A relaxed-eddy-accumulation method for the measurement of isoprenoid canopy-fluxes using an online gas-chromatographic technique and PTR-MS simultaneously

被引：33

作者：

Graus, Martin

Hansel, Armin

Wisthaler, Armin

Lindinger, Christian

Forkel, Renate

Hauff, Karin

Klauer, Matthias

Pfichner, Andreas

Rappenglueck, Bernhard

Steigner, Dominik

Steinbrecher, Rainer

机构：

[1] Univ Houston, Dept Geosci, Houston, TX 77204 USA

[2] Univ Innsbruck, Inst Ionenphys, A-6020 Innsbruck, Austria

[3] Nestle Res Ctr, CH-1000 Lausanne, Switzerland

[4] Forschungszentrum Karlsruhe, Inst Meteorol & Climate Res, Div Atmospher Environm, Garmisch Partenkirchen, Germany

来源：

ATMOSPHERIC ENVIRONMENT | 2006年 / 40卷 / 43-54期

关键词：

biogenic volatile organic compounds (BVOC); fluxes; proton-transfer-reaction-mass spectrometry (PTR-MS); relaxed-eddy-accumulation (REA); Norway spruce;

D O I：

10.1016/j.atmosenv.2005.09.094

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

A relaxed-eddy-accumulation set-up using an online gas-chromatographic technique and proton-transfer-reaction mass spectrometry was applied to determine isoprenoid fluxes above a Norway spruce forest in July 2001/2002. The system was quality assured and its suitability for determination of canopy fluxes of isoprenoids was demonstrated. Flux measurements of oxygenated hydrocarbons failed the data quality check due to artefacts presumably arising from line and ozone-scrubber effects. Observations of turbulent fluxes of isoprenoids during the two field experiments show good agreements with primary flux data derived from enclosure measurements and modelling results using a canopy-chemistry emission model (CACHE). For monoterpenes maximum daytime fluxes of more than 2 nmol m(-2) s(-1) were observed, isoprene fluxes reached 1-1.5 nmol m(-2) s(-1). (c) 2006 Elsevier Ltd. All rights reserved.

引用

页码：S43 / S54

页数：12

共 54 条

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