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 <em>Tuchen et al. (2022)</em> published at <em>Journal of Geophysical Research: Oceans</em>. 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 (<em>Laurindo et al. 2017</em>) that were horizontally interpolated to the resolution of the individual ship sections.本数据集包含用于Tuchen等人（2022）发表于《Journal of Geophysical Research: Oceans》（《地球物理研究杂志：海洋》）的研究《基于Argo浮标资料与船载流速观测的热带大西洋经向翻转环流（Atlantic Meridional Overturning Circulation，AMOC）回流输运与路径》中的流速观测数据。针对沿35°W与23°W的经向平均断面，以及沿11°S和5°S的准纬向断面，每个断面均对应提供一个.mat格式文件。 请注意，11°S断面包含纬向部分（34.2°W以东区域）与更靠近海岸的跨岸部分。11°S断面跨岸部分的经向流速已顺时针旋转36°，以推导得到沿岸流速。各断面的变量信息如下： 11°S断面：经向流速/沿岸流速（V）、中性密度（gamma_n）、经度（LON）、深度（Z）； 5°S断面：经向流速（V）、中性密度（gamma_n）、经度（LON）、深度（Z）； 35°W断面：纬向流速（U）、中性密度（gamma_n）、纬度（LAT）、深度（Z）； 23°W断面：纬向流速（U）、中性密度（gamma_n）、纬度（LAT）、深度（Z）。 上层10米的平均流速数据已被替换为基于卫星跟踪表层漂流浮标（Laurindo等人，2017）得到的1/4°水平分辨率网格化平均表层流流速，并经水平插值匹配至各船测断面的分辨率。