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Airborne measurements of HC(O)OH in the European Arctic: A winter – summer comparison

Jones, Benjamin T.; Muller, Jennifer B.A.; O'Shea, Sebastian J.; Bacak, Asan; Le Breton, Michael; Bannan, Thomas J.; Leather, Kimberley E.; Booth, A. Murray; Illingworth, Sam; Bower, Keith; Gallagher, Martin W.; Allen, Grant; Shallcross, Dudley E.; Bauguitte, Stephane J.-B.; Pyle, John A.; Percival, Carl J.

Authors

Benjamin T. Jones

Jennifer B.A. Muller

Sebastian J. O'Shea

Asan Bacak

Michael Le Breton

Thomas J. Bannan

Kimberley E. Leather

A. Murray Booth

Keith Bower

Martin W. Gallagher

Grant Allen

Dudley E. Shallcross

Stephane J.-B. Bauguitte

John A. Pyle

Carl J. Percival



Abstract

This study represents the first airborne, in-situ measurements of HC(O)OH in the European Arctic, across the winter and summer seasons. HC(O)OH concentrations are under predicted at present, particularly in the mid to high northern latitudes. Data presented here probe unconfirmed sources of HC(O)OH in the Arctic, and would suggest an ocean source of HC(O)OH is more significant than proposed land sources in both winter and summer environments. A maximum concentration of 420 ppt was recorded over the ocean during the July 2012 campaign. This was more than 1.7 times greater than the maximum land concentration reported. Calculated estimates on HC(O)OH production would suggest diiodomethane photolysis could represent a significant source of HC(O)OH in marine environments in the European Arctic. Enhanced HC(O)OH concentrations observed at altitudes greater than 2 km particularly during the March campaign highlight the significance of long range transport on the European Arctic budget. In addition, two HC(O)OH vertical profiles between the altitudes 0.3–6.6 km are presented to provide a more representative vertical profile for this latitude which may be used to improve forthcoming regional and global modelling of the HC(O)OH budget.

Citation

Jones, B. T., Muller, J. B., O'Shea, S. J., Bacak, A., Le Breton, M., Bannan, T. J., Leather, K. E., Booth, A. M., Illingworth, S., Bower, K., Gallagher, M. W., Allen, G., Shallcross, D. E., Bauguitte, S. J., Pyle, J. A., & Percival, C. J. (2014). Airborne measurements of HC(O)OH in the European Arctic: A winter – summer comparison. Atmospheric Environment, 99, 556-567. https://doi.org/10.1016/j.atmosenv.2014.10.030

Journal Article Type Article
Acceptance Date Oct 15, 2014
Online Publication Date Oct 16, 2014
Publication Date 2014-12
Deposit Date Feb 15, 2021
Journal Atmospheric Environment
Print ISSN 1352-2310
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 99
Pages 556-567
DOI https://doi.org/10.1016/j.atmosenv.2014.10.030
Keywords Organic acids, Formic acid, Criegee intermediate, Diiodomethane, Arctic, CIMS
Public URL http://researchrepository.napier.ac.uk/Output/2743499