Oceanographic station data from bottle casts from the BIBB from Ocean Weather Station B (OWS-B) in the North Atlantic Ocean from 27 November 1973 to 12 December 1973 (NODC Accession 7400476)

Oceanographic station data were collected from the BIBB within a 1-mile radius of Ocean Weather Station B (5630N 5100W) and in transit. Data were collected by the United States Coast Guard (USCG) from 27 November 1973 to 12 December 1973. 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BIBB平台，覆盖范围涵盖海洋气象站B（56°30′N，51°00′W）周边1英里海域及航行途中。该数据由美国海岸警卫队（United States Coast Guard, USCG）于1973年11月27日至1973年12月12日期间采集。数据经国家海洋数据中心（National Oceanographic Data Center, NODC）处理为NODC标准站数据II输出格式（SD2）。完整的格式说明可从NODC官网https://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。绝大多数观测通过多瓶南森采水站次（multi-bottle Nansen casts）或其他类型水体采样装置完成。约5%的少量观测数据则通过电子电导-温度-深度仪（CTD）或盐度-温度-深度仪（STD）记录器获取。不过，CTD/STD数据上报至NODC时的深度层级与南森采水数据保持一致，因此其处理与存储流程与南森采水数据完全相同。每个海洋站均附带航次信息（如船舶、所属国家、所属机构）、站位坐标、观测日期与时间。核心观测参数以温度和盐度为主，同时也可涵盖溶解氧、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（如气温、气压、风向风速、海浪情况）亦可被记录，同时还会附带诸如水色（福勒-于勒色度标，Forel-Ule scale）、水体透明度（塞氏盘深度，Secchi disk depth）及海底深度等辅助数据。密度（sigma-t）、声速及动态深度异常值可通过实测参数计算得到。每个海洋站既包含实测深度层级下的观测数据，也包含经插值得到的标准深度层级数据集。