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Sentinel-3 Mission Requirements: An Operational Oceanography and Global Land Surface Mission for GMES

Sentinel-3 Mission Requirements: An Operational Oceanography and Global Land Surface Mission for GMES . Mark Drinkwater S-3 Mission Scientist . ESA GMES Space Segment. Definition of 5 series of satellite missions: Sentinel 1: C-band SAR (possible 2 satellite constallation)

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Sentinel-3 Mission Requirements: An Operational Oceanography and Global Land Surface Mission for GMES

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  1. Sentinel-3 Mission Requirements: An Operational Oceanography and Global Land Surface Mission for GMES Mark Drinkwater S-3 Mission Scientist GMES Collocation Meeting 4 - Dec 6-8, 2005

  2. ESA GMES Space Segment • Definition of 5 series of satellite missions: • Sentinel 1: C-band SAR (possible 2 satellite constallation) • Sentinel 2: Super-spectral Imager at 10-30 m resolution • Sentinel 3: Altimeter plus multi-spectral Vis/IR imager • Sentinel 4: Atmosphere Monitoring from geostationary orbits • Sentinel 5: Atmosphere Monitoring from low-earth orbits GMES Collocation Meeting 4 - Dec 6-8, 2005

  3. GMES Initial Services • NWP & Hurricane Forecasting have specific F.D. requirements • Land surface requirements are not primary mission drivers GMES Collocation Meeting 4 - Dec 6-8, 2005

  4. User Service Needs - Overview • The economic and environmental importance of the oceans dictate that marine GMES applications are initially focused on: • coastal zones and open ocean environment monitoring • fisheries and vessel monitoring • maritime traffic and security • sea ice/oil spill monitoring • Primary actors establishing GMES operational ocean services require access to: • Regular, routine, sustained source of EO satellite data products on a variety of levels (Fast Delivery, Level 1b, 2, Level 3) • In situ data • Operational ocean forecasts as the basis for ocean “state” estimation (incl. satellite/in-situ data assimilation) • Mercator (F), FOAM (UK), MFS (I), TOPAZ (N) • Historical reprocessed EO data for establishing climatologies, and probability and exceedence statistics (for risk assessment) • Long-term validation and QA of data sets GMES Collocation Meeting 4 - Dec 6-8, 2005

  5. Considerations for S-3 • Sentinel-3 shall facilitate operational continuity of core operational ocean services currently based on: • T/P Jason, ERS-2, and Envisat radar Altimetry • MERIS, MODIS, SeaWIFS Ocean Colour • (A)ATSR, MODIS, and AVHRR surface temperature • Timeliness and frequency of products are key consideration • Sentinel-3 inherits global, frequent coverage, low-res. land requirements from Sentinel-2 • Sentinel-3 is entrusted with the continuity of provision of optical data at low resolution (100-1000m), guaranteeing the operational continuity of the MERIS VGT and (A)ATSR data streams and land services based on these products GMES Collocation Meeting 4 - Dec 6-8, 2005

  6. Requirements Definition (1) - Sources • GMES Service Elements: • ROSES, CoastWatch • Icemon, Northern View • GMFS, Forest Monitoring • EC FP5/6/7 & ESA (DUP/DUE) Projects: • HABILE, DISMAR, Oceanides, GAMBLE, MFSTEP, MERSEA, DAMOCLES , GEOLAND, Carbo Europe, etc. • Medspiration, EMOFOR, GlobICE, GlobColour, GlobCarbon, GlobSCAR, DesertWatch, etc. • NWP & Operational Forecasting: • Eumetsat OSI-SAF, ECMWF, UKMO/NCOF, DMI, Met.No, KNMI, Meteo France, Mercator Ocean, etc. • ESA Roadmap Study with modellers and industry: • “Definition of Scenarios and Roadmap for Operational Oceanography” (2003) - see http://ocean.cls.fr/roadmap • Technical Studies: • Internal Ocean Watch Design Concept Study (CDF-10(A), 2001) • Visual Imager (VIRI) concepts studies (2001) • Future altimeter concepts studied (2002) GMES Collocation Meeting 4 - Dec 6-8, 2005

  7. Requirements Definition (2) - Steps • User Service Needs - Operational Req. • User Requirements Documents for GSE studies • Must include relevant needs of NWP, FP5/6/7, ESA DUE etc. • Operational Product/Parameter Needs • e.g. Chla to n% accuracy, SST accurate to 0.3K abs. & 0.1K/decade • Measurement Requirements • parameters/timeliness/frequency/etc.. • bands, swath width, resolution sampling requirements/orbits etc.) • Basic sensor requirements • e.g. Alt, MERIS follow-on, AATSR follow-on • Ground Segment Requirements • timeliness/data latency • NRT (<3 h) data flow to the product service providers • System Requirements • instrument specifications (e.g. PRF/accuracy/sensitivity) • Mass/Power launch constraints; Downlink rates etc URD MRD SRD GMES Collocation Meeting 4 - Dec 6-8, 2005

  8. Operational Oceanography GMES Collocation Meeting 4 - Dec 6-8, 2005

  9. Observational Requirements • Sea surface topography (SSH) and, significant wave height (SWH) over the global ocean to an accuracy and precision equivalent to or better that of Envisat RA-2. • Surface temperature (SST) determined globally to an equivalent accuracy and precision as that presently achieved by A/ATSR (i.e. <0.3 K), at a spatial resolution of 1 km. Coastal zone waters and global land require an increased resolution of < 300 m. Dynamic range good enough for the detection of fires without saturation • Visible and Infrared radiances (“Surface Colour”) for land and for oceanic and coastal waters, determined to an equivalent level of accuracy and precision as MERIS data • Complete Earth coverage in 1 to 3 days, and co-registration of Color and Temperature measurements • NRT data delivery (< 3 hours) for fundamental products GMES Collocation Meeting 4 - Dec 6-8, 2005

  10. Parameter Requirements • Ocean Alt: • SSH, SWH, Wind, Currents • Sea-ice thickness • Ocean Surface Colour • Cla, PFTs, HAB, Transparency, Sediment loading, Turbidity • Land Surface Colour • NDVI, MGVI, MTCI • Sea Surface Temp • Land Surface Temp • Atmospheric • Aerosols • Clouds GMES Collocation Meeting 4 - Dec 6-8, 2005

  11. Payload Requirements • An advanced Radar Altimeter concept (with Envisat RA-2 and/or CryoSat baseline altimeter performance). • Multi-channel optical imager (VIS, IR) either as one instrument or separate for Ocean Colour and SST operational applications. Shall provide VEGETATION continuity. • Appropriate system components for necessary atmospheric water vapour, aerosol, and ionospheric corrections. • Appropriate system components for accurate/precise orbit determination (i.e 3-d position), and on-orbit pointing knowledge. GMES Collocation Meeting 4 - Dec 6-8, 2005

  12. Altimetry Requirements • Strong heritage from Poseidon/Jason/CryoSat developments • To continue the role of ‘high inclination’ RA fulfilled by past ESA instrument • To add (as far as practical) observational capability of Cryosat • Requirements: GMES Collocation Meeting 4 - Dec 6-8, 2005

  13. Ocean & Land Colour (OLC) • Heritage from MERIS + VGT continuity + Atmos. correction channels • Requirements: • 15 Baseline channels (incl. all MERIS & VGT legacy channels) • Mission Drivers: • Sun-glint mitigation • 1-3 day revisit & global land coverage GMES Collocation Meeting 4 - Dec 6-8, 2005

  14. Sea & Land Surface Temperature (SLST) • Heritage from AATSR, dual-view required for aerosol corrections • Requirements: • 4 Legacy IR channels – identical to AATSR • Mission Drivers: • Swath width & temporal revisit • Maintenance of gold standard (i.e. calibration std.) • Collocation of SLST and OLC - for benefit of atmos. corrections GMES Collocation Meeting 4 - Dec 6-8, 2005

  15. Sentinel – 3 Summary • This mission is dedicated to satisfy data continuity requirements for robust provision of: • operational oceanography services • global land surface vegetation monitoring related services • Sentinel-3 is a mission concept which shall include the following elements: • High-inclination orbit altimetry (Alt) • Low resolution, multi-spectral Visible and infrared (VIRI) sensor for ocean/land colour, and ocean and land surface temperature • Currently Sentinel-3 is in its requirement consolidation phase of its Definition Study (expected date of completion: Sept. 2006) • PM2 – AAS Cannes 5-6 December • Requirements consolidation by: GMES Collocation Meeting 4 - Dec 6-8, 2005

  16. GMES Collocation Meeting 4 - Dec 6-8, 2005

  17. Altimetry Users 1/6 Marine operations Page 21

  18. Altimetry Users 2/6 Security at sea Page 22

  19. Altimetry Users 3/6 Environment security Page 23 Pollution monitoring

  20. Altimetry Users 4/6 Sustainable exploitation of marine resources Page 24

  21. Altimetry Users 5/6 Climate and Ocean Research/Monitoring Page 25

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