Theoretical distributions (red line) of the total chl a and Dvchl a concentration (stochastic approach).

The profiles were obtained in stationary regime for a given set of noise intensities (case 2 of the stochastic model) as a function of depth, and are compared with the corresponding experimental distributions (green line) in sites L1129b (panel a) and L1105 (panel b). The theoretical values were obtained averaging over numerical realizations. The values of the parameters are those shown in Table 1. The noise intensities are: (a) , and for site L1129b; (b) , and for site L1105. (Color online).