A decade of CO2 and ancillary data in the Nortwest Upwelling Iberian margin: open to coastal ocean differences

The Spanish Institute of Oceanography  (IEO-CSIC) is responsible for monitoring the Spanish coastal waters with ship-based oceanographic time series, the program called IEO Observing System (IEOOS). Although started in the 1990s, only mainly after 2014 CO2 measurements were included in some specific time series. Concretely, in this work we will present ten years of CO2 data in the Iberian upwelling region in the Nortwest of the Iberian penninsula. Here through the combined effort of two time series: (i) the yearly sampled open ocean RADPROF section at 42ºN from Cape Finisterre to the open ocean, and the (ii) coastal time series Radial A Coruña, located in the bay of A Coruña in the Artabro Gulf.  This IEO data set shows the relevance of different processes on the CO2 variables dynamics (upwelling/downwelling, benthic processes, river influence) over the acidification trend as a consequence of the global CO2 atmospheric increase. We will combine both open and coastal IEO time series  along with other open data available in the region to show case of the land to ocean gradient on the CO2 variables and driving processes in this highly dynamic area.