Measurement and interpretation of gas phase formaldehyde concentrations obtained during the CHABLIS campaign in coastal Antarctica

International audience 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 loc...

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Bibliographic Details
Main Authors: Salmon, R. A., Bauguitte, S. J.-B., Bloss, W., Hutterli, M. A., Jones, A. E., Read, K., Wolff, E. W.
Other Authors: British Antarctic Survey (BAS), Natural Environment Research Council (NERC), School of Geography, Earth & Environmental Sciences, Department of Chemistry York, UK, University of York York, UK
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 2008
Subjects:
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
Halley Research Station
Neumayer
Neumayer Station
Antarc*
Antarctica
Online Access:https://hal.science/hal-00303289
https://hal.science/hal-00303289/document
https://hal.science/hal-00303289/file/acpd-8-2337-2008.pdf
Description
Summary:International audience 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.

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