GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, European Service for Ocean Colour User Consultation Meeting (Medspiration-5, GlobColour-2) GlobColour Overview and achievements after two years Odile Fanton d’Andon (ACRI-ST) Diagram/illustration Session 2 – GlobColour Progress 20 November

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, European Service for Ocean Colour User Consultation Meeting (Medspiration-5, GlobColour-2)  Background of GlobColour  Phase 1 achievements  Phase 2 achievements  Provision of a long time-series ( ) of consistently calibrated and merged global ocean colour products  Validation and characterisation performed with available in situ observations  Perspective : Pre-operational ocean colour service element of the future EU GMES Marine Core Service Outline of this presentation July 2002 October 2002

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20,  Satisfy emerging demand for validated merged ocean colour derived information  Demonstrate the current state of the art in merging together data streams from different ocean-colour sensors: MERIS (ESA), SeaWiFS (NASA), MODIS-AQUA (NASA), (Polder-Parasol CNES)  ESA DUE project i.e. driven by end users: IOCCG, IOCCP, UK Met-Office, … Context Objectives Background of GlobColour  Provide a long time-series (10 years) of ocean-colour information  Demonstrate a global NRT ocean-colour service based on merged satellite data  Put in place the capacity to continue production of such time series in the future and to prepare for full exploitation of Sentinel 3 (ESA)

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, CONSORTIUM ACRI-ST (France)Prime contractor / management Processor / Production University of Plymouth (UK)User requirements follow up/ design justification / merging ARGANS LIMITED (UK)New products / Evolution /merging NIVA (Norway)Validation (DDS) Brockman Consult (Germany)Tools development Web server ICESS (USA), DLR (Germany) & LOV (France) Scientific support Background of GlobColour ARGANS

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, GlobColour DUE project – 3 years - 3 phases Phase 1 (2006) : Demonstration of feasibility  Today : Second GlobColour User consultation at NIVA Phase 2 (2007) : Generation and validation of 10 year time series Phase 3 (2008) : Daily delivery of global merged ocean colour products  NRT demonstration  Delivery to operational oceanography user community Background of GlobColour Towards a sustainable European Ocean Colour service part of the future EU GMES Marine Core Service

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Users are always involved during the project for consultation, advice and final assessment User meeting at University of East AngliaKO+20: July 2007 User meeting at UK Met OfficeKO+16: Mar Participation in the GlobColour User Workshop 3 (ESRIN)KO+36: Nov Participation in the GlobColour User Workshop 2 (NIVA)KO+24: Nov User assessment of the Final Product Set (10 years)KO+23: Oct Participation in the end of phase 1 review (advisors to ESA) and GlobColour User Workshop 1 (LOV) User assessment of the Preliminary Product Sets (radiance and biophysical) and selection of final product KO+13: Dec Participation in the Critical Design ReviewKO+8: July 2006 Generation and review of Requirements Baseline Document, Design Justification File, and Validation Protocol KO+2: Jan User’s involvement Background of GlobColour

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Difficulties  Sensors are not created equal: different designs, calibrations, algorithms, accuracies,….  Large volumes of data to deal with  Merging procedure should not create biases, discontinuities, artifacts,… Phase 1 (2006) : Demonstration of feasibility

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20,  Sensor characterisation (continued in Phase 2) For validation / characterisation: DDS: Diagnostic Data Set Data Courtesy SeaPRISM [Giuseppe Zibordi, Brent Holben, Doug Vandemark] Phase 1 (2006) : Demonstration of feasibility see Samantha Lavender’s presentation

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Phase 1 (2006) : Demonstration of feasibility  Sensor characterisation (continued in Phase 2) Achievement: Statistical uncertainties have been derived and are used for merging

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Main modules:  Data acquisition  Pre-processing  Spatial binning  Temporal binning  Merging  QC Developing the system  Globcolour processor End 2006: System is ready for systematic production Phase 1 (2006) : Demonstration of feasibility

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, GlobCOLOUR Project European Node for global Ocean Colour Data access Data products Methods Data tools Calendar About the Project Workshops and forum The European Service for Ocean Colour GlobColour is an ESA Data User Element Project The GlobColour project is demonstrating an EO based service supporting global ocean carbon cycle research. Through this web portal, the project provides scientists with a long time series of consistently calibrated global ocean colour information.

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Merging recommendations: Normalized water-leaving radiances: - Statistics are slightly better when using the weighted average than the simple average - Use of the weighted average for the nLw’s Chlorophyll: - GSM01 provides the best fit to in-situ chlorophyll - It has the advantage of providing other products - Pixel-by-pixel error bars can be provided in the future - Produce also weighted average Chlorophyll CHL2 AVG Apr03 CHL1 GSM Apr03 Phase 1 (2006) : Demonstration of feasibility

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Phase 1 (2006) Demonstration of feasibility successfully achieved Presentation of the precursor service  First user’s workshop at LOV, Villefranche, 4-6 Dec. 2006

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20,  time series available at Phase 2 (2007) : Generation and validation of 10 year time series Phase 2 (2007) Provision of a long time-series ( ) SeaWiFS MODIS MERIS see Gilbert Barrot’s presentation

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Global ocean colour data set at 4.6 km resolution covering daily, weekly, monthly products: Chlorophyll concentration (Chla) Diffuse attenuation 490nm (K d 490) Total Suspended Matter CDM absorption (aCDM443) Particle backscattering coefficient (bbp443) Aerosol Optical Thickness (T865) Exact normalised water-leaving 412, 443, 490, 510, 531, 555, 620nm Water-leaving 670, 681, 709nm Data quality flags Cloud fraction Excess of radiance at ~ 555 nm (turbidity index) (EL555) Error estimates per pixel for each layer MODIS-only, MERIS-only see Gilbert Barrot’s presentation Phase 2 (2007) GlobColour products ( ) distributed to the users

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Some numbers.. More than 25 Tb of input data (level 2) 14 Tb of intermediate and output products 4.5 Tb of distributed data netCDF, JPG/PNG web, ftp, Google-Earth dedicated tools are available (ISIN-PC grids) All Google Earth tools are available (e.g. ruler, places name…) Phase 2 (2007) Provision of a long time-series ( )

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Applying the Validation protocol defined in Phase 1  Using: punctual in situ measurements and  time series obtained from long-term buoy measurements or from regular/ continuous cruises (e.g. ferrybox datasets)  Validation of FPS merged products: Focus on chlorophyll-a, diffuse attenuation coefficient, normalised water- leaving radiances (LwN).  Perspectives on error uncertainties (See A. Mangin/S. Maritorena talks) Phase 2 (2007) Validation

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Open ocean : see David Antoine presentation Phase 2 (2007) Validation - Based on the match up with the global data set of field data (Chl and nLw’s), the GlobColour FPS is validated. - The GlobColour FPS is definitely qualified and usable for operational uses, such as assimilation into global models (there is a pixel-by-pixel error bar delivered with the GSM Chl), or delivery of GMES services. N 175 R RMS 0.21 BIAS 0.04 N 162 R RMS 0.19 BIAS N 108 R RMS 0.14 BIAS 0.01 GSM AVW Error characterisation

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Phase 2 (2007) Validation Coastal waters : see Dominique Durand presentation A better in-situ dataset for coastal case 2 waters is needed (best results from Ferrybox data collection)! GSM01 merging algorithm seems quite robust over coastal waters GlobColour merged products show a potential for investigating seasonal to inter- annual variability in coastal zone: should be investigated further ! NIVA-FerryBox CHL monthly mean

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Inter-comparison with other similar initiatives (NASA, REASoN) : see Stephane presentation Phase 2 (2007) Validation

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Quality control and uncertainty estimation Add Sensor Error From Charact. & anc. data GlobColour The global OC data service in the European Marine Core Service Parallel & consistent with the Medspiration/GHRSST approach L3 Products per sensor netCDF format Input L2 data of Varied format & with no errors estimates Merged Products with error estimates netCDF format Data merging ObservationsApplications See session 4 tomorrow

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Thank you for your attention

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Monthly Chlorophyll May 2006

GlobColour overview and achievements after two years Globcolour / Medspiration user consultation, Nov , 2007, Oslo Session 2 – Progress with the GlobColour Service – November 20, Error estimates at pixel level (%) Chla – May % 50% 0%