High concentrations of reactive biogenic VOCs at a high altitude site in late autumn

Karl, T.; Fall, Ray; Crutzen, P. J.; Jordan, Alfons; Lindinger, W.

doi:10.1029/2000gl012255

Cited by 64 publications

(53 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High concentrations of GLVs have been found in the forest atmosphere in autumn when senescing and litter leaves thaw after freezing spells of weather and emit GLVs (Karl et al, 2001). Fall et al (1999) demonstrated with aspen, beech, and clover that after leaf detachment, emissions of GLVs were not dependent on light, and emissions were enhanced greatly as detached leaves dried out.…”

Section: Voc Emissions After Leaf Fallmentioning

confidence: 98%

Leaf Volatile Emissions of Betula pendula during Autumn Coloration and Leaf Fall

et al. 2010

View full text Add to dashboard Cite

Deciduous trees remobilize the nitrogen in leaves during the process of autumn coloration, thus providing a high quality food source for aphids preparing to lay over-wintering eggs. It has been suggested that aphids may use volatile organic compounds (VOCs) to: (a) select leaves where nutrient remobilization has started and induced defenses are reduced; and (b) detect the time of leaf abscission. We analyzed VOCs emitted by the foliage of Betula pendula Roth. during autumn coloration and from leaf litter just after leaf fall. We tested the hypothesis that costly, photosynthesis-related terpenes and other herbivore-induced VOCs related to attraction of aphid parasitoids and predators are reduced during the coloration process. We also investigated if the VOC emission profile of abscising leaves is different from that of early stage yellowing leaves. Enemy-luring compounds (E)-β-ocimene, linalool, and (E)-4,8-dimethyl-1,3,7-nonatriene (DMNT) were emitted only from the green foliage. Methyl salicylate (MeSa), known to recruit predatory bugs and attract migrant aphids, was emitted until the first stage of color change. Cis-3-hexenol, an indicator of cellular disintegration, became dominant in the emissions from abscising leaves and from fresh leaf litter. We discuss the ecological significance of the observed changes in birch leaf VOC profiles during the process of autumn senescence.

show abstract

Section: Voc Emissions After Leaf Fallmentioning

confidence: 98%

Leaf Volatile Emissions of Betula pendula during Autumn Coloration and Leaf Fall

et al. 2010

View full text Add to dashboard Cite

show abstract

“…Several other species also have been reported to be detected at mass 69, such as methyl butanal, ethyl vinyl alcohol, and furan (Christian et al, 2004;Karl et al, 2001). However, isoprene was often found as the dominant species at mass 69 within various kinds of air masses .…”

Section: Mass 69mentioning

confidence: 99%

Measurements of Volatile Organic Compounds Using Proton Transfer Reaction – Mass Spectrometry during the MILAGRO 2006 Campaign

et al. 2009

View full text Add to dashboard Cite

Abstract. Volatile organic compounds (VOCs) were measured by proton transfer reaction -mass spectrometry (PTR-MS) on a rooftop in the urban mixed residential and industrial area North Northeast of downtown Mexico City as part of the Megacity Initiative -Local and Global Research Observations (MILAGRO) 2006 field campaign. Thirty eight individual masses were monitored during the campaign and many species were quantified including methanol, acetaldehyde, toluene, the sum of C 2 benzenes, the sum of C 3 benzenes, acetone, isoprene, benzene, and ethyl acetate. The VOC measurements were analyzed to gain a better understanding of the type of VOCs present in the MCMA, their diurnal patterns, and their origins. Diurnal profiles of weekday and weekend/holiday aromatic VOC concentrations showed the influence of vehicular traffic during the morning rush hours and during the afternoon hours. Plumes including elevated toluene as high as 216 parts per billion (ppb) and ethyl acetate as high as 183 ppb were frequently observed during the late night and early morning hours, indicating the possibility of significant industrial sources of the two compounds in the region. Wind fields during those peak episodes revealed no specific direction for the majority of the toluene plumes but the ethyl acetate plumes arrived at the site when winds were from the Southwest or West. The PTR-MS measurements combined with other VOC measuring techniquesCorrespondence to: R. Zhang (zhang@ariel.met.tamu.edu) at the field site as well as VOC measurements conducted in other areas of the Mexico City Metropolitan Area (MCMA) will help to develop a better understanding of the spatial pattern of VOCs and its variability in the MCMA.

show abstract

“…(Kirstine and Galbally, 2004;Olofsson et al, 2003). Local weather conditions can also result in the release of GLVs; high concentrations of GLVs (up to 5 ppbv) were seen in the Alps after a freezing spell, and were attributed to emission from damaged cells upon thawing (Karl et al, 2001). The recent study of Joutsensaari et al (2005) indicated that these types of stress induced emissions from plants can form increased levels of SOA over healthy plants and are likely to be important aerosol precursors.…”

Section: Introductionmentioning

confidence: 99%

Reactive oxidation products promote secondary organic aerosol formation from green leaf volatiles

et al. 2009

View full text Add to dashboard Cite

Abstract. Green leaf volatiles (GLVs) are an important group of chemicals released by vegetation which have emission fluxes that can be significantly increased when plants are damaged or stressed. A series of simulation chamber experiments has been conducted at the European Photoreactor in Valencia, Spain, to investigate secondary organic aerosol (SOA) formation from the atmospheric oxidation of the major GLVs cis-3-hexenylacetate and cis-3-hexen-1-ol. Liquid chromatography-ion trap mass spectrometry was used to identify chemical species present in the SOA. Cis-3-hexen-1-ol proved to be a more efficient SOA precursor due to the high reactivity of its first generation oxidation product, 3-hydroxypropanal, which can hydrate and undergo further reactions with other aldehydes resulting in SOA dominated by higher molecular weight oligomers. The lower SOA yields produced from cis-3-hexenylacetate are attributed to the acetate functionality, which inhibits oligomer formation in the particle phase. Based on observed SOA yields and best estimates of global emissions, these compounds may be calculated to be a substantial unidentified global source of SOA, contributing 1-5 TgC yr −1 , equivalent to around a third of that predicted from isoprene. Molecular characterization of the SOA, combined with organic mechanistic information, has provided evidence that the formation of organic aerosols from GLVs is closely related to the reactivity of their first generation atmospheric oxidation products, and indicates that this may be a simple parameter that could be used in assessing the aerosol formation potential for other unstudied organic compounds in the atmosphere.

show abstract

High concentrations of reactive biogenic VOCs at a high altitude site in late autumn

Cited by 64 publications

References 17 publications

Leaf Volatile Emissions of Betula pendula during Autumn Coloration and Leaf Fall

Leaf Volatile Emissions of Betula pendula during Autumn Coloration and Leaf Fall

Measurements of Volatile Organic Compounds Using Proton Transfer Reaction – Mass Spectrometry during the MILAGRO 2006 Campaign

Reactive oxidation products promote secondary organic aerosol formation from green leaf volatiles

Contact Info

Product

Resources

About