Objective The terrestrial biosphere annually absorbs around one quarter of the carbon dioxide emitted by human activities each year and thus beneficially decreases the rate of global warming. The sign and magnitude of the net land carbon dioxide flux is determined by the delicate balance between two key carbon cycle processes: gross primary productivity (photosynthetic carbon uptake by land plants) and ecosystem respiration (carbon dioxide production by all living things). The magnitude of both processes is however highly uncertain due to conceptual and methodological difficulties in disentangling the two from the (measurable) net carbon dioxide flux. This uncertainty undermines our ability to project the future of the terrestrial global carbon cycle, which in turn severely impedes the conception of realistic carbon emission reduction measures allowing constraining global warming below agreed targets. The overarching objective of the proposed project is to provide new constraints on gross primary productivity and ecosystem respiration using a dual-constraints approach. Gross primary productivity and ecosystem respiration will be estimated jointly by ecosystem-scale carbonyl sulfide eddy covariance and sun-induced fluorescence measurements at three contrasting European ecosystems. The resulting data will then be used in a unifying modelling framework allowing gross primary productivity and ecosystem respiration to be determined with much greater confidence based on the dual constraints by the experimental measurements. Fields of science social scienceseconomics and businesseconomicsproduction economicsproductivitynatural sciencesearth and related environmental sciencesatmospheric sciencesmeteorologybiospheranatural sciencesbiological sciencesecologyecosystemsnatural sciencesearth and related environmental sciencesatmospheric sciencesclimatologyclimatic changesnatural sciencesbiological sciencesbotany Keywords gross primary productivity ecosystem respiration eddy covariance proximal sensing modelling Programme(s) H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility Topic(s) MSCA-IF-2016 - Individual Fellowships Call for proposal H2020-MSCA-IF-2016 See other projects for this call Funding Scheme MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF) Coordinator UNIVERSITAET INNSBRUCK Net EU contribution € 166 156,80 Address INNRAIN 52 6020 Innsbruck Austria See on map Region Westösterreich Tirol Innsbruck Activity type Higher or Secondary Education Establishments Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Total cost € 166 156,80
