Temperature profiles from XBT casts from the CARIBOU REEFER as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 07 May 1978 (NODC Accession 7800391)

Temperature profiles were collected from XBT casts from the CARIBOU REEFER from 07 May 1978. Data were collected 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.1978年5月7日，从“卡里布礁号”（CARIBOU REEFER）搭载的投弃式温深仪（expendable bathythermograph, XBT）投放作业中获取了温度剖面数据。本数据集作为海洋资源监测、评估与预测（Marine Resources Monitoring, Assessment and Prediction, MARMAP）项目的一部分被采集，后由国家海洋数据中心（National Oceanographic Data Center, NODC）处理为符合NODC标准的通用温深仪输出（Universal Bathythermograph Output, UBT）格式。完整的格式说明可从NODC获取，网址为www.nodc.noaa.gov/General/NODC-Archive/bt.html。 UBT格式包含使用投弃式温深仪（expendable bathythermograph, XBT）获取的温度-深度剖面数据。每份观测记录均包含航次信息、观测位置、日期与时间。数据记录由温度-深度值对构成。XBT数据文件中的温度值对应非均匀分布的深度，这些深度以准确刻画温度曲线所需的最少测点数量——即拐点（inflection points）——进行记录。标准型XBT可获取的剖面最大深度为450米或760米，特制型仪器则可实现1830米深度的测量。