Oceanographic station data from bottle casts from the COOK INLET from Ocean Weather Station C (OWS-C) in the North Atlantic Ocean from 07 October 1968 to 03 November 1968 (NODC Accession 6900107)

Oceanographic station data were collected from the COOK INLET within a 1-mile radius of Ocean Weather Station C (5245N 03530W) and in transit. Data were collected by the United States Coast Guard (USCG) from 07 October 1968 to 03 November 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.

本数据集的海洋观测站数据采集自库克湾（COOK INLET）内距海洋气象站C（52°45′N 035°30′W）1英里范围以内区域，以及航行途经海域。数据采集工作由美国海岸警卫队（United States Coast Guard, USCG）于1968年10月7日至11月3日期间开展。数据经美国国家海洋数据中心（National Oceanographic Data Center, NODC）处理，采用NODC标准观测站数据II输出格式（Station Data II Output Format, SD2）。格式完整说明可于NODC官网www.nodc.noaa.gov/General/NODC-Archive/sd2.html查询。

SD2格式存储了离散深度层采集的物理化学海洋学观测数据。绝大多数观测采用多瓶式南森采水站位或其他类型水体采样器开展，少量数据（约占总数据量的5%）通过电子电导率-温度-深度（conductivity-temperature-depth, CTD）仪或盐度-温度-深度（salinity-temperature-depth, STD）记录仪获取。不过，CTD/STD数据按照与南森采水数据一致的深度层级上报至NODC，其处理与存储流程与南森采水数据完全一致。

每个观测站均附带航行信息（如作业船舶、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。采样作业时的气象条件（如气温、气压、风速、浪况）亦可被记录，同时附带水体颜色（采用福勒-乌勒色度标（Forel-Ule scale））、水体透明度（塞氏盘深度）及海底深度等辅助数据。密度（σ_t）、声速及动态深度异常值可通过实测参数计算得到。每个观测站既包含实测深度层的观测数据，也包含经插值得到的标准深度层级数据。