Oceanographic station data from CTD casts from the CHINCOTEAGUE from Ocean Weather Station C (OWS-C) and D (OWS-D) in the North Atlantic Ocean 03 September 1970 to 10 October 1970 (NODC Accession 7100473)

Oceanographic station data were collected from the CHINCOTEAGUE within a 1-mile radius of Ocean Weather Station C (5245N 03530W), and D (4400N 04100W), and in transit. Data were collected by the United States Coast Guard (USCG) from 03 September 1970 to 10 October 1970. 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奇科特格号（CHINCOTEAGUE），采集范围涵盖海洋气象站C（52°45′N，035°30′W）、D（44°00′N，041°00′W）周边1英里海域，以及航行途中。数据由美国海岸警卫队（United States Coast Guard, USCG）于1970年9月3日至1970年10月10日期间采集，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）。完整格式说明可通过NODC官网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。绝大多数观测采用多瓶式南森采水器投放（multi-bottle Nansen casts）或其他类型水样采集器完成，仅约5%的观测数据通过电子电导率-温度-深度仪（conductivity-temperature-depth, CTD）或盐度-温度-深度记录仪（salinity-temperature-depth, STD）获取。不过，CTD/STD数据均按照与南森采水数据一致的深度层级上报至NODC，并与南森采水数据采用相同流程进行处理与存储。每个海洋站均附带航次信息（如船舶、所属国家、研究机构）、站位坐标、观测日期与时间。数据集的核心测量参数为温度与盐度，同时也可记录溶解氧、磷酸盐、总磷、硅酸盐、硝酸盐、亚硝酸盐及酸碱度（pH）等指标。观测投放时的气象状况（如气温、气压、风速风向、海浪情况）也可被记录，此外还可包含水色（福勒-于勒色度标度，Forel-Ule scale）、水体透明度（塞氏盘深度，Secchi disk depth）及海底深度等辅助数据。密度（σ-t）、声速与动力深度异常等参数由实测参数计算得到。每个海洋站既包含观测深度层级下的实测数据，也包含插值至标准深度层级集合后的数据集。