1. Committee on Earth Observation Satellites Chu Ishida, JAXA Plenary Agenda Item 27 29 th CEOS Plenary Kyoto International Conference Center Kyoto, Japan 5 – 6 November 2015 Water Strategy Implementation Study Team Report

2. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 2 CEOS 2015-2017 Work Plan Objective/D eliverable Projected Completion Date Background InformationResponsible CEOS Entity WAT-1: Developmen t of a CEOS response to the GEOSS Water Strategy. Q4 2015 The GEOSS Water Strategy includes a number of recommendations that deal with satellites. In 2015, CEOS will assess the feasibility of CEOS Agencies to contribute to the development of the GEOSS Water Implementation Plan, and to define the potential CEOS contribution to the implementation of the GEOSS Water Strategy. The establishment of an ad-hoc Initial Study Team to progress this work was agreed at the 28th CEOS Plenary Meeting, with an initial report to be provided at SIT-30. Ad-Hoc Water Strategy Implementation Study Team

3. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 3 Required decision WSIST requests CEOS Plenary : - to endorse the draft CEOS Response to the GEOSS Water Strategy Recommendations, including one year extention of the WSIST to conduct Water Constellation feasibility study.

4. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 History Oct 2012 : CEOS Plenary#26 endorsed CEOS participation to the GEOSS Water Strategy development Jan 2014: GEOSS Water Strategy was presented at the GEO Ministerial Conference Sep 18, 2014: CEOS SIT TW agreed that a small Water Strategy Implementation Study Team (WSIST) be set up. October 2014, CEOS Plenary#28, endorsed the WSIST and agreed on action to prepare TOR and membership. April 2015, interim report on the WSIST was made at CEOS SIT. June 2015, draft consolidated CEOS reponse was presented at IGWCO- COP meeting in Collage Park, US. Sep 2015, CEOS SIT Technical WS reviewed the CEOS Response to GEOSS Water Strategy Recomendations.

5. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 The GEOSS Water Strategy updates the status of observational capabilities of priority water variables, information systems, and capacity building. Priority water variables are; - Water vapor and clouds - Precipitation - Evaporation and Evapotranspiration - Soil moisture - River discharge, Surface water storage - Groundwater - Cryosphere variables - Water quality In addition, the report identifies a number of recommendations for action by GEO Members and POs. Summary of GEOSS WSR 5

6. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 GEOSS WS contains 58 recommendations, 22 of which have been identified relevant for CEOS to address; A.Enhancing User Engagement (8) B. Expanding data acquisition strategies (3) CEOS related Total 22 C. Advancing satellite data acquisition (10) 10 D. Strengthening in-situ data acquisition (10) 2 E. Encouraging and conducting research and product development (16) 7 F. Facilitating data sharing and common standards (7) 2 G. Expanding capacity development (4) TOTAL 58 1 GEOSS WSR Recommendations 6

7. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 WSIST ToR Objective: to define the potential CEOS contribution to the implementation of the GEOSS Water Strategy Report (WSR) Methodology: 1.elect a Chairperson 2.review the 22 recommendations and identify the contributions that CEOS proposes to provide in response to the recommendation 3.for each proposed contribution, identify the associated actions and propose CEOS organizational mechanisms for both action implementation and action monitoring 4.present the proposed contributions to SIT-30 (Mar 30-Apr 2, Paris) 5.Forward the consolidated CEOS response to IGWCO in May 2015

8. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 WSIST Members CEOS Water Strategy Implementation Study Team Bojan Bojkov (WGCV/ESA) Selma Cherchali (CNES) Jared Entin (NASA) Ralph Ferraro (NOAA) Bob Kuligowski (NOAA) Kerry Sawyer (NOAA) John W. Jones (USGS) Marie-Josee.Bourassa (CEO/CSA) Arnold Dekker (CSIRO) Jono Ross (DCEO/GA) Chu Ishida (JAXA) Special thanks for their great contributions !

9. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 9 WSIST activities 1 st WSIST Telecon, January 13 (Tue), 2015 2 nd WSIST Telecon, February 24 (Tue), 2015 3 rd WSIST Telecon, March 25 (Wed), 2015 WSIST side meeting at SIT-30, March 30, 2015 4 th WSIST Telecon, April 30, 2015 5 th WSIST Telecon, July 23, 2015 6 th WSIST Telecon, Aug 27, 2015 WSIST side meeting at SIT TWS, Sep 16, 2015

10. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 Proposed Major CEOS actions CEOS takes the lead in addressing “Advancing satellite data acquisition” C1: FS on Water Constellation C2. C3 : participation in GEO water vapor and cloud activity C4, C5: participation in the development of precipitation white paper C6: coordinate LST missions toward improved ET estimation C7, C8, C9 : CEOS agency activities already cover these. C10: FS on hyperspectral satellite mission on water quality measurement CEOS supports external activities, including: E5: define soil texture map requirements and communicate them to IGWCO E8: participate in GEO activities to define a global framework for surface water storage monitoring

11. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 11 NEXT Steps If CEOS Plenary endorses the WSIST report, next steps will be to search for Chairperson to serve for extended WSIST firm up approach and participation in Water Constellation FS to implement proposed CEOS actions in the report in cooperation with WGs and VCs. to report progress at next CEOS SIT meeting.

12. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 12 Water Constellation FS GEO Water Strategy Recommendation C1: The feasibility of developing a Water-Train satellite constellation should be assessed. This suite of satellites would be modelled after the A-Train, providing a space segment of an observation system that would capture all fluxes and stores of the water cycle using a diverse suite of platforms and instruments. This system would operate as a Virtual Water Cycle Constellation. The A-Train

13. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 13 FS Approach  Detail to be agreed by the extended WSIST – with guidance from Plenary  6 priority parameters the focus: precipitation, soil moisture, evapotranspiration, groundwater, river discharge, water storage  Establish a clear sense of priorities and socio-economic benefit variability across combinations of parameters and variations in measurement characteristics (spatial, spectral, temporal frequency etc). Essential to have solid foundation of community-validated requirements to inform space infrastructure analysis  best use of existing requirement work (eg post-GPM, GCOS ECV)  strong user community participation

14. 29 th CEOS Plenary Kyoto, Japan 5 – 6 November 2015 14 FS Approach  Establish a full understanding of current and planned capabilities – including impact of next-gen geostationary  Postulate benefits from different levels of coordination (orbits, co-flights, new capabilities, GEO-LEO synergies…)  ROM comparison of status quo cost-capability versus several (simple) model scenarios for ‘Water Constellation’