Temperature profiles from XBT casts from the CARIBOU REEFER II as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 08 April 1981 to 09 April 1981 (NODC Accession 8100553)

Temperature profiles were collected from XBT casts from the CARIBOU REEFER II from 08 April 1981 to 09 April 1981. Data were collected by the National Marine Fisheries Service (NMFS) as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project. Data were processed by NODC to the NODC standard Universal Bathythermograph Output (UBT) format. Full format description is available from NODC at www.nodc.noaa.gov/General/NODC-Archive/bt.html. The UBT format contains temperature-depth profile data obtained using expendable bathythermograph (XBT) instruments. Cruise information, position, date and time were reported for each observation. The data records are comprised of pairs of temperature-depth values. The XBT data files contain temperature values at non-uniform depths. These depths were recorded at the minimum number of points (''''inflection points'''') required to accurately define the temperature curve. Standard XBTs can obtain profiles to depths of either 450 or 760 m. Special instruments permitted measurements to be obtained to 1830 m.1981年4月8日至1981年4月9日期间，从“卡里布礁二号”（CARIBOU REEFER II）科考船的投弃式温深仪（expendable bathythermograph，以下简称XBT）下投作业中获取了温度剖面数据。本次数据由美国国家海洋渔业局（National Marine Fisheries Service，以下简称NMFS）作为海洋资源监测、评估与预测（Marine Resources Monitoring, Assessment and Prediction，以下简称MARMAP）项目的组成部分开展采集工作。数据经美国国家海洋数据中心（National Oceanographic Data Center，以下简称NODC）处理，转换为符合NODC标准的通用温深仪输出（Universal Bathythermograph Output，以下简称UBT）格式。完整的格式说明可通过NODC官网的以下链接获取：www.nodc.noaa.gov/General/NODC-Archive/bt.html。 UBT格式存储了通过XBT设备获取的温深剖面数据。每条观测记录均包含航次信息、观测位置、观测日期与时间。数据记录由多组温深数值对构成。XBT数据文件中存储的温度值对应非均匀分布的深度，这些深度以精准刻画温度变化曲线所需的最少拐点（inflection points）数量进行记录。标准XBT设备可获取的剖面最大深度为450米或760米，特殊定制设备则可实现1830米深度的测量。