Physical data from CTD casts in the North Pacific Ocean from the THOMAS G. THOMPSON and the THOMAS WASHINGTON in support of the Marathon 2 Project from 05 May 1985 to 07 September 1987 (NODC Accession 9400131)

Temperature and salinity profiles were collected from CTD casts in the North Pacific Ocean from the THOMAS G. THOMPSON and the THOMAS WASHINGTON. Data were collected by Scripps Institute of Oceanography (SIO) in support of the Marathon 2 Project from 05 May 1985 to 07 September 1987. Data were processed by NODC to the NODC standard F022 High-Resolution CTD/STD Output Format. Full format description is available from NODC at www.nodc.noaa.gov/General/NODC-Archive/f022.html.

The F022 format contains high-resolution data collected using CTD (conductivity-temperature-depth) and STD (salinity-temperature-depth) instruments. As they are lowered and raised in the oceans, these electronic devices provide nearly continuous profiles of temperature, salinity, and other parameters. Data values may be subject to averaging or filtering or obtained by interpolation and may be reported at depth intervals as fine as 1m. Cruise and instrument information, position, date, time and sampling interval are reported for each station. Environmental data at the time of the cast (meteorological and sea surface conditions) may also be reported. The data record comprises values of temperature, salinity or conductivity, density (computed sigma-t), and possibly dissolved oxygen or transmissivity at specified depth or pressure levels. Data may be reported at either equally or unequally spaced depth or pressure intervals. A text record is available for comments.

本数据集收录了北太平洋海域通过CTD（conductivity-temperature-depth，电导率-温度-深度仪）剖面测量获取的温度与盐度剖面数据，测量搭载平台为“THOMAS G. THOMPSON”号与“THOMAS WASHINGTON”号考察船。数据由斯克里普斯海洋研究所（Scripps Institute of Oceanography, SIO）采集，用于支持Marathon 2项目，采集时段为1985年5月5日至1987年9月7日。所有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F022高分辨率CTD/STD输出格式的标准数据。完整的格式说明可从NODC官网www.nodc.noaa.gov/General/NODC-Archive/f022.html获取。

F022格式存储了使用CTD与STD（salinity-temperature-depth，盐度-温度-深度仪）设备采集的高分辨率观测数据。此类电子设备在海洋中下放与回收过程中，可近乎连续地获取温度、盐度及其他参数的剖面数据。原始数据可经过平均、滤波处理或通过插值生成，也可按精度最高达1米的深度间隔进行记录上报。每个测站均记录有航次与仪器信息、站位坐标、观测日期、时间及采样间隔。测站作业时的环境数据（包括气象与海面状况）也可一并记录。数据记录包含指定深度或压力层级下的温度、盐度或电导率、密度（计算得到的σ-t），以及可能存在的溶解氧或透射率数据。数据可按等间距或不等间距的深度或压力间隔进行上报。此外还附带文本记录字段用于填写相关注释。