Figure S8. The annual average of shallow water
(Csw) versus deep water (Cdw) nitrate
concentrations from 500 Monte‐Carlo simulation cases. Each open circle
represents concentrations from one of the 500 runs. The two gray dashed
lines are the thresholds separating flushing (red, b> 0.1) and dilution (blue, b < 0.1)
patterns from chemostatic (gray, −0.1<= b <=
0.1) patterns. This figure shows that as long as Csw /
Cdw > 1.7, nitrate exhibits flushing
patterns (red); when Csw / Cdw< 0.8, nitrate export exhibits dilution patterns (blue).