Articles | Volume 15, issue 3
Atmos. Chem. Phys., 15, 1289–1298, 2015
https://doi.org/10.5194/acp-15-1289-2015

Special issue: The Pan European Gas-Aerosols Climate Interaction Study...

Atmos. Chem. Phys., 15, 1289–1298, 2015
https://doi.org/10.5194/acp-15-1289-2015
Research article
06 Feb 2015
Research article | 06 Feb 2015

Evidence for an unidentified non-photochemical ground-level source of formaldehyde in the Po Valley with potential implications for ozone production

J. Kaiser et al.

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Short summary
Using measurements acquired from a Zeppelin airship during the PEGASOS 2012 campaign, we show that VOC oxidation alone cannot account for the formaldehyde concentrations observed in the morning over rural Italy. Vertical profiles suggest a ground-level source of HCHO. Incorporating this additional HCHO source into a photochemical model increases calculated O3 production by as much as 12%.
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