Oceanographic station data from bottle casts from the BIBB and Other Platforms from Ocean Weather Station H (OWS-H) in the North Atlantic Ocean from 06 February 1976 to 26 May 1976 (NODC Accession 7601610)

Oceanographic station data were collected from the BIBB and Other Platforms within a 1-mile radius of Ocean Weather Station H (3800N 07100W) and in transit. Data were collected by the United States Coast Guard (USCG) from 06 February 1976 to 26 May 1976. 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海洋气象站H（38°00′N，071°00′W）周边1英里范围内的BIBB平台及其他平台，以及航行途中的相关载体。数据由美国海岸警卫队（United States Coast Guard, USCG）于1976年2月6日至1976年5月26日采集完成，随后由国家海洋数据中心（National Oceanographic Data Center, NODC）处理为NODC标准站数据II输出格式（Station Data II Output Format, SD2）。完整的格式说明可从NODC官网获取，网址为www.nodc.noaa.gov/General/NODC-Archive/sd2.html。

SD2格式包含离散深度层级下记录的物理化学海洋学数据。绝大多数观测采用多瓶Nansen采水器投放或其他类型水体采样器完成，少量（约占总样本量的5%）数据则通过电子电导率-温度-深度（Conductivity-Temperature-Depth, CTD）记录仪或盐度-温度-深度（Salinity-Temperature-Depth, STD）记录仪获取。不过，CTD/STD数据是以与Nansen采水器投放数据一致的深度层级上报至NODC，其处理与存储流程与Nansen采水数据完全一致。每个海洋站均附带航行信息（如船舶、所属国家、研究机构）、站位坐标、观测日期与时间等元数据。核心观测参数以温度和盐度为主，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，辅助数据则包括水体颜色（采用Forel-Ule色标分级）、水体透明度（塞氏盘深度）以及海底水深。密度（sigma-t）、声速及动力深度异常等指标可通过实测参数计算得到。每个海洋站既包含实测深度层级下的原始观测数据，同时也附带经插值生成的标准深度层级数据集。