Mean current velocity sections along 11°S, 5°S, 35°W, and 23°W from shipboard measurements used in "Transports and pathways of the tropical AMOC return flow from Argo data and shipboard velocity measurements"

This data set contains current velocity measurements used in the study "Transports and pathways of the tropical AMOC return flow from Argo data and shipboard velocity measurements“ by Tuchen et al. (2022) published at Journal of Geophysical Research: Oceans.

For the meridional mean sections along 35°W and 23°W, and for the quasi-zonal sections along 11°S and 5°S, one ".mat" file is provided for each of the sections. Please note that the section along 11°S consists of a zonal part (east of 34.2°W) and a cross-shore part closer to the coast. The meridional velocities along the cross-shore part of the 11°S-section are rotated clockwise by 36° in order to derive along-shore velocities.

• 11°S: meridional velocity / alongshore velocity (V), neutral density (gamma_n), longitude (LON), depth (Z)
• 5°S: meridional velocity (V), neutral density (gamma_n), longitude (LON), depth (Z)
• 35°W: zonal velocity (U), neutral density (gamma_n), latitude (LAT), depth (Z)
• 23°W: zonal velocity (U), neutral density (gamma_n), latitude (LAT), depth (Z)

Mean velocity data in the upper 10 m are replaced by the gridded mean surface current velocities at 1/4° horizontal resolution derived from satellite-tracked surface drifting buoys (Laurindo et al. 2017) that were horizontally interpolated to the resolution of the individual ship sections.