Fig. 2: Velocity, temperature, nitrate and mixing during two trans-Atlantic crossings.
From: Seasonal productivity of the equatorial Atlantic shaped by distinct wind-driven processes
a–f, Shown are zonal velocity (a,b), temperature (c,d) and nitrate (e,f) taken during R/V Meteor cruises M158 from 29 September to 22 October 2019 (a,c,e) and M181 from 30 April to 20 May 2022 (b,d,f). The mixed layer depth, \({D}_{\mathrm{ML}}\), is marked by thin solid lines, the EUC core depth, \({D}_{\mathrm{EUC}}\), by thick dashed lines and the depth of the 20 °C isotherm, \({D}_{20^\circ\mathrm{C}}\), as a proxy for the nitracline by thick solid lines. Also included in e and f are mean profiles of the turbulence dissipation rate, \(\varepsilon\) (grey-filled areas; vertical black lines mark 10−9 W kg−1; scale at the top of the panels). Profiles are derived by averaging all values below the mixed layer within intervals of 5° longitude. Black triangles at the top of c and d and e and f mark locations of CTD and microstructure stations, respectively.
