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TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION
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TH2.L10.5: OVERVIEW ON CALIBRATION AND VALIDATION ACTIVITIES FOR ESA’S SOIL MOISTURE AND OCEAN SALINITY MISSION

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  • 1. The Soil Moisture and Ocean Salinity Mission - Overview on calibration and validation activities - Susanne Mecklenburg SMOS Mission Manager Steven Delwart and Catherine Bouzinac IGARSS, Hawaii, 29 July 2010
  • 2. The first months of SMOS … 2 November: Launch from Plesetsk, Russia, injection orbit very close to target, good pointing and stability 3 November: Antenna deployment 17 November: Instrument switch-on, 1 st download over ESAC, first image Commissioning phase finished at the end of May
    • NOW
    • Routine phase has started, handover between development and operations teams
  • 3. CNES – Toulouse Satellite Operations ESAC – Villafranca Data Processing Ground Segment & X-Band Acquisition Station, Instrument Operations ESRIN – Frascati User Services & Mission management ESTEC - Noordwijk Post Launch Support Office Kiruna Station Long-term Archive Reprocessing Centre S-Band Acquisition Svalbard Station NRT Acquisition Station Science and Near-Real Time users Responsible agencies in operations phase ESA – responsible for overall coordination and funding of mission and ground segment operations CNES – responsible for running and funding satellite operations from the Mission Operations Centre at CNES Toulouse (with ESA contribution for specific payload operations)
  • 4. SMOS status
    • Space and ground system have been tested in the commissioning phase
    • Payload and platform functioning well with minor anomalies
    • Ground segment is acquiring and processing data up to level 2 and providing data in NRT to ECMWF
    • Data availability
    • First Level 1C products (and some data sets for level 2) released to cal & val PIs mid April
    • General release of L1C products (brightness temperatures) 23 July 2010
    • General release of L2 products (soil moisture and ocean salinity) planned for September 2010
  • 5.
    • 1. Calibration activities
    • Instrument calibration and performance
    • 2. Validation activities
    • ESA CalVal AO for SMOS in 2005
    • Organisation of the validation process at ESA
      •  Expert Support Laboratories
      •  Campaigns
      •  Support to key validation sites
      •  ELBARA instruments
    • National Expert Centres (level 3 & 4 data products)
    • Collaboration with Aquarius and SMAP
    • Validation methodology for soil moisture and ocean Salinity
    Calibration & validation activities
    • Dedicated sessions
    •  SMOS and ocean surface salinity TH3.LO2
    • SMOS: the beginning of a L-Band generation of global remote sensed soil moisture observations FR1.L10
    • SMOS soil moisture science and products FR3.L10
  • 6.
    • 30 proposals involving soil moisture
    • 14 proposal involving ocean salinity
    • 3 proposals involve soil moisture and ocean salinity
    • 3 proposals involve brightness temperature only
    • 1 proposal for calibration of geolocalisation biases
    SMOS Validation and Retrieval Team 43 PIs from 19 countries Soil moisture test sites Ocean salinity test sites
  • 7. Expert Support Laboratories are responsible for “ L1& L2 algorithm development, evolution and validation”. Reconstruction and Calibration – level 1 Observatoire Midi-Pyrenees (F) Universitat Politecnica Catalunya (E) Industrial partner: Deimos (P) Sea Surface Salinity – Level 2 Laboratoire d’Oceanographie et de Climatologie (LOCEAN) (F) Institut de Ciències del Mar CMIMA-CSIC (ICM) (E) Institut français de recherche pour l'exploitation de la mer (IFREMER) (F) Industrial partner: Argans (UK) Soil Moisture – Level 2 Centre d’Etudes Spatiales de la Biosphere (CESBIO) (F) Institut Pierre Simon Laplace (IPSL) (F) Institut National de Recherche Agronomique (INRA) (F) Tor Vergata University (I) Industrial partner: Array (CND) Expert Support Laboratories
  • 8. National Expert Centers are responsible for “ SMOS L3 & L4 algorithm development, evolution and validation” National Expert Centres CATDS (F) Soil Moisture EC - CESBIO - Y. Kerr CATDS (F) Ocean Salinity EC - IFREMER - N. Reul CP-34 (E) Barcelona Expert Centre BEC - ICM-UPC - J. Font “ Collaborating Agencies do not have any formal responsibility in SMOS” Collaborating Agencies Aquarius and SMAP projects - NASA Expert Centres
  • 9. Data sets and reports available on earth.esa.int/campaigns and the SMOS Cal/Val portal Sea Surface Salinity Soil Moisture Cryosphere ESA EO Campaigns Tower-based radiometric measurements in Antarctica, vicarious calibration of brightness temperature over the Dome Concordia area DOMEX 2005 - 2008 Airborne campaign in cooperation with the Australian’s National Airborne Field Experiment (NAFE 05) at the Goulburn River Catchment in November 2005; site extensively monitored and studied for SM CoSMOS 2005 US Salinity Temperature and Roughness Remote Scanner (STARRS) was exploited during airborne campaign over France and Spain in 2001 providing airborne L-band observations over large areas EUROSTARRS 2001 Airborne campaign in April 2008 over the key soil moisture validation sites of SMOS, in Germany and Spain Rehearsal 2008 Airborne campaign in August 2007 to perform dual-pol measurements and assess absolute accuracy of HUT2D, the interferometric radiometer of Helsinki University of Technology, and demonstrate the retrieval of a sea surface salinity gradient off the coast of Helsinki using an interferometric radiometer. Demonstrator 2007 Airborne campaign in the Gulf of Bothnia (Finland) in March 2007 to acquire L-band measurements over sea-ice and test the retrieval of ice types and ice thickness SEA-ICE 2007 Airborne campaign in Norway (North Sea) in 2006 to acquire data under different oceanographic conditions for sea surface salinity retrieval COSMOS 2006 Surface Monitoring of the Soil Reservoir Experiment near Toulouse (campaign not funded by ESA) CESBIO and CNRM fund this activity SMOSREX Foam Rain Oil Slicks and GPS reflexions in 2003, measuring L-Band polarimetric emission under controlled (foam and rain) conditions (campaign not funded by ESA) FROG Ocean salinity airborne campaign in 2001/2003, with L-band radiometer EMIRAD from Technical University of Denmark, several flights with variable wind conditions; discovery of wiggles, investigating azimuthal dependence of the two first Stokes parameters LOSAC 2001 Wind and Salinity Experiment in 2000/2001, at offshore oil drilling platform near Barcelona to provide multi-angular polarimetric brightness temperature under different wind/wave conditions WISE 2000/2001
  • 10. Campaigns during 2010
    • Airborne campaigns
    • ESA campaign – similar to rehearsal campaign, validate L1 brightness temperature and L2 soil moisture retrieval with SkyVan, in May-June 2010
    • SW Australia – University of Melbourne, campaign performed in Feb 2010
    • CAROLS: Combined Airborne Radio-instruments for Ocean and Land Studies, over South-West France and Bay of Biscay, funded by CNES – over Valencia Anchor Site, funded by ESA; campaign from April to July 2010, with ATR-42
    • Ground campaigns
    • In-situ measurements and upscaling to SMOS pixel at individual PI sites in different areas of the globe (e.g. Sahel, Tibet, Duero, Oklahoma, etc)
    1 2
  • 11. ESA key validation sites for soil moisture
    • Valencia Anchor Site, Spain
    • typical Mediterranean sparse vegetation ecosystem, mainly bare soil and limited vegetation;
    • the vegetation consists mainly of vineyards, pine trees and shrubs and is thus comparatively uniform with regard to hydrological parameters;
    • the site is well instrumented and has been the location of other field campaigns.
    • image © E.Lopez Baeza
    • Upper Danube Catchment, Germany
    • Typical temperate continental ecosystem;
    • Field measurements include three eddy correlation towers for wind, H2O and CO2 and 60 time delay reflection soil moisture probes for continuous measurements.
    • Image © A.Loew
    ELBARA – L-Band ground based radiometer
  • 12. Elbara versus SMOS at Sodankylä
    • Elbara measurements at fixed 53  angle of incidence (mineral soil site)
    • SMOS data selected representing the same range of incidence angles (48  – 58  )
    • Elbara observations depict the large diurnal change of T b between wet and dry snow cover conditions
    • During late April snow on bogs and lakes within the SMOS pixel may not refreeze during the night anymore => small bias observed between SMOS- and Elbara-derived Stokes I parameter
     Jouni Pulliainen
  • 13.
    • Five networks have been inventoried in detail for Phase I
    MESONET REMEDHUS SMOSMANIA OzNet (2) International Soil Moisture Network Data Base
  • 14.
    • Four other networks have been inventoried for future phase II
    Valencia Anchor Station Upper Danube cal/val site TERENO Soil Climate Analysis Network International Soil Moisture Network Data Base Phase 2
  • 15. Ocean Salinity Validation Match-up SMOS L2 SSS and in-situ database  ARGO: more than 3300 floats  GDP: Global Drifter Program, surface buoys  Tropical mooring arrays: TAO, PIRATA, RAMA  ARGO Enhanced SSS Floats
  • 16.
    • Objectives
      • Provide an external ice-sheet target calibration reference, and serve as a basis for calibration monitoring
      • Validation of Tb SMOS products
      • Extension of sampling time during all 2010 minimum (Annual cycle spanning summer/winter)
    • Experiment details
      • Radiometer RADOMEX has been developed by IFAC Florence (I)
      • Thermal subsystem has undergone major upgrade wrt DOMEX-1 version, with the support of the ESTEC Thermal Division.
      • Measurements since end 2008
      • Analysis of SMOS Tb compared to RADOMEX Tb and monitoring of variations
    Observations at DOME-C station
    • Illustration of stability of brightness temperature with time
    • Antarctic plateau around Dome C good candidate for stability monitoring and across fov consistency check
    • © IFAC Florence
  • 17. H-pol ECMWF data assimilation study Integration of SMOS data into ECMWF forecasting model First guess departure: observation – model for 12 hours and all incidence angles Study objectives: - Operational monitoring of global NRT brightness temperatures - Quantification of the impact of SMOS observations on the forecast skill
  • 18. SMOS science studies
    • International Soil Moisture Network Study: provide in-situ soil moisture observations for validation of SMOS (and other satellite) data
    • ECMWF Data Assimilation Study: assimilation of SMOS data into forecast models
    • SMOS Sea Ice Study: L Band radiometry for sea ice retrievals
    • SMALT: Soil moisture from altimetry
    • ESA internal support to science studies ( ~ €1M, including studies on river outflow and assimilation, hydrology feasibility studies (open call for ideas))
    • Research Fellows in ESTEC and ESRIN
    Pol-Ice Campaign, Baltic Sea 2007
  • 19. SMOS Validation and Retrieval Team Workshop
    • Workshop to take place on 29-30 November 2010 in ESRIN, Frascati, Italy
    • Oral presentations/posters: abstract to be send to catherine.bouzinac@esa.int before 30 August 2010
    • Acceptance of abstracts as oral or poster will be confirmed by 20 September 2010.
    • Detailed agenda by end of September
    • Further information on earth.esa.int/smos
    • For information contact
    • [email_address] or [email_address]
  • 20. Level 0 – raw data Level 1C – Brightness Temperatures (NRT for operational users, browse product) Soil Moisture - Level 2 – Ocean Salinity Soil Moisture - Level 3 – Sea Surface Salinity Global, single-instrument Soil Moisture - Level 4 - Sea Surface Salinity Global, multi-instrument ESA National efforts Image reconstruction Scientific knowledge & assumptions & uncertainties; models and auxiliary data French and Spanish National Expert Centres Centre Aval de Traitement des Donnees SMOS (CATDS) For Soil Moisture – CESBIO Yann Kerr For Sea Surface Salinity – IFREMER Barcelona Expert Centre at ICM-UPC, J ordi Font Available data products
  • 21. How to get SMOS data
    • All SMOS data are systematically processed into L1 and L2 products at the DPGS/ESAC
    • Copy of data products is sent to LTA at Kiruna for long term archiving and cataloguing
    • LTA also provides online access for the most recent products (rolling on-line archive)
    • Registered users can obtain SMOS data products in two ways:
    • 1. By subscribing to the systematic distribution of products (“ subscription service ”): all data products required by the user are made available via FTP, to be collected by the user, or
    • 2. By searching the data product catalogue ( EOLI ) and submitting an order for selected archived products (limited to 20 products per orders). The catalogue also provides access (immediate download) to the most recent data through the rolling on-line archive at LTA
    • Subscription (= your research project relies on a continuous and regular flow of data)
    • L1 (A,B,C) and L2 data products
    • 10 auxiliary data types
    • submission of your full proposal through the EOPI portal
    • ESA’s Help Desk ( [email_address] ) will contact you to collect your data requirements and set-up the subscription for you.
    • data delivery via pull from a FTP
    • EOLI
    • http:// earth.esa.int/EOLi/EOLi.html .
    • (= your research project relies on a one-off data ordering/ you need limited amount of data)
    • L1 (B,C) and L2 data products (present and previous baseline)
    • limited amount of auxiliary data types
    • registration through the EOPI portal
    • search entire SMOS data catalogue, order or download data directly (both limited access)
    • ESA’s Help Desk ( [email_address] ) will send notification where data can be collected.
  • 22.
    • SMOS Data viewer ftp://193.146.123.163/smos/software/SMOSView/
    • Microscopic & detailed view for products and auxiliary data files
    • SMOS Tool Box (BEAM) http://www.brockmann-consult.de/beam-wiki/display/SBOX/SMOS+Toolbox+for+BEAM
    • Enables reading, visualisation and basic analysis of SMOS L1C & 2 products
    • SMOS Global Mapping Tool
    • ftp://193.146.123.163/smos/software/GMT/
    • Macroscopic view for L1 and L2 Products
    • SMOS Comparison Tool
    • ftp://193.146.123.163/smos/software/SCOT/ (to be delivered in the next weeks)
    • SCoT provides a “Delta” view for L1 Products
    • SMOS XML R/WAPI
    • ftp://193.146.123.163/smos/software/XML_RW_API/
    • Library in C++ to read and write SMOS Products and auxiliary file developed by INDRA Espacio S.A.
    SMOS Tools
    • SMOS webpage
    • earth.esa.int/smos
    • Information on
    • Data quality, products and release dates
    • Processors and relevant documentation
    • Instrument configuration (commissioning and routine)
    • Mission planning
    • Events (SVRT workshop etc)
    • Available tools (Toolbox, Data viewer and others)
    • link to CESBIO SMOS blog
    • Data access
    • eopi.esa.int (proposal or registration)
    • http://earth.esa.int/EOLi/EOLi.html (catalogue)
    • Campaign data
    •  earth.esa.int/campaigns
  • 23. Thank you for your attention!

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