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: Benjamin T. Jones, Jennifer Muller, Sebastian O’Shea, Asan Bacak, Grant Allen, Martin Gallagher, Keith Bower, Michael Le Breton, Thomas J. Bannan, Stephane Bauguitte, John Pyle, Dave Lowry, Rebecca Fisher, James France, Euan Nisbet, Dudley Shallcross, Carl Percival
Format: Article in Journal/Newspaper
Language:English
Published: MDPI AG 2017
Subjects:
formic acid
CIMS
aircraft measurements
Arctic
wetland
soils
Meteorology. Climatology
QC851-999
Online Access:https://doi.org/10.3390/atmos8070112
https://doaj.org/article/ef797099951442bc88e2b125ca11c99e
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 km2) 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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