Water temperature, salinity, nutrient samples, and other data taken by CTD and Niskin bottles from the fishing vessel Aquila, cruise AQ16-01, in the Bering, Chukchi, and Beaufort Seas from 2016-09-04 to 2016-09-29 (NCEI Accession 0281203)

This CTD and Niskin bottles data set, consisting of 71 casts, was collected in the Chukchi Sea from the F/V Aquila (AQ16-01, September 4 - 29, 2016) within the Arctic Long-Term Integrated Mooring Array (ALTIMA) area. The cruise was funded by NOAA’s Office of Oceanic and Atmospheric Research (OAR), with supplemental funding from the Bureau of Ocean Energy Management (BOEM) through the Arctic Whale Ecology Study (ARCWEST). These data add to long-term datasets begun under several BOEM initiatives (see “Purpose”). CTD operations on this cruise were managed by EcoFOCI personnel from NOAA/PMEL. Profile data from CTD instruments were processed at NOAA/PMEL/EcoFOCI using standard techniques. Data from bottle samples include phosphate, silicate, nitrate, nitrite and ammonium. Profile data are averaged to a 1-meter grid, with missing data listed as NaN. Salinity was calculated (PSS-78), from conductivity and temperature (ITS90). Sigma-t was calculated from primary temperature and salinity.

Nutrient samples were analyzed according to the methods of Gordon et al, 1993 and Mantoura, Woodward, 1983 (see references below). Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis, and some frozen for later analysis.

CTD data contact: Phyllis Stabeno, Peggy Sullivan, Shaun Bell, Calvin Mordy (nutrients).

This cruise was conducted by NOAA/OAR, NMML, AFSC, BOEM, PMEL and EcoFOCI participants. Data are in CSV format. Longitudes are in deg_west.

本数据集包含温盐深仪（Conductivity Temperature Depth, CTD）与尼斯金采水器（Niskin bottles）的观测数据，共计71个站位剖面，于2016年9月4日至29日由“阿奎拉号”作业渔船（F/V Aquila，航次编号AQ16-01）在楚科奇海的北极长期集成锚定阵列（Arctic Long-Term Integrated Mooring Array, ALTIMA）作业区内采集。本航次由美国国家海洋和大气管理局（NOAA）下属的海洋与大气研究办公室（OAR）资助，海洋能源管理局（BOEM）通过北极鲸类生态研究项目（ARCWEST）提供补充经费。本数据集补充了BOEM此前多项倡议下建立的长期观测数据集，详见“研究目的”部分。本航次的CTD作业由NOAA/PMEL的EcoFOCI团队人员负责管理。CTD仪器获取的剖面数据由NOAA/PMEL/EcoFOCI采用标准技术流程完成处理。采水器样本的检测指标包括磷酸盐、硅酸盐、硝酸盐、亚硝酸盐与铵盐。所有剖面数据已网格化至1米分辨率，缺失数据以NaN标注。盐度依据PSS-78标准，由电导率与采用ITS-90温标测定的温度计算得到；密度距平（Sigma-t）则由实测温度与盐度计算得出。
营养盐样本的分析参考了Gordon等人1993年以及Mantoura与Woodward 1983年的实验方法（详见文末参考文献）。样本采集使用50毫升高密度聚乙烯瓶，每个站位采样前需先用10%盐酸冲洗瓶体，再用待采集水样至少冲洗三次后方可装样。部分样本在分析前经3至12小时冷藏保存，另有部分样本经冷冻储存以备后续分析。
CTD数据联系人：Phyllis Stabeno、Peggy Sullivan、Shaun Bell、Calvin Mordy（负责营养盐数据）。
本航次由NOAA/OAR、NMML、AFSC、BOEM、PMEL及EcoFOCI的科研人员共同完成。数据集采用CSV格式存储，经度单位为西经度数（deg_west）。