IGCMG : IPSL Global Climate Modelling Group, models, requirements and projects

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1 IPSL Institut Pierre Simon Laplace IGCMG : IPSL Global Climate Modelling Group, models, requirements and projects Marie-Alice Foujols [email protected] November 2005 Federation of 5 research laboratories 700 people (researchers, engineers, post-doc, administratives, students) CETP : Centre d'étude des Environnements Terrestre et Planétaires Centre for the Study of Earth and Planets Environments LMD : Laboratoire de Météorologie Dynamique Laboratory of Dynamic Meteorology LOCEAN : Laboratoire d'océanographie et du Climat : Expérimentation et Approche Numérique Laboratory of Oceanography and Climatology : Experiments and Numerical Approach (LODYC : Laboratoire d' Océanographie DYynamique et de Climatologie - Laboratory of Dynamic Oceanography and Climatology) (LBCM : Laboratoire de Biogéochimie et Chimie Marines - Laboratory of marine Biogeochemistry and Chemistry) LSCE : Laboratoire des Sciences du Climat et de l' Environnement - Climate and Environment Sciences Laboratory SA : Service d'aéronomie - Aeronomy Service IPSL Institut Pierre Simon Laplace Research topics Each lab is dependant on several research Institutions, including : Centre National de la Recherche Scientificue / National Centre for Scientific Research (CNRS) Commissariat à l Energie Atomique / Nuclear Energy Agency (CEA) Institut de Recherche pour le Développement / Research Institute for Development (IRD) Universities and Schools : Paris (UPMC) and Versailles-Saint-Quentin (UVSQ), Ecole Polytecnique (X), Ecole Normale Supérieure (ENS) CNES : Centre National d Etudes Spatiales / National Center for Space Research LMD : X, ENS, UPMC, CNRS LOCEAN : UPMC, CNRS, IRD LSCE: CNRS, CEA CETP : CNRS, UPMC SA : CNRS, UPMC, UVSQ Global Earth and planets environments ; Local, regional and global scales ; Past, present and future ; Process and climate studies ; Natural variability and anthropogenic change ; Atmospheric chemistry studies ; Ionosphere, magnetosphere ; Planetology.

2 Methods Experiments Ground based experiments Aircraft experiments Oceanic cruises (hydrography and deep-sea cores) Balloons Satellite observations Continental ice cores Permanent observatories (stratospheric ozone, Greenhouse gases, oceanic CO 2 ) Theory Modelling Process studies Large simulations IGCMG : IPSL Global Climate Modelling Group Steering group coordinated by Pascale Braconnot (LSCE/IPSL) Coordination for scientific studies using large simulation A shared federative tool : IPSL earth system model based on IPSL components Common starting point for new climate studies Researchers and engineers from different IPSL laboratories : Model developers (scientific and technical) ~15 Model users starting new studies and new applications ~ 50 Scientists involved in results analyses ~150 IPSL models IPSL Earth System Climate Model INCA CH4, CH4_AER, NMHC, NMHC_AER, LMDZ Mars, nudged, 1D, ORCHIDEE, ORCHIDEE_OL OASIS IPSLCM4_v1 MODIPSL Scripts + carbon Post-traitements IPSLCM4_LOOP Which common tools? Which specific tools? ORCA2_LIM OPA ORCA2_OFF_TRC PISCES LOBSTER SRC_TRC ORCA2_LIM_PISCES ORCA2_LIM GYRE ORCA05 1D NEMO IPSL-CM4 Physique LOOP Chimie Système terre Continents Atmosphère Océan Orchidée Surface continentale sols et végétation STOMATE Biogéochimie continentale CH4, COV, LMDZT LMDZ Circulation Atmosphèrique INCA CO2 Chimie Gaz & LMDZ-INCA ORCALIM Circulation Océanique Glace de mer PISCES Biogéochimie et biologie marine DMS Nutritifs Sels marins

3 IPSLCM4 Energy, water Carbon Chemistry, aerosols Land surface, vegetation ORCHIDEE Evaporation, rivers... Circulation, precip... SST, ice extent.. Vegetation, soil carbon CH 4, VOCs, Aerosols Aerosols Deforestation, land use Atmosphere LMDZ CO 2 NO x, O 3 Chemistry Iron Pollutant emissions Human activities Ocean, sea-ice ORCA-LIM Biogeochemistry DMS CO2 emissions Sea salt People : Who works on what? Elemental models : -OPA : R. Benshila, C. Lévy, C. Talandier - LMDZ: L. Fairhead, A. Jejcic, M.-P. Lefebvre, I. Musat, -ORCHIDEE : M. Mancip - INCA : A. Cozic - IOIPSL: J. Bellier Software environment J. Bellier, P. Brockmann, P. Cadule, A. Caubel, L. Fairhead, M.-A. Foujols, C. Lévy Parallelism L. Fairhead, A. Jejcic, Y. Meurdesoif Assembling (models, scripts) : LMDZ-INCA : M.-A. Filiberti, A Cozic LMDZOR: L. Fairhead, M. Mancip, CM* : P. Cadule, A. Caubel, L. Fairhead, M.A. Foujols, Scientific validation, Long simulation following IPCC : S. Denvil, LMDZ : I. Musat, LMDZ-INCA : M.-A. Filiberti, LOOP : P. Cadule Data distribution P. Brockmann, S. Denvil, L. Fairhead Projects - ENSEMBLES: A. Ildekadi - CarbOcean: Ch. Ethé - LOCEAN : Ch. Deltel TRAINING, DOCUMENTATION, PORTABILITY, TECHNICAL SURVEY, IPSLCM4_v1 : IPSL climate model LMDZ 3.3 for atmospheric component ORCHIDEE for continental process including hydrology (SECHIBA), carbon (STOMATE), dynamic vegetation (LPJ) OPA - ORCA2 for oceanic component including tracer transport LIM for oceanic sea ice component INCA for atmospheric chemistry and aerosols PISCES for oceanic biogeochemistry OASIS 2.4 for coupling part (from CERFACS - Toulouse - France) A version based on OASIS3 exists and is used for new studies IOIPSL and NETCDF libraries for datasets Ferret for automatic atlas (fast) and monitoring (WWW and dods) MODIPSL for software infrastructure : access, compilation, pilot experiment, automatic atlas and monitoring, direct dods server storage Components requirements Large diversity of usage stand-alone, coupled to (part or complete) of Earth System Model, different sub-sample : physics on Earth or on Mars, different dynamics (FD, FE, spectral, ), Better knowledge now of the interface between tools and component models Modularity is a key issue Same tools (from a user point of view) for all IPSL components including earth system Iterative method : from referenced version with addition of adaptation required for a new study Do not underestimate working time to adopt new tool

4 IPCC simulations roadmap History from IPSLCM4_v IPSLCM4 beta Calendar File naming convention Post-processing Frozen IPSLCM4_v1: IPCC to IPSLCM4_v2 Carbon configurations : LOOP History drom IPSLCM4_v IPSLCM4 beta Calendar File naming convention Post-processing Frozen IPSLCM4_v1 : IPCC Carbon configurations LOOP to IPSLCM4_v IPCC AR5 High diversity on computing resources From the PC to the Earth Simulator PC Linux for compilation, small test and validation, Local facilities : Linux server IPSL dods server 2 main centers : IDRIS/CNRS : Computing resources : NEC SX-5 and IBM, large file server, dods server CCRT/CEA : Computing resources : NEC SX-6 and HP, large file server, dods server Portability Distributed environment : local PC, compiler server, computing server, file server, Installation as standard user (without root permission, with security acceptability)

5 IPSL expertise : Models Modelisation! Simulation Evolution, user-friendly, sustained development of tools Development and production Variety in length of simulations : Process studies, Climate Variety in configurations : Coupled configurations from stand-alone to Earth System Model Do not forget planets and international collaboration Storage and post-treatment well balanced with computing resources Portability on a large variety of computers (PC cluster until Earth Simulator) Participation in international standardized studies : IPCC : 30% resources AMIP, CMIP, PMIP,... IPSL software infrastructure : summary IPSL expertise in model development Wide variety of configurations and usage Wide variety of computers centers Interest in a set of tools : A collection of tools Standard tools Independent tools Widely used tools Example : Oasis