1 / 11

= Fusion of themes 3 and 4 of RTRA proposal

GIS " Climat-Environnement-Société " Sur le changement climatique et ses impacts sur la société. Changement climatique, écosystèmes, utilisation des sols et ressources en eau. = Fusion of themes 3 and 4 of RTRA proposal

cecile
Download Presentation

= Fusion of themes 3 and 4 of RTRA proposal

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GIS " Climat-Environnement-Société " Sur le changement climatique et ses impacts sur la société Changement climatique, écosystèmes, utilisation des sols et ressources en eau = Fusion of themes 3 and 4 of RTRA proposal Authors: N. de Noblet (LSCE), A. Ducharne (Sisyphe), B. Sultan (LOCEAN), C. Ottlé (LSCE), P. Leadley (ESE), N. Viovy (LSCE), L. Abaddie (Bioemco). Additional laboratories involved: CETP, CIRED, IDES, LMD, LISA Strong interactions with INRA Grignon

  2. Climate & Atmosphere (CO2, H2O, N2O, CH4, etc) Intensive agriculture Extensive agriculture Wetlands & freshwater systems Forests = effects of ecosystem function on climate & atmosphere = impact of climate & atmospheric change on ecosystems

  3. Climate & Atmosphere (CO2, H2O, N2O, CH4, etc) Intensive agriculture Extensive agriculture Wetlands & freshwater systems Forests Water Table = effects of ecosystem function on climate & atmosphere = effects of ecosystem function on water flow & water quality = impact of climate & atmospheric change on ecosystems

  4. Climate & Atmosphere (CO2, H2O, N2O, CH4, etc) Intensive agriculture Extensive agriculture Wetlands & freshwater systems Forests Water Table = effects of ecosystem function on climate & atmosphere = effects of ecosystem function on water flow & water quality = impact of climate & atmospheric change on ecosystems = land use change

  5. Integrating Activities • Climate interactions with biogeochemical cycles and plant productivity: soils, crops, trees - Luc Abaddie (soils) • Climate change and water resources - Agnès Ducharne • Land use change: interactions with climate and socio-economic drivers - Nathalie de Noblet & Philippe Ciais • Impacts of extreme events on natural and cultivated ecosystems • Global change and biodiversity • etc…

  6. Goals - enhance collaboration between Paris region laboratories and increase their international visibility by: • Integrating experiments, observations and models, • Linking global, regional and local scales = observe and predict global scale patterns and processes based on a sound understanding of underlying mechanisms, • Crossing disciplinary and laboratory boundaries, • Providing input to and leadership in international scientific programs; e.g., GCP, iLEAPS, GLP, DIVERSITAS, • etc…

  7. Dynamic Global Vegetation Model (DGVM) predictions for 2100 = CO2 only = CO2 + climate Predictions in the IPCC third assessment report 2003 Science 302:1512-1513

  8. EXPERIMENTS OBSERVATION MODELS IMAGINE: Effects of elevated CO2, temperature and precipitation on grasslands. Soil gas fluxes SOMCO (Bioemco) - Soil C and N dynamics Plant photosynthesis and respiration CASTANEA (ESE) - Forest ecosystem model Eddy flux towers: esp. CO2, H2O, NOx & N2O STICS (INRA Grignon) - Crop ecosystem model Collaboration with INRA Clermont-Ferrand & Lyon PASIM (LSCE / INRA Clermont) - Pasture model ECOTRON at Foljuif: a tool for studying biodiversity & ecosystem functioning ORCHIDEE (LSCE) - Dynamic global vegetation model (DGVM) Isotopic tracers Remote sensing INRA Grignon: long-term field studies of agroecosystem functioning

  9. A multi-regional study using bioclimatic models Thomas et al. 2004. Nature • Used species-based bioclimatic models for several regions plus species area relationships to predict the effects of climate change on biodiversity. •"We predict, on the basis of mid-range climate-warming scenarios that 15-37% of species... will be 'committed to extinction'" by the year 2050. • In many regions, climate change was predicted to be a more important treat to species extinction than habitat destruction.

  10. Scaling up to global diversity / Feedback to global C cycle and climate DGVM 2100 Predicted collapse of S. American rainforest Cramer et al. 2001 GCB BIOMOD BIOMOD DGVM DGVM Aggregateto PFTs Compare Scale up to globe Broadleaved evergreen Broadleaved evergreen Global PFT distribution Quercus ilex

  11. Thanks to everyone who contributed to this theme and my apologies to everyone that I left out by oversight. We will be planning a theme meeting in the near future. Please let us know if you are interested.

More Related