Dissolved inorganic carbon dynamics and CO 2 atmospheric exchanges in the inner and outer Scheldt estuary

Since 1992, the Chemical Oceanography Unit of the University of Liège has carried out on a regular basis field cruises in the Scheldt inner estuary and the river plume (outer estuary), during which were measured: pH, total alkalinity, dissolved inorganic carbon, partial pressure of CO 2 (pCO 2 ), dissolved oxygen and atmospheric flux of CO 2 . In the inner Scheldt estuary, pCO 2 values in the upper estuary can be as high as 9000 ppm that is about 25 times the value of atmospheric equilibrium (presently around 370 ppm). These high pCO 2 values induce a high CO 2 efflux and the entire Scheldt ca... Mehr ...