Northern and southern water masses in the equatorial Atlantic (original) (raw)

In the framework of the WOCE Hydrographic Program, two trans-Atlantic CTDO/tracer sections with closely-spaced stations, along 7'30" and 4'30's (WHP Lines A6 and A7), and two meridional sections, along 3"50W and 35"W joining the two zonal sections, were occupied in January-March 1993 (CITHER 1 cruise on board the N I 0 L'ATALANTE). CTD profiles and nutrient (silicate, phosphate and nitrate) data at 32 depths between surface and bottom were obtained at each station. The distributions on vertical sections, and on isopycnal surfaces, of these three chemical tracers are presented and discussed in the context of large-scale circulation in the equatorial Atlantic Ocean.