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Hydrocarbon fluxes above a Scots pine forest canopy : measurements and modeling

Title data

Rinne, Janne ; Taipale, R. ; Markkanen, Tiina ; Ruuskanen, T. M. ; Hellén, H. ; Kajos, M. K. ; Vesala, Timo ; Kulmala, Markku:
Hydrocarbon fluxes above a Scots pine forest canopy : measurements and modeling.
In: Atmospheric Chemistry and Physics. Vol. 7 (June 2007) Issue 12 . - pp. 3361-3372.
ISSN 1680-7324
DOI: https://doi.org/10.5194/acp-7-3361-2007

Abstract in another language

We measured the fluxes of several hydrocarbon species above a Scots pine (Pinus sylvestris) stand using disjunct eddy covariance technique with proton transfer reaction – mass spectrometry. The measurements were conducted during four days in July at SMEAR II research station in Hyytiälä, Finland. Compounds which showed significant emission fluxes were methanol, acetaldehyde, acetone, and monoterpenes. A stochastic Lagrangian transport model with simple chemical degradation was applied to assess the sensitivity of the above canopy fluxes to chemistry. According to the model, the chemical degradation had a minor effect on the fluxes measured in this study but may have a major effect on the vertical flux profiles of more reactive compounds, such as sesquiterpenes. The monoterpene fluxes derived using M81 and M137 had a systematic difference with the latter one being higher. These fluxes followed the traditional exponential temperature dependent emission algorithm but were considerably higher than the fluxes measured before at the same site. The normalized monoterpene emission potentials at 30°C, obtained using the temperature dependence coefficient of 0.09°C−1, were 2.0 μg gdw−1 h−1 and 2.5 μg gdw−1 h−1, for fluxes derived using M81 and M137.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER52821
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors > Professorship Micrometeorology - Univ.-Prof. Dr. Thomas Foken
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Former Professors
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 11 Sep 2015 06:33
Last Modified: 08 Jul 2016 06:48
URI: https://eref.uni-bayreuth.de/id/eprint/19118