Objective The aim of COSIRIS is to isolate the simultaneous fluxes of photosynthesis and respiration of the terrestrial biosphere. With explicit knowledge of the component fluxes, we will: 1) test process based models of photosynthesis and respiration, 2) determine the sensitivity of each flux to environmental conditions, and 3) derive predictions of their responses to climate change. Specifically, COSIRIS aims to build a research facility to integrate a new tracer, carbonyl sulfide (COS) with CO2, water and their stable isotopes in a multi-tracer framework as a tool to separately investigate photosynthesis and respiration. In terrestrial ecosystems, CO2 is often taken up and released at the same time. Similar to CO2, COS is taken up during photosynthesis, but unlike CO2, concurrent COS emissions are small. Parallel COS and CO2 measurements thus promise to provide estimates of gross photosynthetic fluxes – impossible to measure directly at scales larger than a few leaves. The use of COS to derive CO2 fluxes has not been verified yet, but enough is known about their parallel pathways to suggest that COS, CO2 and its isotopes can be combined to yield powerful and unique constraints on gross carbon fluxes. COSIRIS will develop the expertise necessary to achieve this goal by providing: 1. an in-depth analysis of processes involved in COS uptake by vegetation, and of potentially interfering influences such as uptake by soil, 2. a novel process-based multi-tracer modelling framework of COS, CO2, water and their isotopes at the ecosystem scale, 3. extensive datasets on concurrent fluctuations of COS, CO2, water and their isotopes in ecosystems. This innovative approach promises advances in understanding and determining gross carbon fluxes at ecosystem to continental scales, particularly their variations in response to climate anomalies. Fields of science natural sciencesearth and related environmental sciencesatmospheric sciencesmeteorologybiospheranatural sciencesbiological sciencesecologyecosystemsnatural sciencesearth and related environmental sciencesatmospheric sciencesclimatologyclimatic changesnatural sciencesbiological sciencesbotany Keywords Biosphere-Atmosphere Interactions Carbonyl Sulfide Stable Isotopes Terrestrial Gross Carbon and Water Fluxes Programme(s) FP7-IDEAS-ERC - Specific programme: "Ideas" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013) Topic(s) ERC-SG-PE8 - ERC Starting Grant - Products and process engineering Call for proposal ERC-2007-StG See other projects for this call Funding Scheme ERC-SG - ERC Starting Grant Host institution UNIVERSITE PIERRE ET MARIE CURIE - PARIS 6 EU contribution € 1 822 000,00 Address Place Jussieu 4 75252 PARIS France See on map Activity type Higher or Secondary Education Establishments Principal investigator Ulrike Seibt (Dr.) Administrative Contact Ouerdia Oumohand (Ms.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data Beneficiaries (1) Sort alphabetically Sort by EU Contribution Expand all Collapse all UNIVERSITE PIERRE ET MARIE CURIE - PARIS 6 France EU contribution € 1 822 000,00 Address Place Jussieu 4 75252 PARIS See on map Activity type Higher or Secondary Education Establishments Principal investigator Ulrike Seibt (Dr.) Administrative Contact Ouerdia Oumohand (Ms.) Links Contact the organisation Opens in new window Website Opens in new window Total cost No data