23 rd CEOS Plenary I Phuket, Thailand I 3-5 November 2009 Co lead : Francois ParisotEUMETSAT Stan Wilson NOAA Ocean Surface Topography Constellation

23 rd CEOS Plenary I Phuket, Thailand I 3-5 November Status of the Constellation Actions AR-09-02a_15 and 17 Altimeter missions in orbit – Jason 2: All products now available to all users. OSTST meeting in Seattle has confirmed the excellent quality, availability and timeliness of products, Jason-1 orbit has been changed to optimise coverage and benefits of the missions – ENVISAT – performance OK Missions in development – CryoSat-2 – Good progress for launch in early 2010 (February 28 th ) – SARAL – Launch second semester 2010 – Discussion CNES / ISRO / EUMETSAT for operational delivery of data to users Pending approval by EUMETSAT Member States, EUMETSAT will process and disseminate NRT product in synergy with what is done on Jason-2 – Sentinel-3A (2013) and -3B approved at last ESA Ministerial Council Sentinel 3A Phase C/D studies are progressing well : launch date April 2013 Contract for Sentinel 3B procurement is planned to kick-off before end of the combined S3A/S3B production schedule will be further optimized for cost/efficiency. Launch is intended for 2017

23 rd CEOS Plenary I Phuket, Thailand I 3-5 November Status of the Constellation Mission in development (con’t) – HY-2A Launch planned in late 2010 or early 2011 CNES/SOA negotiations, DORIS for POD, access to DATA NOAA and EUMETSAT have also approached SOA to seek operational access to data Missions in planning – Jason-3 Europe: Programme opened to subscription at EUMETSAT, entry into force expected by the end of the year, U.S.: Jason-3 has been included as proposed in the Appropriation Bill for both Houses of Congress and is awaiting approval by the Congress and President – Jason-CS (Continuity of Service) ESA, EC, EUM are consolidating programmatic and funding approach for a series of Jason- 3 Follow-on satellites – GFO-2 The US Navy appears to be close to getting approval for its GFO-2 – On going studies for new altimeter concepts CNES, NASA, ESA running concept feasibility studies

23 rd CEOS Plenary I Phuket, Thailand I 3-5 November Ocean Surface Topography Constellation Roadmap Jason-1 Fr./USA ENVISAT ESA Reference Mission, SSH from low inclination non sun-synchronous orbit, CRYOSAT-2 ESA SSH from high-inclination sun-synchronous orbit Jason-2 Europe/USA Jason-3 Europe/USA Jason-CS Future missions SWOT/WaTER-HM USA/Europe Saral/AltiKa India/France Jason evolution demonstrator In orbitApprovedPlanned/Pending approval Needed HY-2B, -2C, -2D HY-2A China GFO-2 (US Navy) Non sun-sync. mission Sentinel-3C, -3D Sentinel-3A, 3B Europe

23 rd CEOS Plenary I Phuket, Thailand I 3-5 November Next 15 Years of Satellite Altimetry Taking into account – The successful launch of Jason-2/OSTM in June 2008, and the continuing operation of Jason-1 and Envisat, these missions working as a Constellation – The recommendations from the ESA-CNES Symposium held in Venice, Italy, in March 2006 – Their refinement with regard to sea level monitoring at the UNESCO Workshop held in Paris, France, in June 2006 – The additional recommendations for the user workshop held in January 2008 in Assmannshaussen, Germany EUMETSAT and NOAA have initiated a study which aims at using these series of recommendations based on well-established user requirements to derive an upper-level Requirements Document that would guide future programme planning for the operational oceanography user community in the 15-years to come The study was led by the French company CLS (Dr P. Escudier) with the contribution of Dr J.-L. Fellous (co-president of JCOMM). Both experts have been deeply involved in past altimetry missions over the last 25 years.

23 rd CEOS Plenary I Phuket, Thailand I 3-5 November Study content and approach The study included extensive consultation with other experts in the various application fields of altimetry, e.g.: Second draft of the document was released in April and sent Mid-May to a wide panel of users and experts from implementing agencies including ISRO and SOA. The comments were reviewed during Ocean Surface Topography Science Team meeting in Seattle, WA, June 22-24, – New title : Ocean Surface Topography Constellation User Requirement Document – Introduction of “Guidance” concept, addressing design point that are key to meet the requirements – More focused on Ocean as primary application as opposed to secondary applications (coastal, ice, geodesy…) A side meeting has been organized during the OceanObs09 Conference in Venice The document is now available !

23 rd CEOS Plenary I Phuket, Thailand I 3-5 November Requested SIT and CEOS Support Continued support to secure funding for Jason-3 in time to provide continuity of the Jason-quality data stream, in addition to recurrent units for high-inclination Sentinel-3 mission Engage key officials of the State Oceanic Administration to collaborate in altimetry - to extend data availability beyond that available from existing constellation