Temperature profiles from XBT casts from the TANEY from Ocean Weather Station H (OWS-H) in the North Atlantic Ocean from 29 December 1975 to 16 January 1976 (NODC Accession 7600328)

Bathythermograph data were collected from the TANEY within a 1-mile radius of Ocean Weather Station H (3800N 07100W) and in transit. Data were collected by the United States Coast Guard from 29 December 1975 to 16 January 1976. 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 expendable bathythermograph (XBT) instrument. Standard XBTs can obtain profiles at depths of about 450 or 760 m. With special instruments, measurements can be obtained to 1830 m. Cruise information, position, date, and time are reported for each observation. The data record comprises pairs of temperature-depth values. Unlike the MBT data file, in which temperature values are recorded at uniform 5m intervals, the XBT Data File contains temperature values at non-uniform depths. These depths are at a minimum number of points ("inflection points") required to record the temperature curve to an acceptable degree of accuracy. On output, however, the user may request temperature values either at inflection points or interpolated to uniform depth increments.

本数据集为海水温度深度记录仪（Bathythermograph）数据，采集自TANEY号平台，覆盖H号海洋气象站（北纬38°00′、西经71°00′）周边1英里范围及航行途中海域。数据由美国海岸警卫队于1975年12月29日至1976年1月16日期间采集。该平台配备专业观测设备并安排人员开展气象与海洋状况监测。数据已由美国国家海洋数据中心（National Oceanographic Data Center, NODC）处理为符合其标准的通用海水温度深度记录仪输出（Universal Bathythermograph Output, UBT）格式。完整格式说明可通过NODC官方网址https://www.nodc.noaa.gov/General/NODC-Archive/bt.html获取。

UBT文件格式用于存储通过抛弃式海水温度深度记录仪（expendable bathythermograph, XBT）获取的温度-深度剖面数据。标准型XBT可获取约450米或760米水深范围内的剖面数据；若配备专用仪器，测量水深可达1830米。每份观测记录均包含航次信息、观测位置、日期与时间。数据记录由多组温度-深度数值对构成。与机械海水温度深度记录仪（Mechanical Bathythermograph, MBT）数据文件不同，XBT数据文件中的温度数值并非按每5米的均匀深度间隔记录，而是仅在记录温度曲线至可接受精度所需的最少点数（即“拐点”）处采集。但在数据输出环节，用户可选择获取拐点处的原始温度值，或通过插值得到均匀深度间隔下的温度数值。