1 / 18

Philippe Keckhut Service d’Aéronomie/IPSL

Global Earth Observation and Monitoring GEOMON. Philippe Keckhut Service d’Aéronomie/IPSL

marge
Download Presentation

Philippe Keckhut Service d’Aéronomie/IPSL

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. Global Earth Observation and Monitoring GEOMON Philippe Keckhut Service d’Aéronomie/IPSL P. Ciais, C. Textor, M. Logan, CEA/LSCE, F; E. G. Nisbet, RHUL, UK; B. Buchmann, J. Klausen, Empa, CH;G. de Leeuw, UHEL, Finland; M. De Mazière, BIRA-IASB, B; M. Schulz, P. Rayner, CEA/LSCE, F; S. Godin-Beekmann, SA, F; K. Torseth, NILU, NO & GEOmon partners November 2008

  2. Scientific Questions • What are the regionalEuropean trends and variability of atmospheric composition in relation to changes in surface emissions? • How to validate andintegrate satellite observationswith ground-based and airborne observations to obtain a coherent picture? • What are the global trends of atmospheric composition and how to reduce the uncertainties of surface emissions and atmospheric processes? November 2008

  3. GEOMON : GEOSS atmosphere GEOmon is a prototype for a European contribution to GEOSS November 2008

  4. GEO and GEOSS… • GEO is an Intergovernmental Organization • 65 Nations • European Commission • 43 Participating Organizations • With a simple objective: To establish a global, coordinated, comprehensive and sustained system of Earth observing systems, GEOSS Courtesy Dr. Brendan Kelly GEO Sec. November 2008

  5. Operational system for climate? November 2008

  6. But also…. • Satellites have a limited lifetime • Successive satellites need inter-calibration even with similar experiment onboard • Ground-based network are required • Ground-based instruments are supposed to be supported by national agencies. Few ideas of consolidate costs : • Lidar profile: 1 k€ • Ozonesonde: 2 k€ • Spectrometers 50-100 k€ • Ground-based networks are not operational yet • Becoming operational has a larger cost November 2008

  7. GEOMON Objectives • Build an integrated pan-European atmospheric observing system of greenhouse gases, reactive gases, aerosols, and stratospheric ozone. • Quantify and understand the ongoing changes of the atmospheric composition • Integrate ground-based and satellite observations November 2008

  8. GEOmon Project structure http://www.geomon.eu/ Surface & profile in-situ observations Surface, profile, column remote sensing observations Integration & Harmonization Modeling Selecting representative sites Processing & Trend Analysis Act1:GreenhouseGases Act 6: Data dissemination GEOmon Data Center Outreach User Interfaces Projects Organizations Policy Act2:Reactive Gases& Pollutants Act5: Modeling and Integration Act3: Aerosols & Climate Act4: Stratospheric Ozone November 2008

  9. Surface observatories Flask sampling sites Air-borne sampling High towers Activity 1 - Greenhouse gases • Observations: • In situ monitoring of CO2 and CH4 • Airborne measurements of global distributions of CO2 and CH4 • Solar (near-infrared)Fourier Transform Infrared spectrometers across Europe • Products • Near Real time greenhouse gas in situ data • Integrated CO2 and CH4 global products combining atmospheric assimilation models, ground based data and remote sensing fields, in linkage with existing modelling projects • Assess potential of satellite observations for constraining European sources of CH4 and CO2 November 2008

  10. Activity 2 - Pollutants & Climat • Network of networks of surface reactive gases measurements • Quality assured, harmonized, and regionally representative data sets in the European boundary-layer using long-term surface observations. - • Airborne monitoring of the free troposphere Provide quality assured and integrated chemical composition measurements of the global free troposphere, with focus on O3 and CO from CARIBIC. • Network of ground-based remote sensing measurements for satellite validationLink data from ground-based remote sensing networks and passenger aircraft programs to satellite measurements, in synergy with model studies. Key species: CO, O3, NO2 November 2008

  11. Activity 3 - Aerosols and Climate • Harmonize and quality-check datafrom ground-based in-situ and remote sensing measurements • Create of the European Network of Aerosol Observation Networks(ENAN) data base, complementary to satellite data. • Assess the 4-D aerosol distribution over Europe using ENAN November 2008

  12. Activity 4 - Stratospheric O3 & Climate • Continued monitoringof O3, NO2, BrO, Cly/Fy, T, H2O, aerosol/PSC from ground (NDACC) and space • Homogenisation and consistency of time series • Identify links between stratospheric O3and climate changes. • Insure satellite continuity November 2008

  13. Integration & Modeling Studies • Develop integrated data products combining assimilation model results, ground-based data and remote sensing fields • Improvesatellite retrievals • Analyze long-term trends in existing model results and check consistency with trends in observations • Constrain budgets • Evaluate global & regional models with GEOMON data • Optimizemeasurement networks through comparisons between observed and modeled tracer distributions November 2008

  14. Geomon satellite remote sensing list November 2008

  15. Europeen atmospheric data • Lot of Networks local->national->international • Networks with real added values • Similar data include in different networks • Similar data generated for different purposes • Different data policies • Different qualities • Acces difficult • No unique catalog, format, metadata • Many initiatives (Projects, agencies) November 2008

  16. Towards a “one-stop shop” for European atmospheric composition observations • Existing databases have a large added value: • Quality check • Share technology & methodology improvements • insure network homogeneity • International connections November 2008

  17. GEOMON Data Centre • Towards a “one-stop shop”:Establish acommon GEOMON Data Centre for atmospheric composition parameters, including near-real time data products • Virtual data base at NILU http://geomon.ipsl.jussieu.fr/data/Datdata_dataNILU.html • - Common search facilities forand acess to : • GEOmon-funded data • External data • National & international databases of past and ongoing scientific projects, and other relevant activities • - Tools for data viewing and description November 2008

  18. Conclusions • GEOmon is a prototype for a European contribution to GEOSS • GEOMON will developed a “one-stop shop” for European atmospheric composition observations • GEOMON data center will be a virtual data base, a portal towards existing data bases • Inter-operability and metadata are big issues • Models contribute to better evaluate measurement distributions • Cost for operational ground-based network need to be found November 2008

More Related