Relation between Upwelling Intensity and the Variability of Physical and Chemical Parameters in the Southern Benguela Upwelling System

Figure 2

Inshore-offshore near-surface (a and c) and 20 m depth (b and d) variability over time for temperature (a and b) and salinity (c and d). The thick black line represents the upwelling index (UI). Temperature (°C) and salinity (PSU) values are indicated as labels on respective isobars. The temperature ranged between <11°C (dark blue) and >18°C (red). Salinity ranged between <34.7 PSU (dark blue) and >35.4 (red).

(a) Temperature (°C) near surface

(b) Temperature (°C) at 20 m depth

(c) Salinity (PSU) near surface

(d) Salinity (PSU) at 20 m depth