Temperature profiles from XBT casts from the TANEY from Ocean Weather Station H (OWS-H) in the North Atlantic Ocean from 09 December 1976 to 30 December 1976 (NODC Accession 7700012)
收藏资源简介:
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 09 December 1976 to 30 December 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.
温深仪(Bathythermograph)数据由“TANEY”号在海洋气象站H(38°00′N,71°00′W)周边1英里范围内及航行途中采集。该数据集由美国海岸警卫队于1976年12月9日至1976年12月30日期间采集。该观测平台配备专业监测设备并配有操作人员,用于开展气象与海洋状况观测。数据由美国国家海洋数据中心(NODC)按照其制定的通用温深仪输出格式(Universal Bathythermograph Output, UBT)标准进行处理。完整的格式说明可从美国国家海洋数据中心(NODC)官网的以下链接获取:www.nodc.noaa.gov/General/NODC-Archive/bt.html。 UBT文件格式用于存储通过投弃式温深仪(expendable bathythermograph, XBT)获取的温度-深度剖面数据。标准投弃式温深仪可获取约450米或760米深度的剖面数据;若使用专用仪器,测量深度可达1830米。每条观测记录均包含航行信息、观测位置、日期与时间。数据记录由多组温度-深度数值对组成。与机械温深仪(MBT)数据文件不同——后者以均匀5米的间隔记录温度数值,XBT数据文件中的温度数值对应非均匀的深度。这些深度点为将温度曲线记录至可接受精度所需的最少点数,亦称“拐点(inflection points)”。但在数据输出时,用户可选择获取拐点处的温度数值,或通过插值得到均匀深度增量下的温度数值。



