Hydrographic and Calibrated Dissolved Oxygen Observations from the Canada and Makarov Basins, HLY2202 (2022)

This dataset provides calibrated, high-resolution dissolved oxygen measurements from CTD (conductivity, temperature, and depth) profiles collected during the 2022 HLY2202 expedition aboard the USCGC (United States Coast Guard Cutter) Healy across the Arctic Ocean. The product includes corrected dissolved oxygen concentrations, oxygen saturation, and apparent oxygen utilization (AOU), derived from Winkler-referenced calibration of CTD oxygen sensors. The dataset spans the Canada and Makarov Basin and captures the vertical structure of oxygen from surface to deep waters. These data are intended to support biogeochemical investigations of ventilation, water mass transformation, and remineralization processes that drive oxygen variability in the Arctic Basin. The calibrated oxygen fields enable direct comparison with historical hydrographic surveys, facilitating assessment of spatial gradients, vertical oxygen structure, and decadal-scale changes in dissolved oxygen. The dataset is distributed in NetCDF format to support reproducible analysis and long-term archival.

本数据集提供了2022年HLY2202科考航次期间，搭载于美国海岸警卫队希利号（USCGC，United States Coast Guard Cutter）的科考船在北冰洋开展的温盐深（CTD，Conductivity, Temperature, and Depth）剖面观测所获取的经校准高分辨率溶解氧测量数据。该数据集包含校正后的溶解氧浓度、氧饱和度以及表观氧利用量（AOU，Apparent Oxygen Utilization），其源自基于温克勒（Winkler）法校准的CTD溶解氧传感器。数据集覆盖加拿大海盆与马卡罗夫海盆，完整捕捉了从表层至深层水体的溶解氧垂直分布结构。此类数据旨在支撑针对驱动北冰洋海盆溶解氧变化的通风、水团变性及再矿化过程的生物地球化学研究。经校准的溶解氧场可直接与历史水文调查数据进行对比，有助于评估溶解氧的空间梯度、垂直分布结构以及十年尺度的变化趋势。本数据集以NetCDF格式分发，以支持可复现的分析与长期存档。