1. GOV- CLIVAR workshop, 13 th -17 th June OSEVal Task Team WorkPlan Gilles Larnicol (CLS), Peter R. Oke (CSIRO)

2. GOV- CLIVAR workshop, 13 th -17 th June Outline Introduction- Reminder Workplan with the 5 key activities - routine monitoring of the GOOS - delayed mode OSE/OSSE - design of new/future observing system - provision of observation Impact statement - capacity building Presentation not focused on the description of the main achievements

3. GOV- CLIVAR workshop, 13 th -17 th June GOV OSEVal-TT Objectives Provide specific requirements for ocean observations (GOOS) to agencies and organisations in charge of global and regional ocean observing systems. Maintain and develop international collaboration among the ocean monitoring and forecasting centers  organisation of regular meetings and workshops. Focused on short range forecasting of the mesoscale but do not exclude applications related to seasonal forecasting. Links with other communities (as climate) are important to ensure consistency of the requirements

4. GOV- CLIVAR workshop, 13 th -17 th June GOV OSEVal-TT organisation Co-leaders: Peter Oke (CSIRO), Gilles Larnicol (CLS) Members: Matthew Martin (IV-TT Co-Chair, UKMet); Laurent Bertino (NERSC); Pavel Sakov (NERSC); Avichal Mehra (NOAA); Yosuke Fujii (JMA/MRI); Gary Brassington (ETOOFS Chair, BoM); Pat Hogan (NRL); Anthony Weaver (CERFACS); Magdalena Balmaseda (ECMWF); Villy Kourafalou (UMiami) ; Daniel Lea (UKMet); Jim Cummings (NRL) Associate members: Andreas Schiller (GODAE OceanView Co-Chair, CSIRO); Eric Dombrowsky (GODAE OceanView Co-Chair, Mercator); Eric Lindstrom (OOPC Chair, NASA); Fabrice Hernandez (IV-TT Co-Chair, Mercator)

5. GOV- CLIVAR workshop, 13 th -17 th June Work Plan 1 st GODAE OSEVal-TT meeting (november 2007, Unesco, Paris) 2 nd GOV OSEVal-TT meeting (June 2009, CLS, Toulouse)  One outcome of the meeting was a first draft of the work plan GOVST meeting (Tokyo, Nov 2010 )  Work plan has been presented and revised See GOV_Work-Plan-draft-v6.1.3.doc document  5 key activities has been proposed

6. GOV- CLIVAR workshop, 13 th -17 th June GOV OSEVal-TT Key tasks Routine Monitoring of the GOOS Routine Monitoring of the GOOS Delayed-mode OSEs and OSSEs for short-range and seasonal forecast systems Design and evaluation of new and future observation system components Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Capacity Building

7. GOV- CLIVAR workshop, 13 th -17 th June GOV OSEVal-TT Key tasks Routine Monitoring of the GOOS Routine Monitoring of the GOOS Delayed-mode OSEs and OSSEs for short-range and seasonal forecast systems Design and evaluation of new and future observation system components Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Capacity Building

8. GOV- CLIVAR workshop, 13 th -17 th June Delayed mode OSE/OSSE for short range and seasonal forecast systems Objective: Perform in depth OSE/OSSE studies to assess the impact of the different observing systems altimeter constellation, in-situ (ARGO, drifters, XBT, etc...), high resolution SST Aim of this activity is to help to the coordination of the different initiatives through the GOV OSEVal-TT workshop and to provide guidance for the design of the OSE/OSSEs

9. GOV- CLIVAR workshop, 13 th -17 th June Delayed mode OSE/OSSE for short range and seasonal forecast systems Guidance identified during the last meeting: Time period: Impact of altimeters: 2003- 2006 (4 altimeters) Impact of ARGO: after 2004 mesoscale: 2008 seasonal studies:2004-2008 Definition of common diagnostics strong link with Intercomparison and validaton TT (L4 metrics) This kind of studies require a lot of resources (human and computer) if we want a minimum of coordination inside the TT, studies need to be planned

10. GOV- CLIVAR workshop, 13 th -17 th June Delayed mode OSE/OSSE for short range and seasonal forecast systems Define priority : Design and Assessment of a given observing system which altimeter constellation ? role of specific altimeter mission (ex: Jason-1 interleave,...) Argo: revisite the 3°x3° sampling, need to have deep Argo floats ? Assessment of a given data product L2, L3, L4 for SST, surface topography which product to use ? what is the impact of intercalibration/homogeneisation ?

11. GOV- CLIVAR workshop, 13 th -17 th June Delayed mode OSE/OSSE for short range and seasonal forecast systems Magdalena Balmaseda: The new ORA-S4 ECWMF ocean re-analysis Yosuke Fujii: OSSE for seasonal/decadal prediction Peter Oke: Design and Assessment of the australian integrated Marine Observing system Stephanie Guinehut: Combination of in-situ and satellite observations to monitor rhe Global Ocean,State Vladimir Stepanov (Keith Haines): The impact of EN3 and RAPID data assimilation on the change of heat balance in the Atlantic Andy Moore: Assessing the information content and impact of Observations on Ocean circulation estimated using 4D-Var Magdalena Balmaseda: The new ORA-S4 ECWMF ocean re-analysis Yosuke Fujii: OSSE for seasonal/decadal prediction Peter Oke: Design and Assessment of the australian integrated Marine Observing system Stephanie Guinehut: Combination of in-situ and satellite observations to monitor rhe Global Ocean,State Vladimir Stepanov (Keith Haines): The impact of EN3 and RAPID data assimilation on the change of heat balance in the Atlantic Andy Moore: Assessing the information content and impact of Observations on Ocean circulation estimated using 4D-Var

12. GOV- CLIVAR workshop, 13 th -17 th June GOV OSEVal-TT Key tasks Routine Monitoring of the GOOS Routine Monitoring of the GOOS Delayed-mode OSEs and OSSEs for short-range and seasonal forecast systems Design and evaluation of new and future observation system components Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Capacity Building

13. GOV- CLIVAR workshop, 13 th -17 th June Design and evaluation of new/future Observing system component Similar to the previous task but specific studies dedicated to new and/or future observing systems Essentially based on OSSEs - SWOT But also OSEs for assessing the impact of very recent data (means with small data set) - Cryosat-2 - SMOS - Gliders -...  not in depth studies but crucial  Reactivity needed !!!

14. GOV- CLIVAR workshop, 13 th -17 th June Design and evaluation of new/future Observing system component Clement Ubelmann: OSSEs to evaluate the impact of future SWOT assimilated data in regional coastal model Gilles Larnicol: New diagnostics to assess the impact of satellite constellation for (sub)mesoscale applications Clement Ubelmann: OSSEs to evaluate the impact of future SWOT assimilated data in regional coastal model Gilles Larnicol: New diagnostics to assess the impact of satellite constellation for (sub)mesoscale applications

15. GOV- CLIVAR workshop, 13 th -17 th June GOV OSEVal-TT Objectives Routine Monitoring of the GOOS Routine Monitoring of the GOOS Delayed-mode OSEs and OSSEs for short-range and seasonal forecast systems Design and evaluation of new and future observation system components Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Capacity Building

16. GOV- CLIVAR workshop, 13 th -17 th June Provide illustrations/arguments/requirements for short term political/technical decision - contribute to assess the observing system status - ensure that GODAE needs has been taken into account where are the gap in Argo coverage ? what data are looking suspect ? (pb in the Argo pressure sensor,...)  black/grey list Better understand how to improve the monitoring and forecasting centers how can we get more information from observations? better assimilation procedures Routing Monitoring of the GOOS

17. GOV- CLIVAR workshop, 13 th -17 th June Routing Monitoring of the GOOS Performance and evaluation of Near-Real-Time OSEs (NRT OSEs) When: what data to with-hold: Jan 2011 Argo Feb 2011 XBT Mar 2011 TAO Apr 2011 Jason-2 May 2011 All altimeters Jun 2011 AVHRR Analysis of Class 4 metrics The class 4 are generated and will be analysed to quantify the impact of each type of observations Work jointly pursue with the InterComparison and Validation TT.

18. GOV- CLIVAR workshop, 13 th -17 th June How could we perform routine monitoring? Conventional Observing System Experiments (OSEs): - Difficulty : expensive to perform routinely Routine inter-comparisons of diagnostics: - The class 4 are generated and will be analysed to quantify the impact of - - each type of observations Work jointly pursue with the InterComparison and Validation TT  quarterly/monthly/weekly basis (TBD) Analysis sensitivity: –Degre of freedom of signal Forecast sensitivity –readily applied to adjoint-based assimilation systems –when we perturb “obs A” how much did the forecast change

19. GOV- CLIVAR workshop, 13 th -17 th June Routing Monitoring of the GOOS Daniel Lea: Foam Observing system evaluation (OSE) experiments in near real time Daniel Lea: Foam Observing system evaluation (OSE) experiments in near real time Jan 2011 : Argo : Feb 2011: XBT : UKMet Mar 2011: TAO : UKMet Apr 2011: Jason-2 : UKMet, (JMA) May 2011: All altimeters : UKMet, (JMA) Jun 2011: AVHRR : UKMet Juil 2011 : Argo : Ukmet

20. GOV- CLIVAR workshop, 13 th -17 th June GOV OSEVal-TT Objectives Routine Monitoring of the GOOS Routine Monitoring of the GOOS Delayed-mode OSEs and OSSEs for short-range and seasonal forecast systems Design and evaluation of new and future observation system components Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Capacity Building

21. GOV- CLIVAR workshop, 13 th -17 th June Capacity Building OSEVal-TT Workshops 1 st GODAE OSEVal-TT meeting (november 2007, Unesco, Paris) 2 nd GOV OSEVal-TT meeting (June09, CLS, Toulouse) Report to GOV Science Team 1 st GOVST meeting Mercator-Ocean, Toulouse 2 nd GOVST meeting JAMSTEC, Tokyo Objective: Forum to share results and change and improve the OSEval-TT work plan

22. GOV- CLIVAR workshop, 13 th -17 th June Capacity Building OSEval-TT website

23. GOV- CLIVAR workshop, 13 th -17 th June GOV OSEVal-TT Objectives Routine Monitoring of the GOOS Routine Monitoring of the GOOS Delayed-mode OSEs and OSSEs for short-range and seasonal forecast systems Design and evaluation of new and future observation system components Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Provision and management of Observation Impact Statements (OIS) based on OSEval evidence Capacity Building

24. GOV- CLIVAR workshop, 13 th -17 th June Provision of Observations Impact Statement  Ultimate goal of the task team !! Synthesis of the OSE/OSSEs results in order to provide clear requirements coming from the GODAE community 1. Management of feedbacks from all the members especially important in case “observing system events”: continuation and extension of life of Jason-1 ENVISAT new orbit, use of Cryosat-2 ocean data 2. Preparation and formal publications of the OIS OSEs using GODAE systems (Oceanography special issue) OSE TT community white paper (OceanObs’09)  OSE/OSSE special issue every 3-4 years ?

25. GOV- CLIVAR workshop, 13 th -17 th June Provision of Observations Impact Statement Practical recommendations have to be provided to observation agencies: What is the process of delivery ? What is Observations Impact Statement ? Recent Experiences (Continuation and EoL of Jason-1, Cryosat-2 ocean data) show that: - synthetic report preferable than full scientific articles - reactivity is required due to short delay To be discussed during this meeting (breakout session) Peter Oke: Observations Impact Statement Peter Oke: Observations Impact Statement