Oceanographic station data from bottle casts from the ABSECON from Ocean Weather Station B (OWS-B) in the North Atlantic Ocean for 1970-01-02 (NODC Accession 7000210)

Oceanographic station data were collected from the ABSECON within a 1-mile radius of Ocean Weather Station B (5630N 05100W) and in transit. Data were collected by the United States Coast Guard (USCG) from 02 January 1970 to 02 January 1970. 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ABSECON平台，覆盖范围为海洋气象站B（56°30′N，51°00′W）周边1英里范围内海域及航行途中区域。数据采集工作由美国海岸警卫队（United States Coast Guard, USCG）于1970年1月2日完成。所有数据均由美国国家海洋数据中心（National Oceanographic and Data Center, NODC）处理为NODC标准站数据II输出格式（Station Data II Output Format, SD2）。完整的格式说明可通过NODC官网https://www.nodc.noaa.gov/General/NODC-Archive/sd2.html查阅。

SD2格式存储了离散深度层级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）或其他类型的水体采样器完成，仅少量（约占总数据量5%）数据通过电子电导率-温度-深度记录仪（conductivity-temperature-depth, CTD）或盐度-温度-深度记录仪（salinity-temperature-depth, STD）获取。不过，CTD/STD数据均按照与南森采水数据一致的深度层级上报至NODC，并与南森采水数据采用相同流程进行处理与存储。每个测站均附带航行相关信息，包括作业船只、所属国家、研究机构、观测位置、日期与时间。核心观测参数为温度与盐度，此外还可记录溶解氧、磷酸盐、总磷、硅酸盐、硝酸盐、亚硝酸盐及pH值等指标。采水作业时的气象条件，例如气温、气压、风速、浪况等也可被记录，同时还可附带辅助观测数据，如水体颜色（福勒尔-于勒色度标度，Forel-Ule scale）、水体透明度（塞氏盘深度，Secchi disk depth）以及海底深度。密度（西格马-t，sigma-t）、声速及动态深度异常值均可通过实测参数计算得到。每个测站既包含实测深度层级的原始观测数据，也包含经插值得到的标准深度层级数据集。