Oceanographic station data from bottle casts from the GALLATIN from Ocean Weather Station C (OWS-C) in the North Atlantic Ocean from 26 March 1972 to 29 March 1972 (NODC Accession 7201241)

Oceanographic station data were collected from the GALLATIN within a 1-mile radius of Ocean Weather Station C (5245N 0352W) and in transit. Data were collected by the United States Coast Guard (USCG) from 26 March 1972 to 29 March 1972. Data were processed by NODC to the NODC standard Station Data II Output Format (SD2). Full format description is available from NODC at www.nodc.noaa.gov/General/NODC-Archive/sd2.html.

The SD2 format contains physical-chemical oceanographic data recorded at discrete depth levels. Most of the observations were made using multi-bottle Nansen casts or other types of water samplers. A small amount (about 5 percent) were obtained using electronic CTD (conductivity-temperature-depth) or STD (salinity-temperature-depth) recorders. The CTD/STD data were reported to NODC at depth levels equivalent to Nansen cast data, however, and have been processed and stored the same as the Nansen data. Cruise information (e.g., ship, country, institution), position, date, and time, and reported for each station. The principal measured parameters and temperature and salinity , but dissolved oxygen, phosphate, total phosphorus, silicate, nitrate, nitrite, and pH may be reported. Meteorological conditions at the time of the cast (e.g., air temperature and pressure, wind, waves) may also be reported, as well as auxiliary data such as water color (Forel-Ule scale), water transparency (Secchi disk depth), and depth to bottom. Values of density (sigma-t) sound velocity, and dynamic depth anomaly are computed from measured parameters. Each station contains the measurements taken at the observed depth levels, but also includes data values interpolated to a set of standard depth levels.

本数据集的海洋站数据采集自“加拉廷号”（GALLATIN）作业船，覆盖范围为海洋气象站C（52°45′N，035°02′W）周边1英里海域及航行途中。数据由美国海岸警卫队（United States Coast Guard，USCG）于1972年3月26日至1972年3月29日采集，后由美国国家海洋数据中心（National Oceanographic Data Center，NODC）处理为NODC标准站数据II输出格式（Station Data II Output Format，SD2）。完整格式说明可通过NODC官网www.nodc.noaa.gov/General/NODC-Archive/sd2.html获取。
SD2格式包含离散深度层级下记录的物理-化学海洋学数据。绝大多数观测采用多瓶式南森采水器（multi-bottle Nansen casts）或其他类型水样采集器完成，仅约5%的数据通过电子电导率-温度-深度仪（conductivity-temperature-depth，CTD）或盐度-温度-深度仪（salinity-temperature-depth，STD）记录仪获取。尽管CTD/STD数据上报至NODC时采用与南森采水数据一致的深度层级，但后续均按与南森采水数据相同的流程进行处理与存储。每个海洋站均附带航次信息（如作业船、所属国家/机构）、站位坐标、日期与时间。核心观测参数以温度和盐度为主，同时可能包含溶解氧、磷酸盐、总磷、硅酸盐、硝酸盐、亚硝酸盐及pH值等指标。观测时的气象条件（如气温、气压、风速、浪况）也可被记录，此外还可附带辅助数据，例如海水颜色（福勒-于勒色度标，Forel-Ule scale）、海水透明度（塞氏盘深度，Secchi disk depth）及海底水深。研究人员可通过实测参数计算得到密度（σ_t）、声速及动态深度异常值。每个海洋站既包含实测深度层级下的观测数据，也包含通过插值得到的标准深度层级对应的数据值。