spanish Institute of Oceanography (IEO) started an ambitious monitoring program of the full depth ocean hydrography in the Bay of Biscay and western Iberia (mid latitudes Eastern North Atlantic, ml-ENA), including several sections in the Bay of Biscay and ENA repeated on twice a year. The RADPROF cruise focuses on the Finisterre summertime section, and is conducted on regular basis once a year since 2012, thus allowing a comprehension of water masses seasonality and interannual variability in the region and explaining their relationship with regional and large-scale dynamics. RADPROF provides a contribution to the ICES status report on ocean climate, issued yearly.
Regarding biogeochemistry, the database for oxygen and inorganic nutrients gathered in the program is now mature enough to address the role that the ml-ENA plays in oxygen ventilation and nutrient dynamics. With regard to CO2 variables, they were analyzed in 2005, 2009 and 2010, and regularly from 2014 onwards. Although no transient tracers are measured, RADPROF is to be recognized as associated GO-SHIP line.
The Spanish Institute of Oceanography (IEO) is a public research organization belonging to the Spanish National Research Council (CSIC), devoted to marine science research, especially in relation to the scientific knowledge of the oceans, the sustainability of fishing resources and the marine environment. The IEO represents Spain in most of the international scientific and technological forums related to the sea and its resources. The fellow will be trained at IEO A Coruña in Galicia (Spain).