Other key parameterizations include a free surface height that changes in response to evaporation, precipitation, and convergence of ocean currents, absorption of sunlight tied to observed chlorophyll concentrations, a representation of the oceanic mixed layer, inclusion of turbulence generated by tidal mixing on shelves and schemes allowing water from marginal seas such as the Red and Baltic Seas to " mix " across narrow straits at their mouths.
42.
However, the global sink of CO 2 in marginal seas could be almost fully compensated by the emission of CO 2 ( + 11.1 mol C m " 2 y " 1; + 0.40 Gt C y " 1 ) from the ensemble of near-shore coastal ecosystems, mostly related to the emission of CO 2 from estuaries ( 0.34 Gt C y " 1 ).
