the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Effect of land-sea air masses transport on spatiotemporal distributions of atmospheric CO2 and CH4 mixing ratios over the south Yellow Sea
Jiaxin Li
Kunpeng Zang
Yi Lin
Yuanyuan Chen
Shuo Liu
Shanshan Qiu
Kai Jiang
Xuemei Qing
Haoyu Xiong
Haixiang Hong
Shuangxi Fang
Abstract. To reveal the spatiotemporal distributions of atmospheric CO2 and CH4 mixing ratios and regulation mechanisms over the China shelf sea, two field surveys were conducted in the south Yellow Sea in China in November 2012 and June 2013, respectively. Observed results showed that mean atmospheric CO2 and CH4 mixing ratios were 403.50 ± 13.70 ppm and 1934.1 ± 33.6 ppb in November 2012, and 396.40 ± 12.30 ppm and 1919.2 ± 30.2 ppb in June 2013, respectively. An improved data filtering method were established to flag diverse sources of atmospheric CO2 and CH4 in survey area. Fe found that, compared to the influences of air-sea exchange, the spatiotemporal distributions of atmospheric CO2 and CH4 mixing ratios over the south Yellow Sea were dominated by land-sea air masses transport, which was driven by seasonal monsoon. In addition, atmospheric CO2 and CH4 mixing ratios over the south Yellow Sea could be elevated remarkably in a distance of approximate 20 km offshore by land-to-sea air masses transportation from the Asia Continent during early winter monsoon.
Jiaxin Li et al.
Status: open (until 19 Jun 2023)
Jiaxin Li et al.
Jiaxin Li et al.
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