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GODAE OceanView Observing system Evaluation Task Team Report

GODAE OceanView Observing system Evaluation Task Team Report. Peter Oke 1 and Gilles Larnicol 2 1 CSIRO Marine and Atmospheric Research; 2 CLS November 2011.

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GODAE OceanView Observing system Evaluation Task Team Report

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  1. GODAE OceanView Observing system Evaluation Task Team Report Peter Oke1 and Gilles Larnicol2 1CSIRO Marine and Atmospheric Research; 2CLS November 2011 “The most exciting phrase to hear in science, the one that heralds the most discoveries, is not ‘Eureka!’, but ‘That’s funny…’”, Isaac Asimov (1920-1992)

  2. GOV OSEVal-TT organisation Co-Chairs: • Peter Oke (CSIRO) • Gilles Larnicol (CLS) Core Members: • Magdalena Balmaseda (ECMWF) • Laurent Bertino (NERSC) • Gary Brassington (BoM) • Jim Cummings (NRL) • Yosuke Fujii (JMA/MRI) • Pat Hogan (NRL) • VillyKourafalou (Univ. Miami) • Daniel Lea (UKMet) • Matthew Martin (UKMet) • AvichalMehra (NOAA) • PavelSakov (NERSC) • Anthony Weaver (CERFACS) Associate members: • Mike Bell (UKMet) • Eric Dombrowsky (Mercator) • Fabrice Hernandez (Mercator) • Eric Lindstrom (NASA) • Andreas Schiller (CSIRO)

  3. Observing System Evaluation Task Team (OSEval-TT) 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 Capacity Building Provision and management of Observation Impact Statements (OIS) based on OSEval evidence

  4. Framework for Ocean Observing:where GODAE OceanView fits GODAE OceanView GOV OSEval-TT Contributed by E. Lindstrom, OOPC Chair, NASA

  5. Observing System Evaluation Task Team (OSEval-TT) 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 Capacity Building Provision and management of Observation Impact Statements (OIS) based on OSEval evidence

  6. Capability building:GODAE and GOV OSEval Workshops • 1st GODAE OSE/OSSE workshop (November 2007, UNESCO, Paris) • OSEval-TT established • 2nd GOV OSEVal-TT workshop (June 2009, CLS, Toulouse) • Initiation of Routine Monitoring activities • OSEval-TT work plan (draft) • GODAE OceanView and CLIVAR GSOP workshop on Observing System Evaluation and Inter-comparisons (June 2011, Santa Cruz, CA, USA) • Extension and expansion of NRT OSEs (3 groups plan to participate; others may participate) • Concept of “Observation Impact Statement” introduced

  7. Observing System Evaluation Task Team (OSEval-TT) 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 Capacity Building Provision and management of Observation Impact Statements (OIS) based on OSEval evidence

  8. Example of an OSE (with-holding XBT) OSEs using HYCOM after the DWH Oil spill to assess the impact of XBT data Halliwell et al. (NRL & NOAA)

  9. Contributed by G. Halliwell, NOAA/AOML/PhOD

  10. Impact of P-3 Observations on Ocean Analyses • Collaboration between AOML and NRL-Stennis • NRL ran two experiments with the 1/25° regional HYCOM: 1. Assimilate all observations 2. Deny only the P3 observations • Critical issues affecting this evaluation: • Results depend on choices of model and DA scheme • Impact of update cycle • Impact of relative weighting of synthetic T,S profiles derived from altimetry vs. in-situ T,S profiles Contributed by G. Halliwell, NOAA/AOML/PhOD

  11. No assimilation +- 1 degree No assimilation ~ 4-5 degrees RED: With P3 assimilation BLACK: No P3 assimilation No assimilation < 0.5 Contributed by G. Halliwell, NOAA/AOML/PhOD

  12. Error Analysis, Nancy Foster T Profiles, 9 July Temperature, 30 – 360 m 20°C isotherm depth 8-10 July Contributed by G. Halliwell, NOAA/AOML/PhOD

  13. Oke, P., and P. Sakov: Design and Assessment of the Australian Integrated Marine Observing System Simple method to assess the potential impact of data from moorings

  14. Footprint of individual moorings Cabbage Patch Mooring Deep Slope Mooring

  15. Footprint of individual moorings

  16. SA-IMOS regional moorings array Intraseasonal SSH Intraseasonal SSV

  17. Combined “footprint” for NRSs on interannual time-scales MODEL Observations SSH SST

  18. Delayed-mode OSEs and design experiments • Many examples of research in this area at the GODAE OceanView – CLIVAR GSOP workshop … refer to GOV-CLIVAR WS report

  19. Observing System Evaluation Task Team (OSEval-TT) 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 Capacity Building Provision and management of Observation Impact Statements (OIS) based on OSEval evidence

  20. Responses to “observing system events” • Continuation of Jason-1 data processing in inter-leaved orbit (June 2009) • UKMet and BoM provided a demonstration of the impact of Jason-1 data in inter-leaved orbit during recent outages Contributed by G. Brassington, BoM

  21. NRT OSEs • Routinely run parallel forecast at operational centers and with-hold a different data each month: • Quantify the impact of each data type on forecasts • Multi-system approach

  22. NRT OSEs • Routinely run parallel forecast at operational centers and with-hold a different data each month: • Quantify the impact of each data type on forecasts • Multi-system approach

  23. Observing System Evaluation Task Team (OSEval-TT) 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 Capacity Building Provision and management of Observation Impact Statements (OIS) based on OSEval evidence

  24. Provision of Observation Impact Statements (OISs)

  25. Provision of Observation Impact Statements (OISs)

  26. Summary • OSEval-TT Work plan completed (but living ) • GODAE OceanView OSEval-TT are committed to supporting observation agencies/teams in demonstrating the impact of observations on forecast and analysis products • Many groups are undertaking research activities • Recent initiatives have motivated many developments at operational centers : • DFS, analysis sensitivity, forecast sensitivity • The OSEval-TT proposed the idea of NRT OSEs; and are promoting the idea of Observation Impact Statements (OISs) (fom C. Conlon) • Details of schedule, reporting, dissemination and engagement with GOV Patrons will be refined offline • Considering review article of OSEval achievements (expand on Oceanography special issue) • Resources for OSE / IV work ???

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