1 Istanbul, 10-11 November 2011. Joint Research Centre, European Commission, Ispra, Italy AOP Measurements and NN Bio-Optical Algorithms for the Western.

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Presentation transcript:

1 Istanbul, November Joint Research Centre, European Commission, Ispra, Italy AOP Measurements and NN Bio-Optical Algorithms for the Western Black Sea Giuseppe Zibordi, Jean-Francois Berthon, Davide D’Alimonte and Elisabetta Canuti

2 In-Water Radiometry G.Zibordi, F. Mélin, S. B. Hooker, D. D’Alimonte and B. Holben. IEEE Transactions in Geoscience and Remote Sensing, 42: , ~0.543 Fundamentals Courtesy of S. Mc Lean Satlantic Inc., Halifax Extrapolation interval z1z1 z2z2

3 In-Water Radiometry: Products Water leaving radiance [ mW cm -2  m -1 sr -1 ] Normalized L W [ mW cm -2  m -1 sr -1 ] Remote sensing reflectance [ sr -1 ] Q-factor at nadir [ sr ] Irradiance reflectance [-] Diffuse attenuation coefficient [ m -1 ]

4 L WN Uncertainties (in-water) SourceL WN Absolute calibration2.8 Sensitivity change0.3 Correction C f/Q E d (0 + )1.6 E0E Environmental effects Quadrature sum

5 BiOMaP measurement stations ( ) G. Zibordi, J.-F. Berthon, F. Mélin and D. D’Alimonte. Cross-site consistent in situ measurements for satellite ocean color applications: the BiOMaP radiometric dataset. Remote Sensing of Environment,115, 2104–2115, BiOMaP measurements are produced applying cross-site identical and consolidated: technology, measurement and calibration protocols, processing codes and quality assurance criteria. BiOMaPShips

6 BiOMaP radiometric data form various European Seas G. Zibordi, J.-F. Berthon, F. Mélin and D. D’Alimonte. Cross-site consistent in situ measurements for satellite ocean color applications: the BiOMaP radiometric dataset. Remote Sensing of Environment,115, 2104–2115, 2011.

7 Tri-Dimensional Mapping of BiOMaP radiometric data G. Zibordi, J.-F. Berthon, F. Mélin and D. D’Alimonte. Cross-site consistent in situ measurements for satellite ocean color applications: the BiOMaP radiometric dataset. Remote Sensing of Environment,115, 2104–2115, 2011.

8 Tri-Dimensional Mapping of BiOMaP radiometric data G. Zibordi, J.-F. Berthon, F. Mélin and D. D’Alimonte. Cross-site consistent in situ measurements for satellite ocean color applications: the BiOMaP radiometric dataset. Remote Sensing of Environment,115, 2104–2115, 2011.

9 SeaWiFS –BiOMaP Match-Ups (including Black Sea) G. Zibordi, J.-F. Berthon, F. Mélin and D. D’Alimonte. Cross-site consistent in situ measurements for satellite ocean color applications: the BiOMaP radiometric dataset. Remote Sensing of Environment,115, 2104–2115, 2011.

10 MODIS –BiOMaP Match-Ups (including Black Sea) G. Zibordi, J.-F. Berthon, F. Mélin and D. D’Alimonte. Cross-site consistent in situ measurements for satellite ocean color applications: the BiOMaP radiometric dataset. Remote Sensing of Environment,115, 2104–2115, 2011.

Bio-optical models: the tools to convert satellite atmospherically corrected data into high-level products Seawater Optically Significant Components (Phytoplankton biomass, Suspended & Dissolved Matter). Satellite derived marine signal (“Reflectance” R rs )statistical Chla~f(R rs (  ),R rs (  )) semi-analytical a,b b ~  (R rs ( ))Chla~  (, a, b b )

D. D’Alimonte, G. Zibordi, J.-F. Berthon, E. Canuti and T. Kajiyama. Bio-optical Algorithms for European Seas: Performance and applicability of Neural-Net Inversion Schemes. JRC Scientific and Technical Report EUR EN (2011). Schematic of MLP with two layers of adaptive parameters

D. D’Alimonte, G. Zibordi, J.-F. Berthon, E. Canuti and T. Kajiyama. Bio-optical Algorithms for European Seas: Performance and applicability of Neural-Net Inversion Schemes. JRC Scientific and Technical Report EUR EN (2011). Performance of the BiOMaP MLP NN for various ocean color products

1.Expand current AOP Analysis including Data from the NATO Project; 2.Investigate AOP Features at Sub-Basin Level; 3.Investigate Commonalities in Bio-Optical Features between Black Sea and other EU Seas. Future developments