Atmospheric Chemistry and Physics
Atmospheric Chemistry and Physics
ACP
Articles | Volume 26, issue 14
Articles | Volume 26, issue 14
https://doi.org/10.5194/acp-26-10477-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-26-10477-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 14
Research article
 | 
27 Jul 2026
Research article |  | 27 Jul 2026

Exploring atmospheric CH4 monitoring network expansion in Italy using inverse modelling

Joël Thanwerdas, Paolo Cristofanelli, Angela Fiore, Rianne Dröge, Sophie Van Mil, Yohanna Villalobos, Zhendong Wu, and Dominik Brunner

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Short summary
We assess how expanding Italy’s sparse ICOS (Integrated Carbon Observation System) methane network could improve methane emission estimates. Using transport modelling, data assimilation methods and synthetic observations, we test eight candidate sites. Chieti, in Central Italy and Mount Venda, in Northern Italy, provide the strongest added constraints, respectively. The framework developed here can be applied to other countries to optimize their atmospheric measurement networks and to improve constraints on greenhouse gas emissions.
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