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Trace gas exchange and gas phase chemistry in a Norway spruce forest : A study with a coupled 1-dimensional canopy atmospheric chemistry emission model

Title data

Forkel, Renate ; Klemm, Otto ; Graus, Martin ; Rappenglück, Bernhard ; Stockwell, William R. ; Grabmer, Wolfgang ; Held, Andreas ; Hansel, Armin ; Steinbrecher, Rainer:
Trace gas exchange and gas phase chemistry in a Norway spruce forest : A study with a coupled 1-dimensional canopy atmospheric chemistry emission model.
In: Atmospheric Environment. Vol. 40 (2006) Issue Suppl. 1 . - pp. 28-42.
ISSN 1352-2310
DOI: https://doi.org/10.1016/j.atmosenv.2005.11.070

Abstract in another language

Numerical modelling is an efficient tool to investigate the role of chemical degradation of biogenic volatile organiccompounds (BVOC) and the effect of dynamical processes on BVOC and product mixing ratios within and above forestcanopies. The present study shows an application of the coupled canopy-chemistry model CACHE to a Norway spruce forest at the Waldstein (Fichtelgebirge, Germany). Simulated courses of temperature, trace gas mixing ratios, and fluxes are compared with measurements taken during the BEWA2000 field campaigns. The model permits the interpretation of the observed diurnal course of ozone and VOC by investigating the role of turbulent exchange, chemical formation and degradation, emission, and deposition during the course of the day. The simulation results show that BVOC fluxes into the atmosphere are 10–15% lower than the emission fluxes on branch basis due to chemical BVOC degradation within the canopy. BVOC degradation by the NO3 radical was found to occur in the lower part of the canopy also during daytime. Furthermore, the simulations strongly indicate that further research is still necessary concerning the emission and deposition of aldehydes and ketones.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER39365
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
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Professorship Atmospheric Chemistry
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: 11 Sep 2015 06:33
URI: https://eref.uni-bayreuth.de/id/eprint/19164