Oceanographic station data from bottle casts from the CHINCOTEAGUE from Ocean Weather Station B (OWS-B) in the North Atlantic Ocean 02 July 1968 to 25 July 1968 (NODC Accession 6800342)

Oceanographic station data were collected from the CHINCOTEAGUE 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 July 1968 to 25 July 1968. 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.

本数据集的海洋站观测数据由钦科蒂格号（CHINCOTEAGUE）采集，观测范围覆盖海洋气象站B（北纬56°30′，西经51°00′）周边1英里海域以及航行途经区域。数据由美国海岸警卫队（United States Coast Guard, USCG）于1968年7月2日至1968年7月25日完成采集。美国国家海洋数据中心（National Oceanographic Data Center, NODC）将所有数据统一处理为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官方网址获取：www.nodc.noaa.gov/General/NODC-Archive/sd2.html。

SD2格式存储了离散深度层的物理海洋与化学海洋学观测数据。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。仅少量数据（约占总数据量的5%）通过电子导电率-温度-深度仪（conductivity-temperature-depth, CTD）或盐度-温度-深度仪（salinity-temperature-depth, STD）记录获取。不过，CTD与STD采集的数据均按照与南森采水数据一致的深度层级上报至NODC，其处理与存储流程也与南森采水数据完全相同。每个测站均附带航行信息（如船舶、所属国家、所属机构等）、观测位置、日期与时间。核心观测参数以温度与盐度为主，但同时也会记录溶解氧、磷酸盐、总磷、硅酸盐、硝酸盐、亚硝酸盐以及pH值等参数。采水作业时的气象条件（如气温、气压、风速、浪况等）也可被记录，此外还会附带辅助观测数据，例如水体颜色（福尔-乌勒色级，Forel-Ule scale）、水体透明度（塞氏盘深度，Secchi disk depth）以及海底深度。密度（sigma-t）、声速以及动力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的原始观测数据，同时也附带经插值得到的标准深度层数据集。