MERCATOR OCEAN French Global Ocean Monitoring and Forecasting Contribution to Arctic GOOS Pierre...
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MERCATOR OCEAN French Global Ocean Monitoring and Forecasting Contribution to Arctic GOOS Pierre BAHUREL & Gilles GARRIC MERCATOR OCEAN 12 September 2006, Bergen, NERSC, ARCTIC GOOS meeting
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Transcript of MERCATOR OCEAN French Global Ocean Monitoring and Forecasting Contribution to Arctic GOOS Pierre...
MERCATOR OCEAN
French Global Ocean Monitoring and Forecasting
Contribution to Arctic GOOS
Pierre BAHUREL & Gilles GARRIC
MERCATOR OCEAN
12 September 2006, Bergen, NERSC, ARCTIC GOOS meeting
www.mercator.eu.org
MERCATOR OCEAN devoted to Ocean Monitoring and Forecasting
SATELLITE
In SITU
MODELFORECAST
Ocean observations 3D modelling Real-time Data Assimilation
A progressive implementation
From Research to Operations
A 10-year project 19952001 2003
2005
Operational forecasting since 2001 A public company since 2002, entirely
devoted to ocean forecasting
Kick-off First bulletin1/3° N.Atlantic
High res.1/15° N.Atlantic
and Med Sea
Global ocean Coverage ¼°
www.mercator.eu.orgMercator Ocean forecasts online
www.mercator.eu.org
Example : the Sept 6 Bulletin (Forecast for Sept 19)
www.mercator.eu.org
Example : the Sept 6 Bulletin (Forecast for Sept 19)
www.mercator.eu.orgMercator Ocean and the Arctic
The Global Ocean ¼° forecasting system
– Version 1• ¼° Global Ocean NEMO model ; • assimilation of sea surface height (altimetry) ; • operational since october 2005
– Version 2• ¼° Global Ocean NEMO model + Louvain Ice Model • assimilation of sea surface height + in situ T/S + SST; • Under development ; operational in 2007
www.mercator.eu.org
Multi-data (SST, SLA and in situ T/S profiles) and multivariate assimilation (SEEK filter analysis method)
+Global Coupled Ocean-Ice Model (NEMO/LIM2)¼° ORCA grid resolution(Arctic and Nordic Seas : 8-18 km) ; 50 oceanic vertical levels (1m at the surface); 3 levels in viscous-plastic sea ice model.Runoffs (Iennissei, McKenzie, Ob, Lena, …)
+ECMWF atmospheric forecasts and analysis
+Monitoring and ForecastingReal-time operations
Mercator Grid. Horizontal resolution in km
Global Ocean Prediction system Version 2 with ice model (2007)
www.mercator.eu.org
Arctic and Nordic seas circulation
Ability to reproduce the complex circulation in the semi-enclosed Arctic basin.
Mercator Ocean ¼° Global ocean output
Surface current (m/s)
www.mercator.eu.org
Arctic and Nordic seasSea ice
Observations Cersat/Ifremer(12.5km)
Sea ice concentration – Mean March 2001
Model (Ocean+LIM2)MERCATOR (1/4°)
www.mercator.eu.org
Arctic and Nordic seasSea ice, concentration and thickness
Mercator ¼° Global ocean model in the Arctic – Mean March 2001
Sea ice concentration Sea ice thickness
www.mercator.eu.org
Arctic and Nordic seasSurface energy and Freshwater budgets
Exchanges between the upper ocean and atmosphere through the sea-ice cover and through open water (leads/polynyas)
An example from Mercator/Antarctica coastal polynias
Katabatic winds
Sea ice concentration
Sea ice production
Realistic representation of the Prydz Bay polynia lifecyle.
www.mercator.eu.orgConclusion & Related activities
A global operational forecasting system available– MERCATOR OCEAN will upgrade in 2007 its operational ¼° global ocean system, to
extend its real-time monitoring and forecasting capacity to sea ice. – First outputs in the Arctic region are very encouraging.
Science– Investment on ocean/ice modelling (G.Garric)– Systematic comparison with observations (coll. IFREMER) and error analysis
Assimilation in sea ice– Implementation of sea ice-related metrics in the operational system (coll. NERSC)
IPY– Collaboration with Canada (IPY ; inter-comparison of sea ice models – Canadian
Archipelago)– Connected to DAMOCLES IP
MERSEA, GMES and MCS– MERCATOR OCEAN, active partner of the MERSEA IP, deeply involved in the
transition to an operational Marine Core Service– MERCATOR OCEAN is operating the European global ocean system– Contribution to the Arctic is build through NERCS coordination. Strong collaboration
Mercator Ocean / NERSC to set up the relevant operational service.
MERCATOR OCEAN is ready and willing to contribute to the Arctic GOOS initiative
ContactsLook at our products on the website
www.mercator.eu.org
Ask for products
Contact our ice model expert
Contact me
