WATER TEMPERATURE and other data from AIRCRAFT from 1972-11-01 to 1972-11-30 (NCEI Accession 7201440)

Data has been processed by NODC to the NODC standard Bathythermograph (XBT Aircraft) (C118) format.

The C116/C118 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. Prior to July 1994, XBT data were routinely processed to one of these standard types. XBT data are now processed and loaded directly in to the NODC Ocean Profile Data Base (OPDB). Historic data from these two data types were loaded into the OPDB.

数据已由NODC（美国国家海洋和大气管理局）按照NODC标准水文温度计（XBT飞机）格式（C118）进行处理。该C116/C118格式包含了使用可抛式水文温度计（XBT）仪器获取的温度-深度剖面数据。对于每一次观测，均报告了巡航信息、位置、日期和时间。数据记录由温度-深度值的成对出现组成。与记录温度值以均匀5米间隔的MBT数据文件不同，XBT数据文件包含的温度值在非均匀深度。这些深度记录在能够准确定义温度曲线的最小数量点（“拐点”）上。标准XBT可获取至450米或760米的剖面。通过特殊仪器，测量值可扩展至1830米。在1994年7月之前，XBT数据通常被处理为这些标准类型之一。现在，XBT数据被直接处理并加载到NODC海洋剖面数据库（OPDB）中。这两种数据类型的历史数据已被加载到OPDB中。