Temperature profiles from mechanical bathythermograph (MBT) casts from the USS OBSERVER in the North Atlantic Ocean in support of the Fleet Observations of Oceanographic Data (FLOOD) project from 15 June 1959 to 15 July 1959 (NODC Accession 5900073)

MBT data were collected from the USS OBSERVER in support of the Fleet Observations of Oceanographic Data (FLOOD) project. Data were collected by US Navy; Ships of Opportunity from 15 June 1959 to 15 July 1959. 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.

本数据集的机械式海水温深仪（Mechanical Bathythermograph, MBT）数据采集自美国海军“观察者”号舰艇（USS OBSERVER），用于支撑海洋学数据舰队观测（Fleet Observations of Oceanographic Data, FLOOD）项目。数据采集时间为1959年6月15日至1959年7月15日，由美国海军所属的机遇观测船完成。该观测平台配备专用设备与操作人员，用于观测气象与海洋状况。数据经美国国家海洋数据中心（National Oceanographic Data Center, NODC）处理，符合NODC标准的通用温深仪输出（Universal Bathythermograph Output, UBT）格式。完整格式说明可通过NODC官网www.nodc.noaa.gov/General/NODC-Archive/bt.html查询获取。

UBT文件格式用于存储通过机械式海水温深仪（MBT）采集得到的温度-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。每条观测记录均包含航次信息、观测日期、位置与时间。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按照均匀的5米深度间隔进行记录。