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Modeling Intra- and Interannual Variability of BVOC Emissions From Maize, Oil-Seed Rape, and Ryegrass
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SYSNO ASEP 0556660 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Modeling Intra- and Interannual Variability of BVOC Emissions From Maize, Oil-Seed Rape, and Ryegrass Author(s) Havermann, F. (DE)
Ghirardo, A. (DE)
Schnitzler, J. (DE)
Nendel, Claas (UEK-B) ORCID, RID, SAI
Hoffmann, M. (DE)
Kraus, D. (DE)
Grote, R. (DE)Number of authors 7 Article number e2021MS002683 Source Title Journal of Advances in Modeling Earth Systems. - : Wiley
Roč. 14, č. 3 (2022)Number of pages 22 s. Language eng - English Country US - United States Keywords volatile organic-compounds ; biogenic voc emissions ; rotation coppice willow ; air-quality impacts ; compound emissions ; temperature response ; isoprene emissions ; biochemical-model ; megan model ; photosynthesis ; biogenic volatile organic compounds ; process-based modeling ; Zea mays ; Brassica napus ; Lolium multiflorum ; plant ontogenetic stage Subject RIV DG - Athmosphere Sciences, Meteorology OECD category Meteorology and atmospheric sciences Method of publishing Open access Institutional support UEK-B - RVO:86652079 UT WOS 000776466100005 EID SCOPUS 85127250991 DOI 10.1029/2021MS002683 Annotation Air chemistry is affected by the emission of biogenic volatile organic compounds (BVOCs), which originate from almost all plants in varying qualities and quantities. They also vary widely among different crops, an aspect that has been largely neglected in emission inventories. In particular, bioenergy-related species can emit mixtures of highly reactive compounds that have received little attention so far. For such species, long-term field observations of BVOC exchange from relevant crops covering different phenological phases are scarcely available. Therefore, we measured and modeled the emission of three prominent European bioenergy crops (maize, ryegrass, and oil-seed rape) for full rotations in north-eastern Germany. Using a proton transfer reaction-mass spectrometer combined with automatically moving large canopy chambers, we were able to quantify the characteristic seasonal BVOC flux dynamics of each crop species. The measured BVOC fluxes were used to parameterize and evaluate the BVOC emission module (JJv) of the physiology-oriented LandscapeDNDC model, which was enhanced to cover de novo emissions as well as those from plant storage pools. Parameters are defined for each compound individually. The model is used for simulating total compound-specific reactivity over several years and also to evaluate the importance of these emissions for air chemistry. We can demonstrate substantial differences between the investigated crops with oil-seed rape having 37-fold higher total annual emissions than maize. However, due to a higher chemical reactivity of the emitted blend in maize, potential impacts on atmospheric OH-chemistry are only 6-fold higher. Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2023 Electronic address https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021MS002683
Number of the records: 1