pCO2 time series measurements from the Chukchi Ecosystem Observatory CEO2 mooring deployed at 33 meters depth in the Northeast Chukchi Sea

This dataset presents a four year-long data record of the partial pressure of carbon dioxide from the Chukchi Ecosystem Observatory. These data are presented as both csv-formatted tabular files and as self-describing netCDF files. The Chukchi Ecosystem Observatory (CEO) is a set of subsurface moorings on the NE Chukchi Sea continental shelf that is annually recovered and re-deployed (Hauri et al., 2018). The mooring observatory is located on the southern flank of Hanna Shoal, 70 miles offshore, at 71.6 °N and 161.5 °W. The instruments record with high temporal resolution throughout the year, including the under-sampled and poorly understood seasons when sea ice typically inhibits ship-based sampling. The observatory records physical, nutrient and carbonate chemistry, particulate, phytoplankton, zooplankton, and fisheries data sets, thereby providing an unprecedented view into the mechanistic workings of the Chukchi shelf ecosystem. While increasing temperatures and melting sea ice act as direct stressors on the ecosystem, they also indirectly enhance ocean acidification, moving the system across potentially harmful thresholds. With these data, we hope to gain a better understanding of current state and variability of the inorganic carbon system in these remote places.

本数据集收录了楚科奇生态观测站（Chukchi Ecosystem Observatory, CEO）为期四年的二氧化碳分压观测序列。该数据集以逗号分隔值（Comma-Separated Values, CSV）格式表格文件与自描述网络通用数据格式（netCDF）文件两种形式对外提供。楚科奇生态观测站（CEO）是布设于楚科奇海东北陆架的水下锚系观测阵列，每年均会被回收并重新部署（Hauri等人，2018）。该锚系观测站位于汉纳浅滩南翼，离岸70英里，地理坐标为北纬71.6°、西经161.5°。观测仪器全年以高时间分辨率开展数据采集，覆盖了海冰通常阻碍船舶采样、因此采样不足且研究程度较低的季节。该观测站同步记录物理环境、营养盐、碳酸盐化学、颗粒物、浮游植物、浮游动物及渔业相关数据集，从而为解析楚科奇陆架生态系统的机制性运作过程提供了前所未有的研究视角。尽管海水升温与海冰消融会直接对该生态系统构成胁迫，同时也会间接加剧海洋酸化，使该生态系统越过潜在的有害阈值。藉由本数据集，我们期望能够更深入地理解这片偏远海域中无机碳系统的当前状态与变化特征。