Godae-OceanViewFrench National report 2011

Nicolas Ferry

Mercator Océan,

GOVST-III meeting, ESA HQ Paris, 14-18 Nov. 2011

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1. IBI 1/36°

2. BIO 1°

3. GLORYS2V1 reanalysis (1992-2009)

4. Fukushima incident

Outline

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SST11 Sept. 2010

IBI 1/36° operational

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

Copy of the system operated by Puertos d. E. (Spain) MyOcean service since June

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CLASS4: current meter moorings

IBI 1/36° : CAL/VAL

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Storm surge assessment

IBI 1/36° : CAL/VAL

BILBAO

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Taylor diagram for analysed SST:

IBI 1/36° : CAL/VAL

High freq. (T<20j) Low freq. (T>20j)

IBI36GLO ¼°

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- Analysis / forecast skill evaluated

- CLASS1, CLASS4, ….

IBI 1/36° : CAL/VAL

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BIOMER1°: operationnal

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)

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BIOMER1°: in demonstration

Dissolved O2:

Ana. Oct 2010 CLIM. Oct

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BIOMER1°: in demonstration

Chla:

Ana. Oct 2010 CLIM. Oct

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GLORYS – Objectives

eddy permitting global ocean/sea-ice reanalysis spanning the

“altimetric + ARGO" era 1992-2009. reanalysis system close to operational PS3V3 ¼° system :

GLORYS2V1 reanalysis (1992-2009)

• 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

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GLORYS – Objectives

GLORYS2V1 reanalysis (1992-2009)

• 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

Reanalysis system features

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Data assimilation diagnostics for T

Global misfit average Global misfit RMS

No BIAS

RMS is stable

Results: GLORYS2V1 reanalysis : 1992-2009

ARGO is getting in

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Data assimilation monitoring : SLA

1992 2009

GLORYS2V1 reanalysis results

No BIAS

RMS ~7cm

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CLASS1 metric - difference with climatology

SST (0.5 m depth): difference with Levitus climatology

GLORYS2 REFERENCE: MJM95

Results: GLORYS2V1 reanalysis : 1992-2009

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GLORYS2V1

Levitus et al., GRL 2005

Ocean Heat Content 0-700m

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2 J

Results: GLORYS2V1 reanalysis : 1992-2009

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SST trends

___ GLORYS: 0.10°C/decade- - - OBS. : 0.17°C/decade

Results: GLORYS2V1 reanalysis : 1992-2009

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Arctic Sea Ice:Ice extent

SEA ICE EXTENT INTERANNUAL ANOMALIES

Correlation = 0.9

Results: GLORYS2V1 reanalysis : 1992-2009

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Arctic Sea Ice Extent:September 2007 minimum

Results: GLORYS2V1 reanalysis : 1992-2009

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GLORYS users

> 40 users, data volume provided > 16 TBseveral 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)• …

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Oceanic bulletin on the oceanic off Japan: based on global 1/12° Mercator OOFS

http://www.mercator-ocean.fr/eng/produits-services/bulletins/japan

COMMENTAIRE

Fukushima incident

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Fukushima incident

Mercator has provided to SIROCCO modeling group (LEGOS, Toulouse, FR):1. High resol. 1/12° analyses / forecasts from operational PSY4 OOF2. ECMWF atmospheric forcing fields

Daily forecasts provided to Atomic Energy Authority

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Perspectives

• MyOcean project 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 / OISsCLASS 4 intercomparison for in situ T,S CLASS 4 intercomparison for tide gauge sea

lev.