A novel CO18O dataset and modelling framework to constrain estimates of photosynthesis at the global scale
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | WINGATE, Lisa | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | LAUNOIS, Thomas | |
hal.structure.identifier | SILVA [SILVA] | |
dc.contributor.author | CUNTZ, Matthias | |
hal.structure.identifier | University of Arizona | |
dc.contributor.author | MEREDITH, Laura | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
hal.structure.identifier | Centre National de la Recherche Scientifique [CNRS] | |
dc.contributor.author | SAUZE, Joana | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | JONES, Samuel | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | WOHL, Steven | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | KAISERMANN, Aurore | |
hal.structure.identifier | Interactions Sol Plante Atmosphère [UMR ISPA] | |
dc.contributor.author | OGÉE, Jérôme | |
dc.date.accessioned | 2024-04-08T12:00:59Z | |
dc.date.available | 2024-04-08T12:00:59Z | |
dc.date.issued | 2018 | |
dc.date.conference | 2018-04-08 | |
dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/196115 | |
dc.description.abstractEn | Photosynthesis (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.iso | en | |
dc.title.en | A novel CO18O dataset and modelling framework to constrain estimates of photosynthesis at the global scale | |
dc.type | Autre communication scientifique (congrès sans actes - poster - séminaire...) | |
dc.subject.hal | Sciences du Vivant [q-bio] | |
dc.subject.hal | Sciences de l'environnement | |
bordeaux.hal.laboratories | Interactions Soil Plant Atmosphere (ISPA) - UMR 1391 | * |
bordeaux.institution | Bordeaux Sciences Agro | |
bordeaux.institution | INRAE | |
bordeaux.conference.title | EGU 2018, European Geophysical Union General Assembly 2018 | |
bordeaux.country | AT | |
bordeaux.conference.city | Vienne | |
bordeaux.peerReviewed | oui | |
hal.identifier | hal-02735152 | |
hal.version | 1 | |
hal.invited | non | |
hal.proceedings | non | |
hal.conference.end | 2018-04-13 | |
hal.popular | non | |
hal.audience | Internationale | |
hal.origin.link | https://hal.archives-ouvertes.fr//hal-02735152v1 | |
bordeaux.COinS | ctx_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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