Figure 7: Comparison of water-soluble organic carbon (WSOC) observations with model results. Observed WSOC (blue squares with standard deviation bars) and modelled WSOC-S1 (red line—squares) and WSOC when ageing of marine POA is taken into account (circles and green line) at (a) Amsterdam Island (37° S, 77° E) [41] and (b) Finokalia (35° N, 25° E) [42]. All values are in ng m-3.