Temperature profiles from mechanical bathythermograph (MBT) casts from the USS LOYALTY in the North Pacific Ocean in support of the Fleet Observations of Oceanographic Data (FLOOD) project from 18 June 1969 to 23 June 1969 (NODC Accession 6900720)

MBT data were collected from the USS LOYALTY in support of the Fleet Observations of Oceanographic Data (FLOOD) project. Data were collected by US Navy; Ships of Opportunity from 18 June 1969 to 23 June 1969. The platform was equipped and staffed to observe weather and sea conditions. 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 file format is used for temperature-depth profile data obtained using the mechanical bathythermograph (MBT) instrument. The maximum depth of MBT observations is approximately 285 m. Therefore, MBT data are useful only in studying the thermal structure of the upper layers of the ocean. Cruise information, date, position, and time are reported for each observation. The data record comprises pairs of temperature-depth values. Temperature data in this file are recorded at uniform 5 m depth intervals.

本数据集的机械探温仪（Mechanical Bathythermograph, MBT）数据采集自美国海军“忠诚号”（USS LOYALTY）舰艇，服务于海洋数据舰队观测（Fleet Observations of Oceanographic Data, FLOOD）项目。数据由美国海军及机遇船舶于1969年6月18日至1969年6月23日采集完成。该观测平台配备专业观测设备并配有操作人员，可开展气象与海洋状况的监测工作。数据已由国家海洋数据中心（National Oceanographic Data Center, NODC）处理为其标准的通用探温仪输出（Universal Bathythermograph Output, UBT）格式。完整的格式说明可通过NODC官网www.nodc.noaa.gov/General/NODC-Archive/bt.html查询获取。

UBT文件格式专用于存储通过机械探温仪（MBT）获取的温度-深度剖面数据。MBT观测的最大探测深度约为285米，因此该类数据仅适用于研究海洋上层的热结构特征。每条观测记录均附带航次信息、观测日期、位置及时间戳。数据记录由多组温度-深度数值对构成。本文件中的温度数据以5米的均匀深度间隔进行采集记录。