WINGATE, Lisa; WEHR, Richard; COMMANE, Roisin; OGÉE, Jérôme; SAUZE, Joana; JONES, Samuel; LAUNOIS, Thomas; WOHL, Steven; WHELAN, Mary; MEREDITH, Laura; GENTY, Bernard; GIMENO CHOCARRO, Teresa; KESSELMEIER, Jurgen; BOSC, Alexandre; CUNTZ, Matthias; MUNGER, J. William; NELSON, David; SALESKA, Scott; WOFSY, Steven; ZAHNISER, Mark

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

WINGATE, Lisa
Interactions Sol Plante Atmosphère [UMR ISPA]

WEHR, Richard
University of Arizona

COMMANE, Roisin
Harvard University

Langue

Communication dans un congrès

Ce document a été publié dans

AGU Fall meeting, 2015-12-14, San Francisco. 2015p. np

Résumé en anglais

Photosynthesis (GPP), the largest CO2 flux to the land surface, is currently estimated with considerable uncertainty at between 100-175 Pg C yr-1. More robust estimates of global GPP could be obtained from the atmospheric budgets of other valuable tracers, such as carbonyl sulfide (COS) or the oxygen isotopic composition (δ18O) of atmospheric CO2. However, quantifying GPP using these tracers hinges on a better understanding of how soil micro-organisms modify the atmospheric concentrations of CO18O and COS at large scales. In particular, understanding better the role and activity of the enzyme Carbonic Anhydrase (CA) in soil micro-organisms is critical. We present novel datasets and model simulations demonstrating the progress in the collection of multi-tracer field datasets and how a new generation of multi-tracer land surface models can provide valuable constraints on photosynthesis and respiration across scales.< Réduire

Mots clés

anhydrase carbonique

isotope de l'oxygène

sulfure de carbonyle

Mots clés en anglais

carbonic anhydrase

Métadonnées

Partager cette publication !

Licence d’utilisation du document

The impact of Carbonic Anhydrase on the partitioning of leaf and soil CO18O and COS gas exchange across scales

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés

Mots clés en anglais

URI

Origine

Unités de recherche