Articles | Volume 18, issue 5
Atmos. Chem. Phys., 18, 3335–3362, 2018
https://doi.org/10.5194/acp-18-3335-2018
Atmos. Chem. Phys., 18, 3335–3362, 2018
https://doi.org/10.5194/acp-18-3335-2018

Research article 07 Mar 2018

Research article | 07 Mar 2018

Diurnal, synoptic and seasonal variability of atmospheric CO2 in the Paris megacity area

Irène Xueref-Remy et al.

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Short summary
Urbanized and industrialized areas are the largest source of fossil CO2. This work analyses the atmospheric CO2 variability observed from the first in situ network deployed in the Paris megacity area. Gradients of several ppm are found between the rural, peri-urban and urban sites at the diurnal to the seasonal scales. Wind direction and speed as well as boundary layer dynamics, correlated to highly variable urban emissions, are shown to be key regulator factors of the observed CO2 records.
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