Oceanographic station data from CTD casts from the ANDROSCOGGIN from Ocean Weather Station E (OWS-E) in the North Atlantic Ocean 12 November 1969 to 11 December 1969 (NODC Accession 7000168)

Oceanographic station data were collected from the ANDROSCOGGIN within a 1-mile radius of Ocean Weather Station E (3500N 04800W) and in transit. Data were collected by the United States Coast Guard (USCG) from 12 November 1969 to 11 December 1969. 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“ANDROSCOGGIN”号科考船，覆盖范围为海洋气象站E（35°00′N，48°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1969年11月12日至1969年12月11日期间完成。数据由国家海洋数据中心（National Oceanographic Data Center, NODC）处理为该中心标准测站数据II输出格式（Station Data II Output Format, SD2），该格式的完整说明可从国家海洋数据中心官网获取，网址为www.nodc.noaa.gov/General/NODC-Archive/sd2.html。 SD2格式存储了离散深度层采集的物理化学海洋学数据。大部分观测采用多瓶式南森采水剖面或其他类型水体采样器完成，约5%的少量观测数据则通过电子CTD（电导率-温度-深度）或STD（盐度-温度-深度）记录仪获取。不过，提交至NODC的CTD/STD数据已统一匹配南森采水观测的深度层级，其处理与存储流程与南森采水数据完全一致。每个测站均附带航次信息（如科考船、所属国家及机构）、经纬度位置、观测日期与时间。核心观测参数以温度和盐度为主，同时可包含溶解氧、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、海浪状况）以及辅助观测数据（如水体颜色（弗洛尔-乌勒色标）、水体透明度（塞氏盘深度）、海底水深）亦可纳入数据集。研究人员可通过实测参数计算得到密度（sigma-t）、声速及动态深度异常值。每个测站既包含实测深度层的观测数据，同时也附带经插值得到的标准深度层级数据集。