Total dissolved gas pressure (TDGP) and O2/N2 (Oxygen/Nitrogen) data collected on a research cruise on the vessel Ocean Starr, Bering, Chukchi, and Beaufort Seas, Arctic Ocean, 2019.

Data were collected between August 1, 2019 and August 24, 2019 using a commercially available gas tension device (GTD) made by Pro-Oceanus (miniTDGP) connected to the surface uncontaminated seawater supply (which had a nominal intake depth of 3.5 meters) of Ocean Starr on leg 1 of Cruise identifier (ID) OS1901. Data were collected near-continuously over the cruise track which departed from Dutch Harbor, Alaska (AK) and sampled waters of the Bering and Chukchi Sea, ending in Nome, AK. The objective of Arctic IES is to understand how reductions in Arctic sea ice and the associated changes in the physical environment influence the flow of energy through the ecosystems of the Chukchi and Beaufort seas. Two research expeditions in the Beaufort and Chukchi seas during late summer and early fall 2017 and 2019 were designed to address this objective. This survey takes measurements of the: 1) physical environment (temperature, salinity, nutrients); 2) seasonal composition, distribution and production of phytoplankton (plants); 3) distribution and standing stocks of zooplankton (bird, whale, and fish food); 4) assemblages, distributions, abundances, size, diet, and fitness of larval, early juvenile, and adult fishes; and 5) distribution and relative abundances of seabirds and marine mammals. The measurements here contribute to characterizing both the chemical environment and the rate of net biological oxygen production.本研究数据采集于2019年8月1日至2019年8月24日期间，采用Pro-Oceanus公司生产的商用气体张力装置（Gas Tension Device, GTD，miniTDGP），连接至Ocean Starr号船舶的表层未受污染海水供应系统——该系统标称取水深度为3.5米，对应航次标识（ID）OS1901的第一航段。数据在整个航迹上近乎连续采集，航次从阿拉斯加州荷兰港（AK）出发，对白令海与楚科奇海海域开展采样，最终停靠于阿拉斯加州诺姆港。北极综合生态系统研究（Arctic Integrated Ecosystem Study, IES）旨在阐明北极海冰减少及其伴随的物理环境变化，如何通过楚科奇海与波弗特海的生态系统影响能量流动。为此，研究团队分别于2017年夏末秋初、2019年夏末秋初在波弗特海与楚科奇海开展了两次科考航次。本次调查涵盖以下5类测量指标：1）物理环境参数（温度、盐度、营养盐）；2）浮游植物（植物类群）的季节组成、分布与生产力；3）浮游动物（鸟类、鲸类与鱼类的饵料）的分布与现存量；4）仔鱼、早期稚鱼及成鱼的类群组成、分布、丰度、体型、食性与健康状况；5）海鸟与海洋哺乳动物的分布及相对丰度。本次采集的数据可为表征化学环境以及净生物产氧速率提供支撑。