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A novel CO18O dataset and modelling framework to constrain estimates of photosynthesis at the global scale

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWINGATE, Lisa
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorLAUNOIS, Thomas
hal.structure.identifierSILVA [SILVA]
dc.contributor.authorCUNTZ, Matthias
hal.structure.identifierUniversity of Arizona
dc.contributor.authorMEREDITH, Laura
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierCentre National de la Recherche Scientifique [CNRS]
dc.contributor.authorSAUZE, Joana
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorJONES, Samuel
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorWOHL, Steven
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorKAISERMANN, Aurore
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorOGÉE, Jérôme
dc.date.accessioned2024-04-08T12:00:59Z
dc.date.available2024-04-08T12:00:59Z
dc.date.issued2018
dc.date.conference2018-04-08
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196115
dc.description.abstractEnPhotosynthesis (GPP), the largest CO 2 flux from the land surface, is currently estimated with considerable un- certainty. More robust estimates of global GPP could be obtained from the atmospheric budgets of other tracers such as, the oxygen isotopic composition ( δ 18 O) of atmospheric CO 2 or carbonyl sulphide (COS). However, es- timating GPP using these tracers hinges on a better understanding of how soil microbes modify the atmospheric concentrations of CO 18 O and COS at large scales. In particular, understanding better the role and activity of the enzyme Carbonic Anhydrase (CA) in soil microbes is a critical factor underpinning the successful implementation of these tracers in global scale models. We addressed this knowledge gap by measuring the exchange of CO 18 O between soil microcosms and the atmosphere from sites covering a range of biomes. This novel dataset has led to the development of a new mechanistic framework that can be easily implemented in multi-tracer Earth system models to predict variations in soil CA activity across the terrestrial land surface. Using this multi-tracer approach we provide independent estimates of global GPP constrained by the atmospheric budgets of CO 2 and CO 18 O.
dc.language.isoen
dc.title.enA novel CO18O dataset and modelling framework to constrain estimates of photosynthesis at the global scale
dc.typeAutre communication scientifique (congrès sans actes - poster - séminaire...)
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences de l'environnement
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.conference.titleEGU 2018, European Geophysical Union General Assembly 2018
bordeaux.countryAT
bordeaux.conference.cityVienne
bordeaux.peerReviewedoui
hal.identifierhal-02735152
hal.version1
hal.invitednon
hal.proceedingsnon
hal.conference.end2018-04-13
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02735152v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2018&rft.au=WINGATE,%20Lisa&LAUNOIS,%20Thomas&CUNTZ,%20Matthias&MEREDITH,%20Laura&SAUZE,%20Joana&rft.genre=conference


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