IOOS Glider - GL_MIDATL20 - ng666-20200722T1657

Deployment of a Littoral Battlespace Sensing (LBS) glider owned and operated by the Naval Oceanographic Office (NAVOCEANO). LBS gliders collect temperature and salinity profiles in the water column. These gliders were provided and operated by the Naval Oceanographic Office (NAVOCEANO) and are part of a larger effort to deploy and operate over 100 gliders simultaneously. Data collected by these Littoral Battlespace Sensing (LBS) gliders is assimilated for use in underwater ocean forecasts that support a wide range of naval operations. The glider was deployed in the Hudson Shelf Valley and will transect southeast towards Hudson Canyon and Mid-Atlantic shelfbreak, then southwest along the shelf break toward Lindenkohl Canyon and finally northwest back to the deployment location.  This real-time dataset includes CTD profiles.cdm_data_type = TrajectoryProfileVARIABLES:c_fin (Commanded Fin Position, %)cond_orig (Conductivity, S.m-1)conductivity (Sea Water Electrical Conductivity, S.m-1)crs (http://www.opengis.net/def/crs/EPSG/0/4326)density (Sea Water Density, kg.m-3)depth (m)dr_latitude (Dead-Reckoned Latitude, %)dr_longitude (Dead-Reckoned Latitude, %)dtime (Time, seconds since 1970-01-01T00:00:00Z)eng_head (radians)eng_pitchAng (radians)eng_rollAng (radians)instrument_ctd (CTD Metadata, 1)lat_uv (Depth-averaged Latitude, degrees_north)latitude (Profile Latitude, degrees_north)lon_uv (Depth-averaged Longitude, degrees_east)longitude (Profile Longitude, degrees_east)m_battery (Battery Voltage, V)m_battpos (Battery Position, inch)... (60 more variables)

本数据集为美国海军海洋局（Naval Oceanographic Office, NAVOCEANO）所属并运营的近岸战场感知（Littoral Battlespace Sensing, LBS）滑翔机部署任务数据。LBS滑翔机可采集水柱内的温度与盐度剖面数据。此类滑翔机由海军海洋局提供并操作，属于同步部署并运行超100架滑翔机的整体项目的组成部分。该类滑翔机采集的数据将被同化，用于支撑各类海军作战行动的水下海洋预报。
本次部署的滑翔机布设点位为哈德逊陆架谷（Hudson Shelf Valley），其航行轨迹为：先向东南方向横穿至哈德逊峡谷（Hudson Canyon）与大西洋中陆架坡折带，随后沿陆架坡折带向西南方向航行至林登科尔峡谷（Lindenkohl Canyon），最终向西北方向返回至初始部署位置。
本实时数据集包含CTD剖面数据，其数据类型定义为：cdm_data_type = TrajectoryProfile
变量详情如下：
c_fin（指令鳍位置，单位：%）、cond_orig（原始电导率，单位：S·m⁻¹）、conductivity（海水电导率，单位：S·m⁻¹）、crs（坐标参考系：http://www.opengis.net/def/crs/EPSG/0/4326）、density（海水密度，单位：kg·m⁻³）、depth（水深，单位：m）、dr_latitude（航位推算纬度，单位：%）、dr_longitude（航位推算经度，单位：%）、dtime（时间戳：自1970-01-01T00:00:00Z以来的秒数）、eng_head（航向角，单位：弧度）、eng_pitchAng（俯仰角，单位：弧度）、eng_rollAng（横滚角，单位：弧度）、instrument_ctd（CTD元数据，取值为1）、lat_uv（深度平均纬度，单位：degrees_north）、latitude（剖面纬度，单位：degrees_north）、lon_uv（深度平均经度，单位：degrees_east）、longitude（剖面经度，单位：degrees_east）、m_battery（电池电压，单位：V）、m_battpos（电池位置，单位：英寸）……（共60余个额外变量）