1. GEO ADC meeting, Tokyo, Japan, 14-15 May 2007 Slide # 1 DA-07-03 DA-07-03 Virtual Constellations Ivan Petiteville, CEOS GEO ADC Meeting, Tokyo, Japan, 14-15 May 2007

2. GEO ADC meeting, Tokyo, Japan, 14-15 May 2007 Slide # 2 Task Description Development of Virtual Constellations within CEOS framework in consultation with User Communities Objectives: –Improve the temporal, spatial and spectral coverage & resolution] as well as data management and dissemination –Satisfy the requirements and objectives of the GEO SBAs

3. GEO ADC meeting, Tokyo, Japan, 14-15 May 2007 Slide # 3 Current 4 Virtual Constellations Precipitation Constellation: –strengthen international cooperation of space-based observations of precipitation, including realization of the GPM mission (AR-06-10) Land-Surface Imaging Constellation: –ensure the relevant synergy with High Resolution Multispectral Imager Continuity (AR-06-09); Ocean Surface Topography Constellation: –ensure continuity of Sea Level measurement in accordance with GCOS requirements (CL-06-02); Atmospheric Composition Constellation: –address many of the climate community’s needs for atmospheric observations (CL-06-02);

4. GEO ADC meeting, Tokyo, Japan, 14-15 May 2007 Slide # 4 Task particularities –Initial interaction with the User Community for the establishment of the user needs and definition of product requirements.  UIC should provide oversight of the establishment of user needs and definition of product requirements –Establishment of standards:  data interoperability (sensor inter-calibration, data formats, interoperable catalogs metadata,..), –Implementation of an interoperable system:  mission planning, missions definitions and operations, data archiving, access, data dissemination,… …

5. GEO ADC meeting, Tokyo, Japan, 14-15 May 2007 Slide # 5 Main Outputs & Deliverables Assessment of existing and planned systems and gap analysis As needed, consolidation of user needs and definition of product requirements for operational observations through communication with key user groups (involvement of UIC) Demonstration of the value of the projected Constellations for GEO Societal Benefit Areas Identification of contributions to comprehensive, sustained observing systems Establishment of CEOS Constellation standards across the GEO SBAs Demo for the GEO SummitDemo for the GEO Summit

6. GEO ADC meeting, Tokyo, Japan, 14-15 May 2007 Slide # 6 Calendar for 2007 Q1-07Start Q1-07Establish supporting guidance and consultation structures Q1-07Approve prototype proposals and develop work plan for each constellation study Q3-07Prototype study reports submitted. Constellation Process Paper finalized Q4-07Presentation of first achievements at GEO-IV and GEO Summit Q4-09End

7. GEO ADC meeting, Tokyo, Japan, 14-15 May 2007 Slide # 7 Task Status (1/3) Concept endorsed by CEOS Plenary (Nov. 2005) Currently, one of the 3 major CEOS activities DA-07-03 Task proposed by CEOS for the GEO 2007-2009 WP. –CEOS volunteer to be both Lead and Point of Contact

8. GEO ADC meeting, Tokyo, Japan, 14-15 May 2007 Slide # 8 Task Status (2/3) One system engineering team (SEO) led by NASA + 4 Constellations teams –Atmospheric Composition (NASA/ESA) –Precipitation (JAXA/NASA) –Ocean Surface Topography (NOAA/EUMETSAT) –Land Surface Imaging (USGS/ISRO)

9. GEO ADC meeting, Tokyo, Japan, 14-15 May 2007 Slide # 9 Task Status (3/3) Regular meetings and telecons –Several meetings of CEOS experts in 2006 and several other planned in 2007 –One of the main topics at CEOS SIT (Jun. 2007) meetings and at next CEOS Plenary (Nov. 2007) –Teleconferences every 2 to 4 weeks between Constellation Team Leaders and SEO team CEOS Demo for the GEO Summit being defined –Open issue: what is the procedure put in place by the GEO SEC to be followed by all candidates for demos ?