TERIFIC 2nd Ocean Glider Deployments in the Labrador Sea

as part of the terific (targeted experiment to reconcile increased freshwater with increased convection) project funded by the european research council, two g2 slocum gliders (398 and 409) from teledyne webb research were deployed offshore of qaqortoq, southwest of greenland, in december 2021 from the 30-m research vessel adolf jensen. both gliders were retrieved in late may 2022 onboard the rv celtic explorer southwest of the labrador sea. pumped slocum glider payload ctds (conductivity, temperature, and depth) provided by sea-bird electronics (bellevue, wa) were mounted on both slocum with a sampling frequency of 0.5 hz. an aanderaa oxygen optode was also fixed on both gliders, with the optode on glider 409 fitted in an outside bracket. both gliders were equipped with wetlabs (western environmental technologies laboratories) eco puck that measures chlorophyll and optical backscatter (532 and 700 nm) for 398 (bb2flslc) and chlorophyll, colored dissolved organic matter and optical backscatter (700 nm) for 409 (flbbcdslc). initial processing was done with the toolbox pyglider and both gliders were processed with the glidertools toolbox (gregor et al., 2019) to determine qc temperature and salinity variables. the vertical water velocity is estimated with the gliderflight toolbox using a steady-state flight model.

作为欧洲研究委员会资助的卓越项目（旨在调和淡水增加与对流增加的针对性实验，简称Terific）的一部分，于2021年12月，从30米长的研究船Adolf Jensen号出发，在格陵兰西南部外的海域部署了两艘G2型号的Slocum滑翔艇（编号398和409），隶属于Teledyne Webb Research公司。两艘滑翔艇于2022年5月下旬在拉布拉多海西南部的RV Celtic Explorer号上被回收。搭载由Sea-Bird Electronics（位于华盛顿州贝尔维尤）提供的泵送式Slocum滑翔艇温盐深（CTD）探测仪，采样频率为0.5赫兹，这些设备被安装在两艘滑翔艇上。此外，两艘滑翔艇上还固定了Aanderaa氧气光解器，其中滑翔艇409的光解器安装在外部支架中。两艘滑翔艇均装备了Wetlabs（西方环境技术实验室）的Eco Puck设备，用于测量398号（型号bb2flslc）的叶绿素和光学后向散射（532和700纳米），以及409号（型号flbbcdslc）的叶绿素、有色溶解有机物和光学后向散射（700纳米）。初步处理使用pyglider工具箱完成，而两艘滑翔艇的进一步处理则采用了glidertools工具箱（Gregor等人，2019年），以确定质量控制温度和盐度变量。垂直水流速度的估算则是通过使用滑翔艇飞行工具箱，并采用稳态飞行模型进行的。