IOOS Glider - California Underwater Glider Network (CUGN) - CUGN Line 90 - sp030-20240216T1744

The overarching goal of the California Underwater Glider Network is to sustain baseline observations of climate variability off the coast of California. The technical approach is to deploy autonomous underwater gliders in a network to provide real-time data.The CUGN uses Spray underwater gliders making repeated dives from the surface to 500 m and back, repeating the cycle every 3 hours, and traveling 3 km in the horizontal during that time. The CUGN includes gliders on three of the traditional cross-shore CalCOFI lines: line 66.7 off Monterey Bay, line 80 off Point Conception, and line 90 off Dana Point. The glider missions typically last about 100 days, and cover over 2000 km, thus providing 4-6 sections on lines extending 300-500 km offshore. Since 2005 the CUGN has covered 200,000 km over ground in 28 glider-years, while doing 90,000 dives.cdm_data_type = TrajectoryProfileVARIABLES:chlorophyll_a (Chlorophyll-a concentration, kg.m-3)chlorophyll_a_qc (chlorophyll_a Quality Flag)conductivity (Sea Water Electrical Conductivity, S.m-1)conductivity_qc (conductivity Quality Flag)density (Sea Water Density, kg.m-3)density_qc (density Quality Flag)depth (m)depth_qc (depth Quality Flag)dissolved_oxygen (micromol.kg-1)dissolved_oxygen_qc (dissolved_oxygen Quality Flag)instrument_ctd (CTD Metadata, 1)instrument_doxyinstrument_fchllat_qc (latitude Quality Flag)lat_uv (Depth-averaged Latitude, degrees_north)lat_uv_qc (lat_uv Quality Flag)latitude (Profile Latitude, degrees_north)lon_qc (longitude Quality Flag)... (55 more variables)

加州水下滑翔机网络（California Underwater Glider Network，简称CUGN）的总体目标是维持加利福尼亚近海气候变率的基准观测。其技术方案为布设自主水下滑翔机组网，以获取实时观测数据。
CUGN采用Spray型水下滑翔机（Spray），该机型会反复在海面至500米水深之间往复下潜与上浮，每3小时完成一个完整循环，此期间水平航行距离可达3千米。
CUGN在三条传统跨岸加州合作海洋渔业调查（CalCOFI）测线上部署了滑翔机：分别为蒙特雷湾外的66.7号测线、康塞普西翁角外的80号测线，以及达纳角外的90号测线。
单台滑翔机的任务续航周期通常约为100天，累计航行距离超过2000千米，因此可在向海延伸300~500千米的测线上完成4~6个观测断面。自2005年以来，CUGN在28个滑翔机作业年度中累计地面航行里程达20万千米，累计完成9万次下潜任务。
cdm_data_type = 轨迹剖面（TrajectoryProfile）
变量列表如下：
chlorophyll_a：叶绿素a浓度，单位：kg·m⁻³
chlorophyll_a_qc：chlorophyll_a质量控制标志
conductivity：海水电导率，单位：S·m⁻¹
conductivity_qc：conductivity质量控制标志
density：海水密度，单位：kg·m⁻³
density_qc：density质量控制标志
depth：水深，单位：m
depth_qc：depth质量控制标志
dissolved_oxygen：溶解氧，单位：μmol·kg⁻¹
dissolved_oxygen_qc：dissolved_oxygen质量控制标志
instrument_ctd：CTD元数据，取值为1
instrument_doxy
instrument_fchllat_qc：纬度质量控制标志
lat_uv：深度平均纬度，单位为北纬度数
lat_uv_qc：lat_uv质量控制标志
latitude：剖面纬度，单位为北纬度数
lon_qc：longitude质量控制标志
……（剩余56个变量）