Hydrography and currents in Storfjorden (Svalbard) from the STEP 2016-2017 moorings

as part of the step project (storfjorden polynya multidisciplinary study), two moorings, m1 and m2, were deployed in storfjorden (svalbard) on july 14, 2016 from the french r/v l’atalante and were recovered one year later, on september 28, 2017, from the french r/v pourquoi-pas?. the two moorings, deployed a few hundred meters apart at 78°n and 20°e at a depth of 100m, documented the formation of dense brine-enriched shelf water (bsw). the moorings included both physical oceanography (po) and biogeochemistry sensors. the present dataset is composed of po data only: the 3 components of the currents, backscatter, salinity, temperature and dissolved oxygen. po sensors on m1, spanning the whole water column, included 6 seabird sbe37 microcat (ctd), 15 rbr solo (t), and 1 rbr duet (td) for hydrography, while currents were monitored with a rdi wh 300khz upward looking adcp and 1 nortek aquadopp underneath. po sensors on the shorter m2 mooring included 1 seabird sbe63 (ctd-o2), 1 rbr solo (t) and 1 rbr duo (td).data have been calibrated and validated and the different steps of this processing are discussed in the technical report provided with the dataset. two netcdf4 files are provided for m1: one for hydrography (step2016_m1_hydrography.nc), the other one (step2016_m1_current.nc) for currents and backscatter. only one netcdf4 files (step2016_m2_hydrography.nc) is provided for the shorter m2. temperature and salinity data from sbe sensors have been interpolated on a common time grid with a 20’ time step. likewise temperature data from rbr are provided on a 30” time grid. a merged sbe-rbr dataset has also been built for increased vertical resolution, providing temperature every 20’. adcp data are provided on a 100’ time grid. the user is referred to the technical report provided with the dataset for further information on the different fields.

作为‘斯托尔弗约登多边形研究’阶段项目的一部分，两套浮标M1和M2于2016年7月14日由法国R/V L’Atalante在斯瓦尔巴的斯托尔弗约登海域部署，并在一年后的2017年9月28日由法国R/V Pourquoi-Pas?回收。这两套浮标相距数百米，分别位于北纬78°和东经20°，深度为100米，记录了密集的含盐度较高的 shelf water（BSW）的形成过程。浮标上配备了物理海洋学（PO）和生物地球化学传感器。本数据集仅包含PO数据：包括流速的三个分量、后向散射、盐度、温度和溶解氧。M1上的PO传感器，覆盖整个水柱，包括6套Seabird SBE37 Microcat（CTD）、15套RBR Solo（T）和1套RBR Duet（TD）用于水文学测量，同时使用RDI WH 300kHz向上看ADCP和1套Nortek Aquadopp进行流速监测。M2浮标上的PO传感器包括1套Seabird SBE63（CTD-O2）、1套RBR Solo（T）和1套RBR Duo（TD）。数据已经过校准和验证，数据处理的不同步骤在随数据集提供的技术报告中进行了讨论。为M1提供了两个NetCDF4文件：一个用于水文学（step2016_m1_hydrography.nc），另一个用于流速和后向散射（step2016_m1_current.nc）。对于较短的M2，仅提供了一个NetCDF4文件（step2016_m2_hydrography.nc）。来自SBE传感器的温度和盐度数据已根据20分钟的时间步长插值到公共时间网格上。同样，来自RBR的温度数据也提供了30秒的时间网格。为了提高垂直分辨率，还构建了一个SBE-RBR合并数据集，提供每20分钟的温度数据。ADCP数据提供在100分钟的时间网格上。用户应参考随数据集提供的技术报告以获取有关不同字段更详细的信息。