Are the Fenno-Scandinavian Arctic wetlands a significant regional source of formic acid?

This study presents the first gaseous formic acid (HC(O)OH) concentration measurements collected over the Fenno-Scandinavian wetlands (67.9-68.0° N, 22.1-27.8° E) as part of the MAMM (Methane and other greenhouse gases in the Arctic-Measurements, process studies and Modelling) aircraft campaigns con...

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Bibliographic Details
Published in:Atmosphere
Main Authors: Jones, Benjamin T., Muller, Jennifer, O'Shea, Sebastian, Bacak, Asan, Allen, Grant, Gallagher, Martin, Bower, Keith, Breton, Michael Le, Bannan, Thomas J., Bauguitte, Stephane, Pyle, John, Lowry, Dave, Fisher, Rebecca, France, James, Nisbet, Euan, Shallcross, Dudley, Percival, Carl
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Aircraft measurements
Arctic
CIMS
Formic acid
Soils
Wetland
Online Access:https://hdl.handle.net/1983/c298afb3-b48c-450b-a0ac-ffd6a7290bb0
https://research-information.bris.ac.uk/en/publications/c298afb3-b48c-450b-a0ac-ffd6a7290bb0
https://doi.org/10.3390/atmos8070112
https://research-information.bris.ac.uk/ws/files/123528419/Full_text_PDF_final_published_version_.pdf
Description
Summary:This study presents the first gaseous formic acid (HC(O)OH) concentration measurements collected over the Fenno-Scandinavian wetlands (67.9-68.0° N, 22.1-27.8° E) as part of the MAMM (Methane and other greenhouse gases in the Arctic-Measurements, process studies and Modelling) aircraft campaigns conducted in August and September 2013. A boundary layer box model approach has been used to calculate a regionally representative (240 km 2 ) surface flux for HC(O)OH of 0.0098 (±0.0057) mg[HCOOH].m -2 .h -1 . A surface-type classification map was used to estimate proportional source contributions to the observed HC(O)OH flux over the measurement region. The removal of expected source contributions (using available literature parameterisations) from the calculated surface flux identified that 75% remained unaccounted for. This may suggest that HC(O)OH emission from wetland within the Fenno-Scandinavian region could contribute up to 29 times higher per unit area than previous theoretical HC(O)OH globally-averaged wetland estimates, highlighting a need for further constrained wetland studies of HC(O)OH emission to better understand its potentially significant impact on the Arctic HC(O)OH budget and consequent impacts on oxidative capacity.

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