Extended Data Fig. 1: Temperature and macronutrient trends along the cruise transect.
From: Persistent equatorial Pacific iron limitation under ENSO forcing
a, Sea surface temperature (SST). b, Surface macronutrient concentrations. The phosphate scale in b is the nitrate/silicate scale multiplied by 1/16, the theoretical P:N requirement of phytoplankton. Note that in all cases the phosphate line lies above the nitrate line, therefore indicating conditions of excess phosphate relative to nitrate throughout this region.
