Godae-OceanView French National report 2011

1. Godae-OceanViewFrench National report 2011 Nicolas Ferry Mercator Océan, GOVST-III meeting, ESA HQ Paris, 14-18 Nov. 2011

2. Outline IBI 1/36° BIO 1° GLORYS2V1 reanalysis (1992-2009) Fukushima incident

3. SST 11 Sept. 2010 • NEMO – ORCA grid model • Explicit free surface with ad hoc physical parameterisations: • simulation of tides • state of the art vertical mixing model (k-epsilon) • explicit forcing by atmospheric surface pressure • Initial condition inherited from PSY2 (NATL, 1/12°) operational system + onee-way nesting: • Every week: 3 week hindcast + 2 week forecast daily updates IBI 1/36° operational Copy of the system operated by Puertos d. E. (Spain)  MyOcean service since June

4. IBI 1/36° : CAL/VAL CLASS4: current meter moorings

5. IBI 1/36° : CAL/VAL Storm surge assessment BILBAO

6. IBI 1/36° : CAL/VAL Taylor diagram for analysed SST: IBI36 GLO ¼° High freq. (T<20j) Low freq. (T>20j)

7. IBI 1/36° : CAL/VAL - Analysis / forecast skill evaluated - CLASS1, CLASS4, ….

8. Bio geochemical analysis and forecasting •  forced by ¼° global system • - PISCES • - Off line simulation at coarser resolution (1°) with the physical forcing upscaled ¼° 1° • MyOcean Global Bio component • In operation since June • Extensive CAL/VAL (3 years hindcasts) BIOMER1°: operationnal

9. Dissolved O2: BIOMER1°: in demonstration Ana. Oct 2010 CLIM. Oct

10. Chla: BIOMER1°: in demonstration Ana. Oct 2010 CLIM. Oct

11. GLORYS – Objectives GLORYS2V1 reanalysis (1992-2009) • eddy permitting global ocean/sea-ice reanalysis spanning the “altimetric + ARGO" era 1992-2009. • reanalysis system close to operational PS3V3 ¼° system : • Coordination at European level (MyOcean project): • NEMO3 Ocean code, tuned for reanalyses, • ERA Interim forcing • Reprocessed historical observations provided by TACs • Different data assimilation methods • 3 GLO ¼° Reanalyses: MERCATOR (Fr.), U. Reading (UK), CMCC (It) • 1 CTRL simulation CNRS (Fr.)1 Ocean state estimation based on observations only: CLS (Fr.) •  Common CAL/VAL protocol for reanalyses evaluation and assessment

12. GLORYS – Objectives GLORYS2V1 reanalysis (1992-2009) Reanalysis system features • Global ocean/sea-ice « eddy-permitting »  circulation model: ORCA025.L75 - NEMO OGCM (Ocean: OPA, sea-ice: LIM2_EVP), 75 levels (dz=1m near surface, dz=200m near bottom ) - ERA-Interim, 3H turbulent fluxes, GEWEX based correction for radiative fluxes - Configuration set up by DRAKKAR consortium (Barnier et al, 2006, Drakkar group, 2007). • Data assimilation system - Adapted from operational SAM systems used by MERCATOR-Ocean for operational forecasts - SEEK Filter + 3DVAR bias correction for Temp and Salinity. + IAU • A delayed-time quality-controlled observations for assimilation - In-situ: CORA data base (Coriolis data center) - Altimetry: AVISO data base (CLS) - SST maps: Reynolds 0.25° AVHRR_only

13. Results: GLORYS2V1 reanalysis : 1992-2009 ARGO is getting in Data assimilation diagnostics for T Global misfit average Global misfit RMS RMS is stable No BIAS

14. GLORYS2V1 reanalysis results Data assimilation monitoring : SLA RMS ~7cm No BIAS 1992 2009

15. GLORYS2 REFERENCE: MJM95 Results: GLORYS2V1 reanalysis : 1992-2009 CLASS1 metric - difference with climatology SST (0.5 m depth): difference with Levitus climatology

16. Results: GLORYS2V1 reanalysis : 1992-2009 Ocean Heat Content 0-700m Levitus et al., GRL 2005 1022 J GLORYS2V1

17. Results: GLORYS2V1 reanalysis : 1992-2009 SST trends ___ GLORYS: 0.10°C/decade - - - OBS. : 0.17°C/decade

18. SEA ICE EXTENT INTERANNUAL ANOMALIES Correlation = 0.9 Results: GLORYS2V1 reanalysis : 1992-2009 Arctic Sea Ice: Ice extent

19. Results: GLORYS2V1 reanalysis : 1992-2009 Arctic Sea Ice Extent: September 2007 minimum

20. GLORYS users > 40 users, data volume provided > 16 TB several research areas and application fields: • Biogeochemical modelling (LSCE, Mercator) • Ecosystem modeling (CLS/MEMMS) • Sea Ice (LPO, Mercator) • TIWs (LEGOS) • pCO2 (NIES Japan, Bjerknes CCR) • Ocean circulation estimation and validation (CLS, SHOM) • Ocean Thermal Energy Conversion (EDF, Mercator) • Boundary / Initial conditions for regional modeling (CNRM, Infocean) • Mean Dynamic Topography inter comparisons (CLS, China) • MOC, MHT (RSMAS, UFRPE, CLS, Mercator) • South Atlantic circulation (NOAA) • Climate indexes, trends (IMEDEA, Spain) • Global ocean Mass budget (EOST/IPGS, NASA/GSFC) • object / animal drift (CLS, LPO, U. Texas, U. Hawai) • Hurricane (LEGI, CERSAT) • …

21. Oceanic bulletin on the oceanic off Japan: based on global 1/12° Mercator OOFS Fukushima incident COMMENTAIRE http://www.mercator-ocean.fr/eng/produits-services/bulletins/japan

22. Fukushima incident • Mercator has provided to SIROCCO modeling group (LEGOS, Toulouse, FR): • High resol. 1/12° analyses / forecasts from operational PSY4 OOF • ECMWF atmospheric forcing fields • Daily forecasts provided to Atomic Energy Authority

23. Perspectives • MyOceanproject ends April 2012.MyOcean2 project (2,5 years) follows • GLOBAL 1/12° OOFS upgrade: • Upgraded model config (CORE Bulk, 3 hourly) • IAU, improved obs. errors • Continue to improve Global ¼°, Regional 1/12° OOFSs • Contribute to GOV TT: • NRT OSEs / OISs • CLASS 4 intercomparison for in situ T,S • CLASS 4 intercomparison for tide gauge sea lev.