Discrete measurements of pH, dissolved inorganic nutrients (nitrate, phosphate and silicate) and hydrographic variables (salinity, temperature, dissolved oxygen) obtained during the cruise RREX 2015

he reykjanes ridge is a major topographic feature of the north-atlantic ocean. it lies in a central position along the main paths followed by the upper and lower limbs of the meridional overturning cell (moc), which contributes at moderating the european climate in creating a transport of heat toward the north atlantic. our hypothesis is that the reykjanes ridge influences the main components of the upper and lower limbs of the moc because it is a strong constraint on the horizontal and vertical circulation, it impacts the water mass distribution and evolution and it is a region of intense turbulent mixing. the objective of the rrex project is to conduct a process study in order to better understand the role of the reykjanes ridge on the dynamics and water mass transformation in the subpolar gyre and ultimately on the moc. this project relied on two hydrographic cruises carried out in 2015 and 2017 to acquire the adequate dataset to (1) provide a synoptic high-resolution and full depth survey to monitor the flow along and across the ridge, (2) to quantify the variability of the vertical and horizontal structure of the currents parallel to the ridge at daily to seasonal time-scales and (3) to provide sufficient turbulence observations to monitor the heterogeneous and intermittent mixing processes. this dataset gathers discrete measurements of ph, dissolved inorganic nutrients (nitrate, phosphate and silicate) and hydrographic variables (salinity, temperature, dissolved oxygen) obtained during the cruise rrex 2015 (reykjanes ridge experiment) carried out in the north atlantic ocean from 5 june to 10 july 2015 aboard r/v thalassa

雷克雅内斯脊是北大西洋海域的重要地形特征，位于中纬度翻转环流（MOC）上下分支的主要路径中心位置，对调节欧洲气候以及向北大西洋输送热量具有重要作用。本研究的假设是，雷克雅内斯脊通过对其水平与垂直循环的强烈制约，对中纬度翻转环流上下分支的主要组成部分产生影响。该影响体现在对水团分布与演化的影响，以及作为强湍流混合区域的特性。RREX项目旨在通过过程研究，深入了解雷克雅内斯脊对次极地环流动力学和水团转化的作用，并最终对中纬度翻转环流的影响。该项目依赖于2015年和2017年进行的两次海洋水文考察，以获取必要的 dataset，具体包括：（1）提供对脊线及其两侧的高分辨率、全深度综合调查，以监测沿脊和跨脊的流动；（2）量化脊线平行方向上电流的垂直和水平结构的日到季节尺度变化；（3）提供足够的湍流观测数据，以监测异质和间歇性混合过程。本 dataset 收集了在2015年6月5日至7月10日于北大西洋海域进行的雷克雅内斯脊实验（RREX 2015）期间，搭载 R/V Thalassa 船获得的离散测量数据，包括 pH 值、溶解无机营养素（硝酸盐、磷酸盐和硅酸盐）以及水文变量（盐度、温度、溶解氧）。