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Biogenic volatile compound emissions from a temperate forest, China: model simulation

Bai, Jianhui and Duhl, Tarrify and Hao, Nan (2015) Biogenic volatile compound emissions from a temperate forest, China: model simulation. Journal of Atmospheric Chemistry (10874), pp. 1-31. Springer. doi: 10.1007/s10874-015-9315-3. ISSN 0167-7764.

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Official URL: http://link.springer.com/article/10.1007%2Fs10874-015-9315-3#


Emissions of biogenic volatile organic compounds (BVOC) were measured using arelaxed eddy accumulation (REA) technique on an above-canopy tower in a temperate forest(Changbai Mountain, Jilin province, China) during the 2010 and 2011 summer seasons. Solar global radiation and photosynthetically active radiation (PAR) were also measured. Based on PAR energy dynamic balance, an empirical BVOC emission and PAR transfer model was developed that includes the processes of BVOC emissions and PAR transfer above the canopy level, including PAR absorption and consumption, and scattering by gases, liquids, and particles (GLPs). Simulated emissions of isoprene and monoterpenes were in agreement with observations. The averages of the relative estimator biases for the flux were 39.3 % for isoprene, and 27.1 % for monoterpenes in the 2010 and 2011 growing seasons, with NMSE (normalized mean square error) values of 0.133 and 0.101, respectively. The observed and simulated mean diurnal variations of isoprene and monoterpenes in the 2010 and 2011 growing seasons were evaluated for the validation of the empirical model. Under observed atmospheric conditions, the sensitivity analysis showed that emissions of isoprene and monoterpenes were more sensitive to changes in PAR than to water vapor content or to the magnitude of the scattering factor. The emissions of isoprene and monoterpenes in the 2010 and 2011 growing seasons (from June to September) were estimated using this empirical model along with hourly observational data, with mean hourly emissions of 1.71 and 1.55 mg m−2 h−1 for isoprene, and 0.48 and 0.47 mg m−2 h−1 for monoterpenes in 2010 and 2011, respectively. As formaldehyde (HCHO) is considered as the main oxidation product of isoprene and monoterpenes, it is necessary to investigate the link between HCHO and BVOC emissions. GOME-2 HCHO vertical column densities (VCDs) can be used to estimate BVOC emission fluxes in the Changbai Mountain temperate forest.

Item URL in elib:https://elib.dlr.de/101803/
Document Type:Article
Title:Biogenic volatile compound emissions from a temperate forest, China: model simulation
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:9 August 2015
Journal or Publication Title:Journal of Atmospheric Chemistry
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1007/s10874-015-9315-3
Page Range:pp. 1-31
EditorsEmailEditor's ORCID iD
Atlas, Elliot L.Rosenstiel School of Marine and Atmospheric Science, Miami, FL, USAUNSPECIFIED
Keywords:Biogenic volatile organic compounds.Isoprene.Monoterpene.Emission flux. Photosynthetically active radiation.GOME-2
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Atmospheric and climate research
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Hao, Dr. Nan
Deposited On:13 Jan 2016 09:35
Last Modified:08 Mar 2018 18:41

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