MERCATOR OCEAN French Global Ocean Monitoring and Forecasting Contribution to Arctic GOOS

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MERCATOR OCEAN French Global Ocean Monitoring
and ForecastingContribution to Arctic GOOS

• Pierre BAHUREL Gilles GARRIC
• MERCATOR OCEAN

12 September 2006, Bergen, NERSC, ARCTIC GOOS
meeting
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MERCATOR OCEAN devoted to Ocean Monitoring and
Forecasting

• Ocean observations
• 3D modelling
• Real-time Data Assimilation

• Operational forecasting since 2001
• A public company since 2002, entirely devoted to
  ocean forecasting

Global ocean Coverage ¼
High res. 1/15 N.Atlantic and Med Sea
First bulletin 1/3 N.Atlantic
Kick-off
A progressive implementation From Research to
Operations A 10-year project
2003
2001
2005
1995
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Mercator Ocean forecasts online
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Example the Sept 6 Bulletin (Forecast for Sept
19)
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Example the Sept 6 Bulletin (Forecast for Sept
19)
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Mercator 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

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Global Ocean Prediction system Version 2 with
ice model (2007)
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 Forecasting Real-time operations
Mercator Grid. Horizontal resolution in km
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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)
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Arctic and Nordic seasSea ice
Sea ice concentration Mean March 2001
Model (OceanLIM2) MERCATOR (1/4)
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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
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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

Realistic representation of the Prydz Bay polynia
lifecyle.
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Conclusion 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

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Contacts

• Look at our products on the website
• www.mercator.eu.org
• Ask for products
• products_at_mercator-ocean.fr
• Contact our ice model expert
• Gilles.Garric_at_mercator-ocean.fr
• Contact me
• Pierre.Bahurel_at_mercator-ocean.fr