Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 4
Articles | Volume 26, issue 4
https://doi.org/10.5194/acp-26-3253-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-26-3253-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 4
Research article
 | 
03 Mar 2026
Research article |  | 03 Mar 2026

Atmospheric CO2 dynamics in a coastal megacity: spatiotemporal patterns, sea–land breeze impacts, and anthropogenic–biogenic emission partitioning

Jinwen Zhang, Yongjian Liang, Chenglei Pei, Bo Huang, Yingyan Huang, Xiufeng Lian, Shaojie Song, Chunlei Cheng, Cheng Wu, Zhen Zhou, Junjie Li, and Mei Li

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Short summary
Inadequate characterization of carbon dioxide (CO2) dynamics limits the understanding of coastal megacity carbon cycles. Using an observation-driven framework integrating high-precision CO2/CO measurements, this study shows that the "coastal CO2 dome" can shift seasonally away from the urban core, reveals nonlinear sea–land breeze effects, quantifies urban vegetation's role in CO2 budgets, thereby providing new insights into coastal carbon monitoring and mitigation assessment.
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