Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 19, issue 8
Articles | Volume 19, issue 8
https://doi.org/10.5194/amt-19-2837-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/amt-19-2837-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 19, issue 8
Research article
 | 
28 Apr 2026
Research article |  | 28 Apr 2026

Deployment and evaluation of a low-cost sensor system for atmospheric CO2 monitoring on a sea–air interface buoy

Jialu Liu, Pengfei Han, Huiling Ouyang, Ning Zeng, Zhenfeng Wang, Jian Wang, Weiwei Fu, Honggang Lv, Wenhao Lin, Zheng Xia, and Bo Yao

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Short summary
This study deployed a buoy equipped with three low-cost sensors in the northern South China Sea to continuously monitor atmospheric CO2 at the sea surface. After correcting for environmental factors and sensor drift, the measurement accuracy improved. CO2 levels were generally stable with small daily changes, while local fluctuations reflected air from land. This affordable approach enables reliable ocean CO2 monitoring and helps study the ocean’s role in the global carbon cycle.
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Special issue
Greenhouse gas monitoring in the Asia–Pacific region...