Atmospheric Chemistry and Physics BVOC ecosystem flux measurements at a high latitude wetland site

Abstract. In this study, we present summertime concen-trations and fluxes of biogenic volatile organic compounds (BVOCs) measured at a sub-arctic wetland in northern Swe-den using a disjunct eddy-covariance (DEC) technique based on a proton transfer reaction mass spectrometer (PTR-MS). The vegetatio...

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Bibliographic Details
Main Authors: T. Holst, A. Arneth, S. Hayward, A. Ekberg, M. Mastepanov, M. Jackowicz-korczynski, T. Friborg, P. M. Crill
Other Authors: The Pennsylvania State University CiteSeerX Archives
Format: Text
Language:English
Published: 2010
Subjects:
Arctic
Eriophorum
Online Access:http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.644.5641
http://www.atmos-chem-phys.net/10/1617/2010/acp-10-1617-2010.pdf
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Summary:Abstract. In this study, we present summertime concen-trations and fluxes of biogenic volatile organic compounds (BVOCs) measured at a sub-arctic wetland in northern Swe-den using a disjunct eddy-covariance (DEC) technique based on a proton transfer reaction mass spectrometer (PTR-MS). The vegetation at the site was dominated by Sphagnum, Carex and Eriophorum spp. The measurements reported here cover a period of 50 days (1 August to 19 September 2006), approximately one half of the growing season at the site, and allowed to investigate the effect of day-to-day vari-ation in weather as well as of vegetation senescence on daily BVOC fluxes, and on their temperature and light responses. The sensitivity drift of the DEC system was assessed by comparing H3O+-ion cluster formed with water molecules (H3O+(H2O) at m37) with water vapour concentration mea-

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