Institut PierreSimon Laplace IPSL Bringing together key laboratories
Institut Pierre-Simon Laplace (IPSL) Bringing together key laboratories of the Paris area in the field of environmental studies
IPSL = a federation of 6 laboratories in the Paris area • • LATMOS: atmospheric chemistry, mesoscale processes LISA: atmospheric chemistry, air quality LMD: atmospheric dynamics, climate studies LOCEAN: physical and biogeochemical studies of the ocean • LPMAA: High altitude atmosphere • LSCE: paleoclimatology, geochemical cycles, climate impacts in total about 1000 persons (permanent + temporary researchers; permanent + temporary support)
Key areas of the IPSL action • Modeling studies • Observational studies: in situ and from space • Prepare the tools which are necessary for focused scientific studies: participation to the IPCC, field campaigns, planetary sciences
IPSL Climate Model Atmosphere and Continental surfaces 19 vert. levels(LMDZ - ORCHIDEE) coupler (OASIS) 30 vert. levels Résolution: Atm: 3. 75°x 2. 5° (~350 km) Oce: 2°x 2° Ocean and sea-ice (ORCA-LIM)
Participation to IPCC Simulations [GIEC 2007]
Earth System Model Continents Atmosphere Orchidée Physics LMDZT LMDZ Atmospheric Circulatio èn Continental surface sols et végétation STOMATE Carbon CO 2 INCA CH 4, COV, Chemistry Aérosols Chemistry Gases & Aérosols ORCALIM Circulation Océanique Glace de mer PISCES Biogéochimie et biologie marine é Biochemistry Carbon Cycle Oceans Aérosols Carbon DMS Nutriments Sels marins
Atmospheric CO 2 seasonal cycle : eg. Mauna Loa DIC Penetration in Atlantic Ocean GLODAP IPSL-CM 4 -LOOP
The chemistry-transport model CHIMERE (IPSL/LMD) A communitary model in free access http: //euler. lmd. polytechnique. fr/chimere CHIMERE is a chemistry-transport model for the calculation of concentrations fields as: ozone, NOx, COVs, aerosols, dust. . . More than 100 users More than 20 institutes are using CHIMERE for daily forecast More than 35 institutes for research More than 50 papers in peer-reviewed journals Involved in numerous European projects such as GEMS, PROMOTE, City-Delta, Euro-Delta, CIRCE, AMMA, GEOMON, NATAIR. Vertical cross-section of a dust event over Ukraine Used for analysis, forecast, pollution peaks and trends, direct or adjoijnt modelling, data assimilation. (March 2007) Example of daily forecast experimental (at LMD): - France (GEMS) - Africa, Atlantic and Europe: CHIMEREDUST for minreal dust operational: PREVAIR french nationla plat-form (INERIS) CHIMERE users in Europe One of the forecast web sites
Site d’observation: L’exemple du SIRTA Objectives: § Bring together and provide access to remote sensing instruments; provide access to observations § Observe physical processes in the troposphere using instrument synergies: ü Long-term routine measurements ü Field campaigns § Provide experimental teaching and outreach • Mid-latitudes: 48, 7°N - 2, 2°E • Urban-rural region http: //www. sirta. fr Applications: Cloud and aerosol physical process studies Lidar backscatter Sensitivities and trends in physical parameters Ground-Satellite Synergies Instrument development, comparisons, and qualification Cloud radiative effect Cloud optical thickness Lidar LMD Lidar Leosphere
Illustration des 6 satellites composant l'A-train. De gauche à droite : Aura, Parasol, Calipso, Cloudsat, Aqua, OCO. Crédits : CNES octobre 2004, illustration P. Carril
Observations satellitaires: exemple du bilan radiatif par Scara. B
Satellite measurements of CO 2
Key issues • Data distribution, outreach • Combination of various tools for specific aims
- Slides: 14