Oceanographic station data from bottle casts from the DUANE from Ocean Weather Station B (OWS-B) in the North Atlantic Ocean from 13 February 1972 to 04 March 1972 (NODC Accession 7201003)

Oceanographic station data were collected from the DUANE 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 13 February 1972 to 04 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.

本数据集的海洋测站数据采集自杜安号（DUANE），采集范围涵盖海洋气象站B（56°30′N，51°00′W）周边1英里半径海域及航行途中区域。数据由美国海岸警卫队（United States Coast Guard, USCG）于1972年2月13日至3月4日期间采集完成。数据由国家海洋数据中心（National Oceanographic Data Center, NODC）按照其标准站数据II输出格式（Station Data II Output Format, SD2）进行标准化处理。完整的格式说明可通过NODC官网的以下链接获取：www.nodc.noaa.gov/General/NODC-Archive/sd2.html。

SD2格式存储了在离散深度层级采集的物理-化学海洋学数据。多数观测采用多瓶式南森采水器（multi-bottle Nansen casts）或其他水体采样器完成。约5%的少量数据则通过电子CTD（conductivity-temperature-depth，电导率-温度-深度）或STD（salinity-temperature-depth，盐度-温度-深度）记录仪获取。但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。每个测站均附带航行相关信息，包括船舶、所属国家/机构、观测位置、日期及时间。核心测量参数为温度与盐度，同时亦可报告溶解氧、磷酸盐、总磷、硅酸盐、硝酸盐、亚硝酸盐及pH值等指标。采样时刻的气象条件，如气温、气压、风速、浪况，亦可被记录；辅助数据则包括水色（福尔-尤勒色标，Forel-Ule scale）、水体透明度（塞氏盘深度，Secchi disk depth）及海底水深等。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。每个测站既包含实测深度层级的原始观测数据，同时也附带经插值得到的标准深度层级数据集。