Figure 6: Comparison of particulate Organic Carbon (OC) observations with model results. Observed OC (blue squares with standard deviation bars), modelled OC-S1 accounting for the oceanic sources of OA (red line—squares), and neglecting the marine OA sources (green line—triangles) at marine locations. (a) Amsterdam Island (37°S, 77°E; ) and (b) Finokalia (35°N, 25°E;  and ), (c) Azores (38°N, 27°W; from Pio et al. . All values are in ng m-3.