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Ozone production in a maritime pine forest in water-stressed conditions

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorKAMMER, Julien
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorLAMAUD, Eric
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorBONNEFOND, Jean-Marc
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorGARRIGOU, Didier
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorFLAUD, P.-M.
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorPERRAUDIN, E.
hal.structure.identifierEnvironnements et Paléoenvironnements OCéaniques [EPOC]
dc.contributor.authorVILLENAVE, E.
dc.date.accessioned2024-04-08T12:06:29Z
dc.date.available2024-04-08T12:06:29Z
dc.date.issued2019
dc.identifier.issn1352-2310
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196406
dc.description.abstractEnDuring two growing seasons of a maritime pine stand, in 2014 and 2015, ozone (O-3) fluxes have been determined using the eddy covariance (EC) method and compared to the outputs of a big-leaf O-3 deposition model including stomatal, cuticular and soil pathways. The model developed in this study generally allowed to properly reproduce the measured ozone deposition. Ozone fluxes showed a strong reduction during two water stressed periods in September 2014 and July 2015. The model partly explain this fall due to the reduction of stomatal deposition. Despite this stomatal closure, measured O-3 fluxes presented systematically lower negative values than the model outputs, and sometimes even positive values around midday during periods marked by strong water stress. In other words, the difference between observed and modelled O-3 fluxes (hereinafter referred to as the residual O-3 flux) is systematically positive on daytime during these water-stressed periods. This positive residual flux traduced the existence of an O-3 source below the flux measurement level, responsible for positive fluxes that counterbalance deposition fluxes. We developed an O-3 production module based on a terpene emission algorithm and an OH concentration proxy, to try to explain the observed ozone production. As this parametrisation allowed us to reproduce well the daily and inter-daily dynamics of the residual O-3 flux, it confirms that the latter actually resulted from O-3 production processes. This ozone production is here highlighted for the first time using O-3 fluxes measurements by the EC method. The chemical reactions possibly involved in O-3 production processes in this maritime pine forest have been discussed and different mechanisms are proposed, based on peroxy radicals chemistry or stress-induced BVOCs.
dc.language.isoen
dc.publisherElsevier
dc.subject.enozone production
dc.subject.enmaritime pine
dc.subject.enozone fluxes
dc.subject.eneddy covariance
dc.title.enOzone production in a maritime pine forest in water-stressed conditions
dc.typeArticle de revue
dc.identifier.doi10.1016/j.atmosenv.2018.10.021
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.journalAtmospheric Environment
bordeaux.page131-140
bordeaux.volume197
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02620121
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02620121v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Atmospheric%20Environment&rft.date=2019&rft.volume=197&rft.spage=131-140&rft.epage=131-140&rft.eissn=1352-2310&rft.issn=1352-2310&rft.au=KAMMER,%20Julien&LAMAUD,%20Eric&BONNEFOND,%20Jean-Marc&GARRIGOU,%20Didier&FLAUD,%20P.-M.&rft.genre=article


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