Determination of the terpene flux from orange species and Norway spruce by relaxed eddy accumulation

Christensen, C. S.; Hummelshøj, P.; Jensen, N.O.; Larsen, B.; Lohse, Christian; Pilegaard, Kim; Skov, Henrik

doi:10.1016/s1352-2310(99)00502-6

Cited by 50 publications

(25 citation statements)

References 27 publications

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“…The most abundant contributions from Norway spruce emission are α-pinene and β-pinene, making up 64.8%, 60.2% and 57.3% of total emitted monoterpenes for S1019, S1017 and S1015, respectively. These results are comparable to 70% of flux contribution of α-pinene and β-pinene to total emissions during measurements made in a spruce dominated forest (Christensen et al, 2000). Other major contributions to emissions from these two types of trees came from myrcene, β-phellandrene and limonene.…”

Section: Chemical Composition Of Living Plant Emissionssupporting

confidence: 73%

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Mass yields of secondary organic aerosols from the oxidation of α-pinene and real plant emissions

et al. 2011

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Abstract. Biogenic volatile organic compounds (VOCs) are a significant source of global secondary organic aerosol (SOA); however, quantifying their aerosol forming potential remains a challenge. This study presents smog chamber laboratory work, focusing on SOA formation via oxidation of the emissions of two dominant tree species from boreal forest area, Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies), by hydroxyl radical (OH) and ozone (O 3 ). Oxidation of α-pinene was also studied as a reference system. Tetramethylethylene (TME) and 2-butanol were added to control OH and O 3 levels, thereby allowing SOA formation events to be categorized as resulting from either OHdominated or O 3 -initiated chemistry. SOA mass yields from α-pinene are consistent with previous studies while the yields from the real plant emissions are generally lower than that from α-pinene, varying from 1.9% at an aerosol mass loading of 0.69 µg m −3 to 17.7% at 26.0 µg m −3 . Mass yields from oxidation of real plant emissions are subject to the interactive effects of the molecular structures of plant emissions and their reaction chemistry with OH and O 3 , which Correspondence to: L. Q. Hao (hao.liqing@uef.fi) lead to variations in condensable product volatility. SOA formation can be reproduced with a two-product gas-phase partitioning absorption model in spite of differences in the source of oxidant species and product volatility in the real plant emission experiments. Condensable products from OH-dominated chemistry showed a higher volatility than those from O 3 -initiated systems during aerosol growth stage. Particulate phase products became less volatile via aging process which continued after input gas-phase oxidants had been completely consumed.

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Section: Chemical Composition Of Living Plant Emissionssupporting

confidence: 73%

“…Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies) were selected as the dominant tree species in the European boreal forest area (Manninen et al, 1998;Christensen et al, 2000). Both O 3 and OH were used as oxidants in the controlled conditions of these experiments.…”

Section: Q Hao Et Al: Mass Yields Of Secondary Organic Aerosolsmentioning

confidence: 99%

Mass yields of secondary organic aerosols from the oxidation of α-pinene and real plant emissions

et al. 2011

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“…The principle of REA method was originally proposed by Businger and Oncley (1990) and ever since it has been widely applied for flux measurements of trace gases and aerosol particles (e.g. Guenther et al, 1996;Pattey et al, 1999;Christensen et al, 2000;Gaman et al, 2004;Lee et al, 2005;Olofsson et al, 2005). In the REA system air samples are accumulated in two separate reservoirs during updrafts and downdrafts.…”

Section: Methodsmentioning

confidence: 99%

“…This increases the concentration difference between the two reservoirs thus decreasing the precision requirement for the chemical analysis. The dynamic deadband also forces the parameter β to become practically constant (β=0.41) and independent of turbulence intensity or atmospheric stability (Christensen et al, 2000;Ammann and Meixner, 2002;Grönholm et al, 2006 1 ). Variations in the value of the parameter β cause large uncertainty to a single measurement point.…”

Section: Methodsmentioning

confidence: 99%

Measurements of hydrocarbon emissions from a boreal fen using the REA technique

et al. 2006

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Abstract. Fluxes of biogenic volatile organic compounds (VOC) and methane were measured above a boreal fen. Vegetation on the fen is dominated by Sphagnum mosses and sedges. A relaxed eddy accumulation (REA) system with dynamic deadband was designed and constructed for the measurements. Methane, C 2 -C 6 hydrocarbons and some halogenated hydrocarbons were analysed from the samples by gas chromatographs equipped with FID and ECD. A significant flux of isoprene and methane was detected during the growing seasons. Isoprene emission was found to follow the common isoprene emission algorithm. Average standard emission potential of isoprene was 680 µg m −2 h −1 . Fluxes of other non-methane hydrocarbons were below detection limit.

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“…Monoterpenes comprise a significant portion of BVOC emissions (Guenther et al, 1995;Pio and Valente, 1998), and it is important to understand the atmospheric fates of monoterpenes and their oxidation products. The emission patterns of the various monoterpenes strongly depend on the type of vegetation and on the environmental conditions, however d-limonene makes up the majority of monoterpene emissions over orange groves, while -pinene andpinene dominate over most other kinds of forests, especially those composed of oaks and conifers (Pio and Valente, 1998;Christensen et al, 2000). In recent years, the number of relevant studies has increased substantially, necessitating the review of this topic, including emission fluxes of monoterpenes, the effects of species and nutrient limitation on emissions, secondary organic aerosol yields via condensation and nucleation.…”

Section: Introductionmentioning

confidence: 99%

Production of Secondary Organic Aerosol from Multiphase Monoterpenes

Ma¹

2012

Atmospheric Aerosols - Regional Characteristics - Chemistry and Physics

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Determination of the terpene flux from orange species and Norway spruce by relaxed eddy accumulation

Cited by 50 publications

References 27 publications

Mass yields of secondary organic aerosols from the oxidation of α-pinene and real plant emissions

Mass yields of secondary organic aerosols from the oxidation of α-pinene and real plant emissions

Measurements of hydrocarbon emissions from a boreal fen using the REA technique

Production of Secondary Organic Aerosol from Multiphase Monoterpenes

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