Download - Philippe Keckhut Service d’Aéronomie/IPSL
November 2008
www.geomon.eu
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
Global Earth Observation and MonitoringGEOMON
November 2008
www.geomon.eu
Scientific Questions
• What are the regionalregional European trendsEuropean trends and variability of atmospheric composition in relation to changes in surface emissions?
• How to validate andvalidate and integrate satellite integrate satellite observationsobservations with ground-based and airborne observations to obtain a coherent picture?
• What are the global trends of atmospheric global trends of atmospheric compositioncomposition and how to reduce the uncertaintiesreduce the uncertainties of surface emissions and atmospheric processes?
November 2008
www.geomon.eu
GEOMON : GEOSS atmosphere
GEOmon is a prototype for a European contribution to GEOSS
November 2008
www.geomon.eu
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,
GEOSSCourtesy Dr. Brendan Kelly GEO Sec.
November 2008
www.geomon.eu
Operational system for climate?
November 2008
www.geomon.eu
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
www.geomon.eu
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
www.geomon.eu
Act 6:
Data dissemination
GEOmon Data Center
Outreach
User Interfaces
Projects
Organizations
Policy
Act3: Aerosols
& Climate
Act2:Reactive Gases
& Pollutants
Act1:Greenhouse
Gases
Act4: Stratospheric
Ozone
Act
5: M
ode
ling
an
d In
tegr
atio
n
Surface & profile
in-situ
observations
Surface, profile, column remote sensing observations
Integration & Harmonization
Modeling
Selecting representative sites
Processing & Trend Analysis
GEOmon Project structurehttp://www.geomon.eu/
November 2008
www.geomon.eu
High towersSurface observatories Flask sampling sites
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
Air-borne sampling
November 2008
www.geomon.eu
• Network of networks of surface reactive gases measurementsNetwork 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 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 Network of ground-based remote sensing measurements for satellite validationsatellite validation Link data from ground-based remote sensing networks and passenger aircraft programs to satellite measurements, in synergy with model studies.
Activity 2 - Pollutants & Climat
Year1990199520002005
Key species: CO, O3, NO2
November 2008
www.geomon.eu
Activity 3 - Aerosols and Climate
• Harmonize and quality-check dataHarmonize and quality-check data from ground-
based in-situ and remote sensing measurements
• Create of the European Network of Aerosol European Network of Aerosol
Observation NetworksObservation Networks (ENAN) data base,
complementary to satellite data.
• Assess the 4-D aerosol distribution4-D aerosol distribution over Europe
using ENAN
November 2008
www.geomon.eu
Activity 4 - Stratospheric O3 & Climate
• Continued monitoringmonitoring of O3, NO2, BrO, Cly/Fy, T, H2O, aerosol/PSC from ground (NDACC) and space
• Homogenisation and consistency of time seriestime series
• Identify linkslinks between stratospheric OO33 and climateclimate changes.
• Insure satellite continuity
November 2008
www.geomon.eu
Integration & Modeling Studies
• Develop integrated data productsintegrated data products combining assimilation model results, ground-based data and remote sensing fields
• Improve satellite retrievalssatellite retrievals
• Analyze long-term trendslong-term trends in existing model results and check consistency with trends in observations
• Constrain budgetsbudgets
• EvaluateEvaluate global & regional modelsmodels with GEOMON data
• OptimizeOptimize measurement networksmeasurement networks through comparisons between observed and modeled tracer distributions
November 2008
www.geomon.eu
Geomon satellite remote sensing list
November 2008
www.geomon.eu
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) Aircraft
(0 - 20km)
Satellite(0 - ~100km)
10
1
0.01
0.1
100
Free Troposphere
Stratosphere
Boundary layer
Tall tower(~500m)altitude
(km)
Surface air
BrO CH4
Cly COCO213CO2
CO18OFyH2
HCHO H2ON2ONOx
O3
PSCSF6
TempAerosols
Outgoing IR
Reflected solar radiation
Laser
November 2008
www.geomon.eu
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
www.geomon.eu
Towards a “one-stop shop”:Towards a “one-stop shop”:
Establish a common GEOMON Data Centrecommon 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 for and 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
GEOMON Data Centre
November 2008
www.geomon.eu
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