Bottle-calibrated dissolved oxygen (DO) profiles from US Overturning in the Subpolar North Atlantic Program (OSNAP) cruises in 2020 and 2022 (AR45 and AR69-03)

This dataset contains bottle-calibrated dissolved oxygen (DO) profiles collected from Conductivity Temperature Depth (CTD) casts during cruises in 2020 (AR45) and 2022 (AR69-03) to recover and redeploy Overturning in the Subpolar North Atlantic Program (OSNAP) moorings in the Labrador Sea and western Irminger Sea. DO profiles were used in conjunction with oxygen bottle measurements (Winklers) to produce a post-cruise oxygen-calibrated CTD product for scientific use as part of Gases in the Overturning and Horizontal circulation of the Subpolar North Atlantic Program (GOHSNAP), which has added moored oxygen sensors to the OSNAP mooring array, beginning in 2020. This documentation contains overviews of CTD data collection and processing and of the oxygen sensor calibration method. For each cruise, we provide a summary of relevant cruise events, oxygen sensor calibration results, and issues/problems associated with oxygen data collected.

本数据集包含2020年（AR45）与2022年（AR69-03）两次科考航次中，为回收并重新部署亚极地北大西洋翻转流计划（Overturning in the Subpolar North Atlantic Program, OSNAP）在拉布拉多海与西伊尔明厄海布设的锚系潜标所获取的经瓶式校准的溶解氧（Dissolved Oxygen, DO）剖面，该剖面通过温盐深仪（Conductivity Temperature Depth, CTD）走航观测获得。本数据集的溶解氧剖面与温克勒法溶解氧瓶测结果相结合，用于生成航后经氧校准的温盐深仪数据产品，以供科学研究使用。该产品隶属于亚极地北大西洋翻转与环流气体计划（Gases in the Overturning and Horizontal circulation of the Subpolar North Atlantic Program, GOHSNAP），该计划自2020年起为OSNAP锚系阵列新增了锚系溶解氧传感器。本说明文档涵盖了温盐深仪数据采集与处理流程，以及溶解氧传感器校准方法的概述。针对每个航次，文档还提供了相关航次事件汇总、溶解氧传感器校准结果，以及采集的溶解氧数据相关问题与异常情况。