Oceanographic station data from bottle casts from the GALLATIN from Ocean Weather Station E (OWS-E) in the North Atlantic Ocean from 13 March 1973 to 09 April 1973 (NODC Accession 7300975)

Oceanographic station data were collected from the GALLATIN within a 1-mile radius of Ocean Weather Station E (3500N 0480W) and in transit. Data were collected by the United States Coast Guard (USCG) from 13 March 1973 to 09 April 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.本数据集为在E号海洋气象站（35°00′N，048°00′W）周边1英里范围内及航行途中，于GALLATIN号上采集的海洋测站数据。数据由美国海岸警卫队（United States Coast Guard, USCG）于1973年3月13日至1973年4月9日采集完成。国家海洋数据中心（National Oceanographic Data Center, NODC）已将上述数据处理为NODC标准站数据II输出格式（Station Data II Output Format, SD2），完整格式说明可通过NODC官方网址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。多数观测采用多瓶式南森采水器（multi-bottle Nansen casts）或其他类型水样采集器完成，仅约5%的少量数据通过电子电导率-温度-深度仪（conductivity-temperature-depth, CTD）或盐度-温度-深度仪（salinity-temperature-depth, STD）记录仪获取。不过，CTD/STD数据均以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。 每个测站均记录有航次信息（如船舶、所属国家、研究机构）、经纬度位置、观测日期与时间。核心观测参数为温度与盐度，同时也可记录溶解氧、磷酸盐、总磷、硅酸盐、硝酸盐、亚硝酸盐及pH值。采水作业时的气象条件（如气温、气压、风速、浪况）同样可被记录，辅助数据则包括水色（弗洛尔-乌勒色级，Forel-Ule scale）、水体透明度（塞氏盘深度，Secchi disk depth）及海底水深。密度（sigma-t）、声速及动力深度距平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下的原始观测数据，同时也包含经插值得到的标准深度层级数据集。