Temperature profiles from XBT casts from the AMERICAN ARGO and other platforms as part of the Marine Resources Monitoring, Assessment and Prediction (MARMAP) project from 1979-12-14 to 1980-01-22 (NODC Accession 8000023)

Temperature profiles were collected from XBT casts from the AMERICAN ARGO and other platforms from 14 December 1979 to 22 January 1980. Data were collected by Moore-McCormack Lines Inc. and other institutions 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.

本数据集的温度剖面数据采集自1979年12月14日至1980年1月22日期间，由美国ARGO（AMERICAN ARGO）及其他观测平台的投放式温深仪（expendable bathythermograph, XBT）投放观测获取。该数据由穆尔-麦科马克航运公司（Moore-McCormack Lines Inc.）及其他机构作为海洋资源监测、评估与预测（Marine Resources Monitoring, Assessment and Prediction, MARMAP）项目的一部分采集得到。数据由美国国家海洋数据中心（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。完整格式说明可从NODC官网的https://www.nodc.noaa.gov/General/NODC-Archive/bt.html页面获取。
UBT格式包含通过XBT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、日期与时间。数据记录由温深数值对构成。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曲线所需的最少数量的拐点（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，特殊定制的XBT则可实现1830米深度的测量。