Temperature profile data collected using XBTs from the ALSTER EXPRESS and other platforms from the Pacific Ocean during the Thermal Structure Monitoring Program in the Pacific (TRANSPAC) project, 1981-04-03 to 1983-10-04 (NODC Accession 8400011)

Temperature profile data were collected using bathythermograph (BT/XBT) casts from ALSTER EXPRESS and other platforms in the Pacific Ocean from April 3, 1981 to October 4, 1983. Data were submitted by Scripps Institution of Oceanography as part of the Thermal Structure Monitoring Program in the Pacific (TRANSPAC) project. Data were processed by NODC to the NODC standard Universal Bathythermograph Output (UBT) format. Full BT descriptions are available at http://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 record was comprised of pairs of temperature-depth values. Unlike the MBT Data File, in which temperature values were recorded at uniform 5 m intervals, the XBT data files contained 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. With special instruments, measurements can be obtained to 1830 m.本数据集的温度剖面数据采集于1981年4月3日至1983年10月4日的太平洋海域，通过“阿尔斯特快车”号（ALSTER EXPRESS）及其他观测平台的温深计（bathythermograph, BT/XBT）观测站位获取。该数据由斯克里普斯海洋研究所（Scripps Institution of Oceanography）提交，作为太平洋热结构监测计划（Thermal Structure Monitoring Program in the Pacific, TRANSPAC）的组成部分。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温深计输出（Universal Bathythermograph Output, UBT）格式。完整的温深计相关说明可通过以下链接查阅：http://www.nodc.noaa.gov/General/NODC-Archive/bt.html。 通用温深计输出（UBT）格式包含使用投弃式温深计（expendable bathythermograph, XBT）设备获取的温度-深度剖面数据。每条观测记录均附带航次信息、观测位置、观测日期与时间。数据记录由一组组温度-深度数值对构成。与机械式温深计（Mechanical Bathythermograph, MBT）数据文件不同，后者以均匀5米的间隔记录温度数值，而XBT数据文件中的温度数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测点数量（即“拐点”）进行记录。标准投弃式温深计可获取的剖面最大深度为450米或760米；若使用专用设备，测量深度可达1830米。