FR2.L10.3: TOWARDS VALIDATION OF SMOS LAND PRODUCTS USING THE SYNERGY BETWEEN MODELS, AIRBORNE AND GROUND-BASED DATA OVER THE VALENCIA ANCHOR STATION. DEFINITION OF MATCHING-UP POINTS TO SMOS OBSERVATIONS
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FR2.L10.3: TOWARDS VALIDATION OF SMOS LAND PRODUCTS USING THE SYNERGY BETWEEN MODELS, AIRBORNE AND GROUND-BASED DATA OVER THE VALENCIA ANCHOR STATION. DEFINITION OF MATCHING-UP POINTS TO SMOS OBSERVATIONS

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FR2.L10.3: TOWARDS VALIDATION OF SMOS LAND PRODUCTS USING THE SYNERGY BETWEEN MODELS, AIRBORNE AND GROUND-BASED DATA OVER THE VALENCIA ANCHOR STATION. DEFINITION OF MATCHING-UP POINTS TO SMOS OBSERVATIONS Presentation Transcript

  • 1. Towards Validation of SMOS Land Products Using the Synergy Between Models, Airborne and Ground-based Data Over the Valencia Anchor Station. Definition of Matching-up Points to SMOS Observations Ernesto Lopez-Baeza & VAS Team [email_address]
  • 2. VAS Team Ernesto Lopez-Baeza, Ahmad AlBitar, M. Carmen Antolin, Jan Balling, Fernando Belda, Catherine Bouzinac, Alejandro Buil, Fernando Camacho, Aurelio Cano, Ester Carbo, J. Cernicharo, M. Amparo Coll, Malcolm Davidson, Steven Delwart, Arancha Fidalgo, Achim Hahne, Silvia Juglea, Yann Kerr, Beatriz Martinez, Christian Mätzler, Susanne Mecklenburg, Arnaud Mialon, Cristina Millan, Cecilia Narbon, Mickael Parde, Fernando Requena, Kauzar Saleh, Mike Schwank, Niels Skou, Sten S. Søbjærg, Jorge Tamayo, I Torralba, Elena Torre, Ingo Voelksch, Jean-Pierre Wigneron, Patrick Wursteisen, Mehrez Zribi University of Valencia AEMet, CESBIO, CETP-CNRS, CHJ, EOLAB, EPHYSE-INRA, ESA, TUD, University of Cambridge (now CDTI), WSL
  • 3. Outline The VAS Site Soil Moisture Caracterization at the VAS Site Components of the Validation Methodology Ground Measurements Including Ground-based L-band Radiometry Exp. Definition of Homogeneous Environmental Units Modeling Aircraft Campaigns ESA SVRC (2008) CNES CAROLS (2009) ESA-CNES CAROLS (2010) Towards the Definition of a Matching-up Point to SMOS Observations Conclusions
  • 4. Validation of SMOS Products over Mediterranean Ecosystem Natural Vegetation at the Valencia Anchor Station Reference Area SMOS Cal/Val AO Proposal no. 3252 L-Band Airborne Experiments over Land and Ocean SMOS Cal/Val AO Proposal no. 3252
  • 5. GERB Ground Validation Campaign June 2003 GERB Ground Validation Campaign February 2004
  • 6. Monthly Averages Soil Moisture Content 1940 - 2001 Hydrological Planning Office JAN FEB MAR APR MAY JUN Climatology from Satellites Group Monthly averages Soil Moisture Content 1940 - 2001 Climatology from Satellites Group Hydrological Planning Office JUL AUG SEP OCT NOV DEC Monthly averages Soil Moisture Content 1940 - 2001
  • 7. Over continental surfaces, SM validation requires a realistic estimation of surface SM in different areas within a SMOS footprint. SM variability depends on soil intrinsic and extrinsic factors. It is necessary to have a sampling strategy that integrates the relationships between hydrological variables, particularly SM, and the parameters of the landscape at different spatial scales. SOIL MOISURE CHARACTERIZATION OF THE VALENCIA ANCHOR STATION Ground Sampling Strategy 10 x 10 km 2 reference area 50 x 50 km 2 SMOS reference pixel 125 x 125 km 2 ECOCLIMAP grid size
  • 8. Making Sense of Satellite Data Valencia Anchor Station SMOS Validation Plan Soil Moisture Automatic Stations Battery Acquisition and Control Board RF Module RS232 Solar Panel Antenna Soil Moisture Probe Schematics of the soil moisture network Network topology 10 X 10 km 2 Control Area Vegetation cover Soil type Lithology Fisiography Synthetic Map Composition Map of Synthetic Units Digital elevation model Map of total units 125 x 125 km 2 SMOS Validation Area 50 x 50 km 2 SMOS Reference Pixel 10 x 10 km 2 Control Area SMOS Validation Approach Map Of Selected Homogeneous Units
  • 9. EOLAB 125x125 km 2 14th April 2008 Fractional Vegetation Cover 22nd April 2008 30th April 2008 Leaf Area Index 14th April 2008 22nd April 2008 30th April 2008 14th April 2008 MODIS Optimum Water Index 22nd April 2008 30th April 2008
  • 10.
    • an irregular distribution of stations
    • => spatialization of input data - inverse distance weighed method (IDW)
    • area divided into 25 areas of 10x10km²
    • average of all soil moisture data from the 25 areas - representative for the 50X50 km²
    Valencia Anchor Station (VAS)
    • Location: Utiel –Requana Plateau (Valencia, Spain)
    • Land use: vineyard crops, olive and almond trees
    • surrounded by pine a nd Mediterranean forests.
    50 km 50 km 4 complete meteorological stations 18 rain gauges in situ soil moisture measurements S. Juglea
  • 11. S. Juglea
  • 12. S. Juglea
  • 13. SMOS MELBEX (Mediterranean Ecosystem L-band Characterisation Experiment) MELBEX-1 Matorral and Shrubs Valencia Anchor Station, Jun. 2005 - Feb. 2006
  • 14. SMOS MELBEX (Mediterranean Ecosystem L-band Characterisation Experiment) MELBEX-2 Full phenological cycle of vineyard Valencia Anchor Station, Mar. - Nov. 2007 Start: 23 Mar. 2007 Monitoring vineyard evolution: left to right, top to bottom: 19 Apr, 29 May, 22 Jun, 14 Jul, 2 Oct, 19 Oct. 2007
  • 15. SMOS MELBEX (Mediterranean Ecosystem L-band Characterisation Experiment) MELBEX-3 Monitoring SM and environmental conditions during SMOS validation ELBARAII-3 Valencia Anchor Station, Sep. 2010-
  • 16. 1 st Dataset: 24 th Sep. – 29 th Oct. 2009 M. Schwank
  • 17.  wave Transmissivity of Vineyards
  • 18. ESA SMOS Validation Rehearsal Campaign @ the Valencia Anchor Station (April-May 2008) Significant Environmental Units in the Study Area
  • 19. 20 Team 1 Team 2 Team 3 Team 4 5 6 7 8 9 10 11 14 12 15 13 17 16 18 19 Ground Team Distribution Along the Flight Lines
  • 20.  
  • 21. S. Juglea
  • 22. ESA Rehearsal 2008 : a) Retrievals of three parameters (3-P: SM, optical depth, roughness) from low-altitude flights over vineyards show good temporal correlation compared to average field SM (5 cm depth), SURFEX SM (2 cm depth ) , SURFEX SM (5 cm depth), and SM unit maps (5 cm) . K. Saleh
  • 23. K. Saleh S. Juglea EMIRAD T B Intensive SM SM Unit map SM SURFEX SM (m 3 m -3 ) or TB/1000, (K)
  • 24. CNES CAROLS Campaign @ the Valencia Anchor Station (April-May 2009) Significant Environmental Units in the Study Area
  • 25. 2009 CAROLS Campaign @ VAS 27 th April, 19 th May, 28 th May
  • 26. K. Saleh
  • 27. C. Antolin SMOS 50x50 km 2 CAROLS 2009
  • 28. Total of 20 Teams 10 Stationary: 2 cilinders every 20 min & ThetaProbe every 10 min 6 Mobile: [3 cilinders + 3 ThetaProbe] X more or less 20-30 plots each (areas of 1 x 1 km 2 ) 4 Transects: [3 cilinders + 3 ThetaProbe] X more or less 20-30 plots each, in 10 x 10 km 2 control area
  • 29. Unit 9: Mixed vineyards and forest vegetation
  • 30. Stationary Teams Linked to Met Stations ThetaProbes Vol. Cylinders
  • 31. Environmental Unit studied Fixed-station Team representative of the Environmental Unit where it is placed isolated, uncoupled highest SM value irrigated non-irrigated not representative of Team EU06, far away, it rained, lower temperature
  • 32. All Data The three campaign days present low values although significant differences in SM, with values of 0.105, 0.081 and 0.048 m 3 /m 3 , respectively
  • 33. Team 7 Unit 9: Mixed vineyards and forest vegetation C. Millan
  • 34. C. Millan
  • 35. CAROLS 2009: b ) TB measurements at nadir over the whole area (day 1: dry, day 2: very dry, day 3: very dry) K. Saleh
  • 36. ESA – CNES CAROLS Campaign @ the Valencia Anchor Station (April-June 2010) Significant Environmental Units in the Study Area
  • 37. 7th July 2010!!!
  • 38.  
  • 39.  
  • 40. Towards the Definition of a Matching-up Point to SMOS Observations EMIRAD T B Intensive SM SM Unit map SM SURFEX SM (m 3 m -3 ) or TB/1000, (K)
  • 41. S. Juglea
  • 42.  
  • 43.
    • Ready to approach the scientific validation of SMOS land products
    • Improve both meteorological stations and SM network
    • The Environmental Units approach has proved to be a very useful tool in the estimation of SM over large reasonably “homogeneous” areas at SMOS scale
    Conclusions
    • The stationary plots have been found to provide optimum representativity of the more extensive units in which they are found.
    • The aircraft campaigns have been very useful to validate this methodology
    • The combination of SURFEX – ISBA – L-MEB is actually the reliable spatialization tool for the site at different scales
  • 44.
    • Spanish Research Programme on Space, Ministry for Science and Education
    • Directorate General for Climate Change, Regional Ministry for Environment, Water, Urban Planning and Housing, Generalitat Valenciana
    • European Space Agency (ESA)
    • Centre National d'Études Spatiales (CNES)
    • Institut Pierre Simon Laplace des Sciences de l’Environnment (IPSL))
    • Servicio de Licencias a Operadores Aéreos y Servicios Aeroportuarios, Agencia Estatal de Seguridad Aérea (AESA)
    • Aeropuertos Españoles y Navegación Aérea (AENA)
    • Valenciana de Aprovechamiento Energético de Residuos S.A. (VAERSA)
    • Agencia Estatal de Meteorología (AEMet)
    • Servicio de Tecnología del Riego, Instituto Valenciano de Investigaciones Agrarias (IVIA). Regional Ministry for Agriculture, Fishing and Food, Generalitat Valenciana.
    • Jucar River Basin Authority. Hydrological Planning Office and Automatic Service for Hydrological Planning (SAIH)
    • Excmo. Ayuntamiento de Utiel. Concejalía de Medio Ambiente
    • Excmo. Ayuntamiento de Caudete de las Fuentes
    • Bodegas IRANZO, Caudete de las Fuentes
    • Bodegas y Viñedos de Utiel
    • Bodega La Cubera, Utiel
    • Nicolás Guaita, Caudete de las Fuentes
    Acknowledgments
  • 45. Thank you for your attention 125 x 125 km 2 SMOS Validation Area 50 x 50 km 2 SMOS Reference Pixel 10 x 10 km 2 Control Area