根据 2022 年夏季观测数据得出的北冰洋冰覆盖区域 pCO2 变化情况

IF 5.1 2区 地球科学 Q1 LIMNOLOGY
Ahra Mo, Keyhong Park, Tae-Wook Kim, Doshik Hahm, Jung-Ok Choi, Sohyeon Geum, Jinyoung Jung, Eun Jin Yang
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引用次数: 0

摘要

要加深对北冰洋碳循环的了解,全面的观测数据至关重要,其中包括冰水下层的测量数据。本研究提出了一种利用测量的溶解无机碳和总碱度校准 pCO2 传感器的实用方法。我们的研究结果提出了校准所需的最少瓶样数量,以确保 1%的精度。此外,我们还确定了光合作用导致的溶解无机碳减少以及海冰释放过量碱度导致的海水缓冲能力增加在调节 pCO2 方面的重要作用。楚科奇海南部、楚科奇海北部和东西伯利亚海北部的平均海气二氧化碳通量分别为-48.9 ± 44.6、-7.3 ± 14.6和-1.4 ± 2.8 mmol m-2 d-1。我们发现,在北极海冰区,通量与海冰浓度之间存在很强的负相关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

pCO2 variation in ice-covered regions of the Arctic Ocean from the summer 2022 observation

pCO2 variation in ice-covered regions of the Arctic Ocean from the summer 2022 observation

To enhance our understanding of the carbon cycle in the Arctic Ocean, comprehensive observational data are crucial, including measurements from the underlying ice water. This study proposed a practical method for calibrating pCO2 sensor using measured dissolved inorganic carbon and total alkalinity. Our findings suggested the minimum number of bottle samples needed for calibration to ensure 1% accuracy. Additionally, we identified the significant role of a decrease in dissolved inorganic carbon due to photosynthesis and the increase in buffer capacity of the seawater from the release of excess alkalinity by sea ice in regulating pCO2. The mean air–sea CO2 fluxes were −48.9 ± 44.6, −7.3 ± 14.6, and −1.4 ± 2.8 mmol m−2 d−1 in the southern Chukchi Sea, northern Chukchi Sea, and northern East Siberian Sea, respectively. We found a robust negative correlation between the flux and sea ice concentration in the Arctic Sea ice regions.

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来源期刊
CiteScore
10.00
自引率
3.80%
发文量
63
审稿时长
25 weeks
期刊介绍: Limnology and Oceanography Letters (LO-Letters) serves as a platform for communicating the latest innovative and trend-setting research in the aquatic sciences. Manuscripts submitted to LO-Letters are expected to present high-impact, cutting-edge results, discoveries, or conceptual developments across all areas of limnology and oceanography, including their integration. Selection criteria for manuscripts include their broad relevance to the field, strong empirical and conceptual foundations, succinct and elegant conclusions, and potential to advance knowledge in aquatic sciences.
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