Temperature profile data collected using XBTs from the ENDEAVOR from the Atlantic Ocean during the International Decade of Ocean Exploration / combination of USSR POLYGON project and US MODE (IDOE/POLYMODE) project, 08 May 1978 to 25 May 1978 (NODC Accession 8000135)

Temperature profile data were collected using bathythermograph (BT/XBT) casts from ENDEAVOR in the Atlantic Ocean from May 8, 1978 to May 25, 1978. Data were submitted by University of Rhode Island; Graduate School of Oceanography as part of the INTERNATIONAL DECADE OF OCEAN EXPLORATION / combination of USSR POLYGON project and US MODE (IDOE/POLYMODE) 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自1978年5月8日至5月25日期间大西洋海域内奋进（ENDEAVOR）号科考船的深海测温仪（bathythermograph, BT/XBT）走航观测数据。该数据由罗德岛大学（University of Rhode Island）海洋研究生院提交，属于国际海洋勘探十年计划（INTERNATIONAL DECADE OF OCEAN EXPLORATION, IDOE）与苏联POLYGON项目、美国MODE项目的联合研究项目（IDOE/POLYMODE）产出数据。美国国家海洋数据中心（NODC）已将该数据处理为NODC标准通用深海测温仪输出格式（Universal Bathythermograph Output, UBT）。完整的深海测温仪相关说明可访问：http://www.nodc.noaa.gov/General/NODC-Archive/bt.html。 UBT格式存储了通过投弃式深海测温仪（expendable bathythermograph, XBT）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、日期与时间。数据记录由温度-深度值配对组成。与以5米等间隔记录温度值的MBT数据文件不同，XBT数据文件中的温度值对应非均匀分布的深度测点，这些测点仅选取精准刻画温度曲线所需的最少数量点（即拐点（inflection points））。标准XBT设备可获取最大深度为450米或760米的剖面数据，若使用专用设备则可将测量深度提升至1830米。