Water-column environmental variables and accompanying discrete CTD measurements collected offshore the U.S. Mid- and South Atlantic

Various water column variables, including salinity, dissolved inorganic nutrients, dissolved inorganic carbon, and radio-carbon isotopes were measured in samples collected using a Niskin-bottle rosette at selected depths from deepwater sites offshore the US Mid- and South Atlantic from September 2017 to April 2019. CTD (Conductivity Temperature Depth) data were also collected at each depth that a Niskin-bottle sample was collected and are presented along with the water sample data during the following five cruises: PC1704 (USGS field activity 2017-004-FA) in September 2017, ENG615 (USGS field activity 2018-024-FA) in June 2018, AT41 (USGS field activity 2018-042-FA) in August 2018, BMCC-2018 (USGS field activity 2019-620-FA) in October 2018, and RB1903 (USGS field activity 2018-053-FA) in April 2019.

2017年9月至2019年4月期间，研究团队于美国中大西洋及南大西洋近海深水站位的选定深度处，采用尼斯金采水瓶罗塞塔架（Niskin-bottle rosette）采集水样，对其中多项水柱环境参数开展测定，涵盖盐度（salinity）、溶解态无机营养盐（dissolved inorganic nutrients）、溶解态无机碳（dissolved inorganic carbon）以及放射性碳同位素（radio-carbon isotopes）。此外，在采集尼斯金水样的各对应深度，同步获取了电导-温度-深度剖面仪（Conductivity Temperature Depth，简称CTD）的剖面数据，并将上述数据与以下五次科考航次的水样数据一并公布：2017年9月的PC1704（USGS野外作业编号2017-004-FA）、2018年6月的ENG615（USGS野外作业编号2018-024-FA）、2018年8月的AT41（USGS野外作业编号2018-042-FA）、2018年10月的BMCC-2018（USGS野外作业编号2019-620-FA）以及2019年4月的RB1903（USGS野外作业编号2018-053-FA）。