ICY-LAB DY081 Autonomous ocean glider data off Southwest Greenland@en

Two Slocum gliders (units 331 and 439) were deployed during RRS Discovery expedition DY081 on July 17th 2017 at 62.9°N, 52.6°W, approximately 40 km off the Greenland shelf break, travelled North along the coast in a zig-zag pattern between the shelf and deep waters, and were recovered 8 days later from 63.7°N, 53.1°W and 62.9° N, 52.7°W respectively on July 24th 2017. Gliders profiled from the surface to 1000 m, except during the two excursions onto the shelf, once south and once north of the Godthåb Trough, where they followed the bathymetry. Each glider was fitted with a pumped CTD and bio-optical sensors (WET Labs puck). These bio-optical sensors measure optical backscattering (in the form of volume scattering function), chlorophyll fluorescence, and UV fluorescence for fluorescing dissolved organic matter (FDOM), a subset of coloured organic matter (CDOM). This dataset contains raw and processed/gridded data files from the glider deployments. The raw data are contained as .dbd and .ebd files in ***_raw_data.zip folders for each of glider unit 331 and 439. The data were processed using the SOCIB glider toolbox (https://github.com/socib/glider_toolbox) and saved as a NetCDF (processed_***.nc) with the following variables: longitude, latitude, time (Julian Day), pressure, eastward velocity, northward velocity, temperature (not thermally corrected), salinity (not thermally corrected), chlorophyll fluorescence (not corrected for quenching), coloured organic matter (cdom), backscatter (volume scattering function) and oxygen concentration. The expedition report is provided and metadata can be found in the processed/gridded data files.两台斯洛克姆水下滑翔机（Slocum glider，编号331与439）于2017年7月17日在RRS Discovery远征航次DY081期间，在北纬62.9°、西经52.6°（格陵兰陆坡坡折带外约40公里处）完成布放。两台滑翔机沿海岸向北航行，在陆架与深水区之间以锯齿状轨迹行进，并于布放8天后的2017年7月24日，分别在北纬63.7°、西经53.1°与北纬62.9°、西经52.7°处被回收。 滑翔机通常在海面至1000米水深范围内开展剖面观测，仅在两次偏离主航线进入陆架区域时例外：一次位于戈特霍布海槽（Godthåb Trough）南侧，另一次位于其北侧，此时滑翔机沿海底地形航行。 每台滑翔机均搭载了泵吸式温盐深仪（CTD）与生物光学传感器（WET Labs PUCK）。该生物光学传感器可测量光学后向散射（以体积散射函数的形式表征）、叶绿素荧光，以及用于检测荧光性溶解有机质（FDOM，有色有机质（CDOM）的一个子类）的紫外荧光。 本数据集包含本次滑翔机布放任务产生的原始数据与经过处理/网格化处理的数据文件。编号331与439的滑翔机的原始数据均以.dbd和.ebd格式文件存储于各自的***_raw_data.zip压缩包中。 数据使用SOCIB滑翔机工具箱（https://github.com/socib/glider_toolbox）进行处理，并保存为NetCDF格式文件（processed_***.nc），其中包含以下变量：经度、纬度、时间（儒略日）、压强、东向流速、北向流速、温度（未进行热校正）、盐度（未进行热校正）、叶绿素荧光（未进行淬灭校正）、有色有机质（CDOM）、后向散射（体积散射函数）与氧浓度。 本数据集附带本次远征航次报告，元数据可在处理后的/网格化数据文件中获取。