Atmos. Chem. Phys. Discuss., 8, 2337-2357, 2008
www.atmos-chem-phys-discuss.net/8/2337/2008/
doi:10.5194/acpd-8-2337-2008
© Author(s) 2008. This work is distributed
under the Creative Commons Attribution 3.0 License.
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This discussion paper has been under review for the journal Atmospheric Chemistry and Physics (ACP). Please refer to the corresponding final paper in ACP.
Measurement and interpretation of gas phase formaldehyde concentrations obtained during the CHABLIS campaign in coastal Antarctica
R. A. Salmon1, S. J.-B. Bauguitte1, W. Bloss2, M. A. Hutterli1, A. E. Jones1, K. Read3, and E. W. Wolff1
1British Antarctic Survey, High Cross, Madingley Road, Cambridge, CB3 0ET, UK
2School of Geography, Earth & Environmental Sciences, University of Birmingham Edgbaston, Birmingham, B15 2TT, UK
3Department of Chemistry, University of York, Heslington, York YO19 4RR, UK

Abstract. Gas phase formaldehyde concentrations were measured during the 2004-5 CHABLIS campaign at Halley research station, Antarctica. Data coverage span from March 2004 through to January 2005 thus capturing the majority of the year. Factors controlling HCHO concentration include local chemical sources and sinks, and exchange with the snow surface. The measured seasonality is in line with previous observations from Neumayer station, with maximum in summer and minimum during the winter months, but with lower absolute concentrations throughout the year. Steady state calculations show oxidation of methane to be the overwhelming source of formaldehyde during the summer, with destruction dominated by photolysis and reaction with Br atoms.

Citation: Salmon, R. A., Bauguitte, S. J.-B., Bloss, W., Hutterli, M. A., Jones, A. E., Read, K., and Wolff, E. W.: Measurement and interpretation of gas phase formaldehyde concentrations obtained during the CHABLIS campaign in coastal Antarctica, Atmos. Chem. Phys. Discuss., 8, 2337-2357, doi:10.5194/acpd-8-2337-2008, 2008.
 
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