Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Shandong Provincial Key Laboratory of Ocean Environmental Monitoring Technology, Qingdao, 266100, China; Ocean Observation and Exloration Research Department, Laoshan National Laboratory, Qingdao, 266200, China.
Institute of Oceanographic Instrumentation, Qilu University of Technology (Shandong Academy of Sciences), Shandong Provincial Key Laboratory of Ocean Environmental Monitoring Technology, Qingdao, 266100, China.
Mar Environ Res. 2024 Oct;201:106699. doi: 10.1016/j.marenvres.2024.106699. Epub 2024 Aug 18.
To investigate air-sea CO flux at the Qingdao nearshore site and its temporal variations, a high-resolution continuous observation of surface carbon dioxide partial pressure (pCO) was carried out at Zhongyuan Pier near Tuandao from May 25 to July 8, 2019. It was observed that during this period, surface pCO varied between ∼490 and ∼690 μatm, mainly associated with sea surface temperature. Surface pCO also displayed substantial diurnal variations, with an average amplitude of 64 ± 21 μatm, largely dominated by biological activities. During the observational period, this site acted as a source of atmospheric CO, releasing 361 mmol CO m. The notable diurnal variations in air-sea CO flux, such as the observed average amplitude of 10.9 mmol m d in this study, pose a challenge for accurately estimating the air-sea CO flux in coastal regions without high-resolution observations.
为了研究青岛近岸海域的大气-海洋二氧化碳通量及其时间变化，本研究于 2019 年 5 月 25 日至 7 月 8 日在团岛附近的中原码头进行了高分辨率的表层二氧化碳分压（pCO）连续观测。结果表明，在此期间，表层 pCO 变化范围约为 490~690 μatm，主要与海水表面温度有关。表层 pCO 还呈现出显著的日变化，平均振幅为 64±21 μatm，主要受生物活动的影响。在观测期间，该站点成为大气 CO 的源，释放了 361 mmol CO m。显著的大气-海洋二氧化碳通量日变化，如本研究中观测到的平均振幅为 10.9 mmol m d，对在没有高分辨率观测的情况下准确估算沿海地区的大气-海洋二氧化碳通量构成了挑战。
