Fig 1.
The Mediterranean basin and its chlorophyll concentration pattern.
(A) Geographic regions that are discussed throughout the text. (B) Chl concentration climatology over the Mediterranean Sea relative to 1998–2009 time period. Highest Chl concentrations are generally found in coastal water, in proximity of the river outflow, and are obviously conditioned by the nutrient of natural origin carried by rivers.
Fig 2.
Chlorophyll concentration trend.
(A) Chl concentration trend over the Mediterranean Sea, relative to 1998–2009 time period. Color bar scale represents the relative changes (i.e., percentage) corresponding to the dimensional trend [mg m-3 y-1] with respect to the climatological Chl concentration values. (B) Significance of the trend as obtained from Eq 14.
Fig 3.
Chl trend in the North Adriatic Sea.
(A) Trend map, expressed as percentage of variation with respect to the climatological field, over the North Adriatic Sea and (B) time series, over the same area, for the original Chl signal (thin line), seasonal component (dashed line), irregular component (grey line) and inter-annual component (thick line) derived from X-11 decomposition.
Fig 4.
Chl trend off the Nile River delta.
(A) Trend map, expressed as percentage of variation with respect to the climatological field, over the Delta Nile area and (B) time series, over the same area, for the original Chl signal (thin line), seasonal component (dashed line), irregular component (grey line) and inter-annual component (thick line) derived from X-11 decomposition.