Water temperature, salinity, and others taken by CTD and Niskin bottles from the research vessel Neil Armstrong in the North Atlantic Ocean during 2020 Ocean Observations Initiative (OOI) Irminger Sea 7 and Overturning in the Subpolar North Atlantic Program – Greenland Deep Western Boundary Current, ONSAP-GDWBC, cruise AR46, from 2020-08-08 to 2020-08-26 (NCEI Accession 0252117)

This dataset contains salinity-calibrated Conductivity Temperature Depth (CTD) data from the 2020 Ocean Observations Initiative (OOI) Irminger Sea 7 and Overturning in the Subpolar North Atlantic Program – Greenland Deep Western Boundary Current (ONSAP GDWBC) cruise (AR46). Data quality control methods have been used to assess performance of the CTD instrument. Resulting high-quality profiles were then used together with salinity bottle data analyzed at sea to create a post-cruise salinity-calibrated CTD product.

This dataset has been produced as part of an ongoing effort to more fully utilize CTD data collected by OOI Irminger cruises, which have been taking place annually since 2014. The hydrographic data collection facilitated by OOI in the Irminger Sea currently supports science for not only OOI end users, but also international oceanographic research projects, including the Overturning in the Subpolar North Atlantic Program (https://www.o-snap.org/), Atlantic Meridional Overturning Circulation Program (https://usclivar.org/amoc) and BioGeoChemical Array for Real-time Geostrophic Oceanography program (https://biogeochemical-argo.org/index.php). Such programs require a higher-level data product than what OOI provides through its standard data dissemination, and hence a quality controlled, salinity-calibrated data product has been produced. Data are in text formats.

本数据集包含来自2020年海洋观测倡议（Ocean Observations Initiative, OOI）伊尔明格海7号航次以及亚极地北大西洋翻转环流项目——格陵兰深海西边界流（Overturning in the Subpolar North Atlantic Program – Greenland Deep Western Boundary Current, ONSAP GDWBC）航次（AR46）的经盐度校准的电导率-温度-深度（Conductivity Temperature Depth, CTD）数据。研究人员已通过数据质量控制方法评估CTD仪器的性能，随后将所得的高质量剖面数据与海上分析的盐度瓶测数据相结合，生成了航次后盐度校准CTD数据产品。

本数据集是为更充分利用OOI伊尔明格海航次所采集的CTD数据而开展的持续性工作的一部分，该类航次自2014年起每年开展一次。目前OOI在伊尔明格海开展的水文数据采集工作，不仅可为OOI终端用户提供科研支撑，也能服务于多项国际海洋学研究项目，包括亚极地北大西洋翻转环流项目（https://www.o-snap.org/）、大西洋经向翻转环流项目（Atlantic Meridional Overturning Circulation Program，https://usclivar.org/amoc）以及实时地转海洋学生物地球化学阵列项目（BioGeoChemical Array for Real-time Geostrophic Oceanography program，https://biogeochemical-argo.org/index.php）。此类项目所需的数据产品层级高于OOI通过标准数据发布渠道提供的内容，因此本团队开发了经过质量控制且经盐度校准的数据产品。数据集采用文本格式存储。