MERCATOR French Ocean System

Federal Geographic Data Committee (FGDC) Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: Unknown
Publication_Date: Unknown
Title: MERCATOR French Ocean System
Description:
Abstract:
The Mercator mission was defined in 1996 by six partner organizations (Cnes, CNRS, Ifremer, IRD, Meteo France, and Shom). Mercator Ocean is based in Toulouse, France, which acts as the focal point for development work. Today, the team numbers 30 engineers and researchers from the six partner organizations, supported by subsidiaries CERFACS and CLS, and occasionally by external computer services and engineering companies. The group is developing several operational systems at a time. Only one system is used within the Mersea strand1 context and is described below. Mercator has been providing weekly analysis and real-time nowcast (T0), and forecast (T0+7 days and T0 +14 days) bulletins of the three-dimensional ocean in the North and tropical Atlantic up to 20 degrees S since January 17th 2001. The medium-resolution bulletin (1/3 degree; one point computed every 35 km at the equator) gives conditions from the surface right down to the bottom. This resolution is suitable for monitoring ocean circulation on a large scale. The first high-resolution bulletin (1/15 degree; one point computed every 5 to 7 km throughout the region of interest) was published on January 8th 2003 and is eddy-resolving. It covered the North Atlantic between 9 degrees N and 70 degrees N and the whole of the Mediterranean Sea. A low resolution global ocean model (2 degrees; one point computed every 220 km at the equator) with altimetry data assimilation is also available since May 2004. A high resolution global operational circulation model (1/4 degrees) assimilating satellite and in situ data is planned for the 2005 year. For more information see Mercator Configurations Summary at "http://www.mercator-ocean.fr/html/mod_actu/public/welcome_en.php3" Additional information about the Model: --------------------------------------------------- The four ocean model configurations retained by the Mercator project are all based on the OPA z-coordinates ocean circulation model (Madec et al., 1998). OPA is an incompressible Navier-Stokes primitive-equation model using Boussinesq rigid-lid approximation that describes the temporal evolution of velocity, temperature and salinity in three dimensions. Mixed layer dynamic is ruled by TKE turbulent closure equations (1.5 closure scheme) (Blanke et al. 1993). The first model configuration is the "Maquette Atlantique Nord" (MNATL) between 20 degrees S and 70 degrees N. The second one is the "Prototype Atlantique Mediterranee" (PAM) between 9 degrees N and 70 degrees N. The horizontal resolution is 1/3 degree for MNATL, 1/15 degrees for PAM and 43 levels are used on the vertical for both of them. The bathymetry is processed from the Smith and Sandwell (1997) data base and ETOPO5. Momentum and heat forcings are daily ECMWF forcing. Surface temperature is restored from Reynolds analyses (Reynolds & Smith, 1994), which include satellite and in-situ observations. Surface salinity is restored from climatology. The model is initialized using Reynaud (Reynaud et al. 1998) seasonal climatology. At last, two Ocean Global Prototypes, POG (1/4 degrees, 43 levels) and ORCA (2 degrees, 31 levels) are being implemented. Assimilation Method: -------------------------- The data assimilation method (SAM; Systeme d'Assimilation Mercator) used is the reduced-order optimal interpolation (OI) scheme SOFA (Sub Optimal Filtering of Altimetry) (De Mey and Benkiran, 2002) coupled with the PALM software coupler (PALM group, 2000). The baroclinic component is corrected applying a lifting-lowering method similar to Cooper and Haines method (1996). Data assimilation is stopped along isobaths 500m towards the coast. Sea level anomaly (SLA) from Jason1/ERS2-Envisat/GFO is assimilated along track, once a week. The mean sea surface height (MSSH) used during the assimilation process is the one from Rio et al. (2003) diagnosed from in-situ observations in the Atlantic ocean. In the Mediterranean basin, MSSH is made out of several numerical simulations. Version 1 products assimilates altimetry data (SLA) only, while version 2 products assimilates altimetry and in situ data (SLA, Sea Surface Temperature (SST), Sea Surface Salinity (SSS) and In situ profiles). Mercator bulletins contain a range of parameters selected to depict ocean conditions and dynamics. These include: salinity, temperature, surface currents, zonal, meridian and vertical velocities, transport, sea surface height, mixed layer depth, barotropic height, baroclinic height. "Model: analysis and forecasting" 3D ocean products and "observed ocean" 3D products can be accessed on-line through Mercator Web Products (full domain and zonal animations, whole maps, zonal maps, sections and moorings graphs). The "observed ocean" system is based on altimetry and in situ data measurements. For additional product information see "http://www.mercator-ocean.fr/html/produits/description/welcome_en.html"). Mercator web products are designed for a wide audience (freely available), while numerical products are files for professional users and are available on a remote server. Please make an e-mail request to products@mercator-ocean.fr Archive bulletins are also available to identify longer-term patterns. Mercator web products can be browsed on MERCATOR product web site: "http://bulletin.mercator-ocean.fr/html/welcome_en.jsp" Web products include the 3D modelled ocean (nowcasts and forecasts) Mercator prototypes (Medium-resolution Atlantic (PSY1V2, 1/3 degrees), High-resolution North Atlantic and Mediterranean (PSY2V1, 1/15 degrees), Global low-resolution (Minipog/PSY2G1;2 degrees)) and 3D global observed ocean products from satellite observation data (altimetry, surface sea temperatures) and in situ data, data intercomparison and 3D reconstitution of oceanic fields. In the Mersea strand1 european project context, Mercator makes available via an DODS/Opendap server its PSY2 high-resolution prototype products since 01/06/2003. Mercator also offers access to its products via the LAS implemented in the Mersea context. For more information see "http://strand1.mersea.eu.org/html/strand1/datalinks.html"
Purpose:
Not Available
Supplemental_Information:
REFERENCE: Publications related to Mercator project in specialized reviews ----------------------------------------------------------------------- Davidson, F., Hernandez, F. and Rio, M.H. : Impact of a realistic Mean Dynamic Topography on the forecast capabilities of the Mercator operational model assimilation system of the North Atlantic. In prep. Drillet, Y., Bourdalle-Badie, R., Siefridt, L., Le Provost, C., The MEDDIES in the Mercator North Atlantic and Mediterranean Sea eddy resolving model. Accepted in the Journal of Geophysical Research. Guinehut, S., Larnicol, G., Le Traon, P.Y., 2002, Design of an array of profiling floats in the North Atlantic from model simulations. Journal of Marine Systems, 35, 1-9. Guinehut, S., Le Traon, P.Y., Larnicol, G., Philipps, S., 2004, Combining Argo and remote-sensing data to estimate the ocean three-dimensional temperature fields - A first approach based on simulated observations. Journal of Marine Systems, 46 (1-4), 85-98. Lagarde, T., Piacentini, A. and Thual O., 2001 : A new representation of data-assimilation methods: The PALM flow-charting approach. Q. J. R. Meteorol. Soc., 127, 571, 189-207. Publications in the books ------------------------------------ De Mey, P., M. Benkiran, 2002, A multivariate reduced-order optimal interpolation method and its application to the Mediterranean basin-scale circulation. In : Ocean Forecasting, Conceptual basis and applications, N. Pinardi and J.D. Woods, Eds., Springer-Verlag, Berlin Heidelberg New York, 472pp. International congress proceedings ----------------------------------------- Bahurel,P. and Toumazou, V., Mercator ocean monitoring and forecasting: a 4D vision of the global ocean. Committee on Space Research - COSPAR 2004 Final meeting, Paris, France, Jully 2004. Bahurel, P., De Mey, P., Le Provost, C. and Le Traon, P.Y., 2002 : A GODAE prototype system with applications - Example of the Mercator system. "En route to GODAE" 2002 Proceedings, 137-142, Edited by CNES, France. Bahurel, P. and the Mercator Project Team, 1999 : Mercator, developing an integrated system for operational oceanography. OceanObs99 Proceedings, Saint Raphael, France. Bahurel, P, Dombrowsky, E.,Lellouche J.-M., and the Mercator project team, Mercator Ocean Monitoring and Forecasting System, near-real time assimilation of satellite and in situ data in different operational ocean models. 36th International Liege Colloquium on Ocean Dynamics, Liege, Belgium, April 2004 Benkiran, M., Greiner, E., Dombrowsky, E., Mercator Data Assimilation Systems: From a Simple Altimeter Data Reduced Order Optimal Interpolation to a Fully Multivariate Multi-data Assimilation System, EGU (European Geosciences Union), Nice, France, April 2004. Crosnier, L., Le Provost, C. and the MERSEA Team, An ocean forecast systems intercomparison within the Mersea project : methodology and results, EGU (European Geosciences Union), Nice, France, April 2004. Derval, C., Durand, E., Fleury, L., Garric, G. and Remy, E., The Mercator global ocean model, EGU (European Geosciences Union), Nice, France, April 2004. Drillet, Y.,Bourdalle-Badie, R., Daget, N., Last decade simulation with the Mercator North Atlantic prototype, EGU (European Geosciences Union), Nice, France, April 2004. Ferry, N., Remy, E. , Brasseur, P., de Mey, P.,The Mercator global ocean operational forecasting systems: first evaluation. 36th International Liege Colloquium on Ocean Dynamics, Liege, Belgium, April 2004 Garric, G., Derval, C., Durand, E., Fleury, L., Le Provost, C., and Remy, E., A preliminary study of the ECMWF analysis at high-latitudes with a coupled ocean-sea ice model. EGU (European Geosciences Union), Nice, France, April 2004. Garric, G. et Hodges, K.I., Impacts of sea ice on the Southern Hemisphere storm tracks distribution with a simple GCM. EGU (European Geosciences Union), Nice, France, April 2004. Guinehut, S., Larnicol, G., Le Traon, P.Y., Combining satellite and in-situ T/S profile data to better estimate the 3D thermohaline fields. 36th International Liege Colloquium on Ocean Dynamics, Liege, Belgium, April 2004 Guinehut, S., Le Traon, P.Y. et Larnicol, G., Comparing and combining argo data with altimeter data, EGU (European Geosciences Union), Nice, France, Avril 2004. Etienne, H. and Benkiran, M., Forecast error study for the Mercator assimilation system: Estimation of the Fully Multivariate Multi-data Assimilation parameters., EGU (European Geosciences Union), Nice, France, April 2004. Lellouche J.M., Greiner E., Drillet Y., Bourdalle-Badie R., Near-real-time Assimilation of Satellite Data in North Atlantic and Mediterranean High Resolution Model, EGU (European Geosciences Union), Nice, France, April 2004. Le Provost,C., Bahurel, P. , Bell, M., Bertino, L., Blanc, F., Chassignet, E., Coppini, G., Crosnier, L., Dombrowsky, E. , Fratianni, C., Hurlurt, H., Le traon, P.Y. , Lisaeter, K., Liu, C.L., Pinardi, N., Godae Atlantic and Mediterranean Sea Prototype Project. 36th International Liege Colloquium on Ocean Dynamics, Liege, Belgium, April 2004 Testut, C.E., Tranchant, B., Brasseur, P., De Mey, P., Recent developments of the Mercator assimilation system (sam): towards the SEEK filter Tranchant B., Testut C-E. , Brasseur P. and De Mey P., Recent Developments of the Mercator Assimilation System (SAM): Towards the Seek Filter, The 2004 Joint Assembly (CGU, AGU, SEG, EEGS), Montreal, Canada. Toumazou, V. and the Mercator Ocean team, Data sets from the Mercator Ocean monitoring and forecasting system.
Status:
Progress: In Work
Maintenance_and_Update_Frequency: As needed
Spatial_Domain:
Description_of_Geographic_Extent:
Bounding_Coordinates:
West_Bounding_Coordinate: -100.0
East_Bounding_Coordinate: 20.0
North_Bounding_Coordinate: 67.0
South_Bounding_Coordinate: -60.0
Keywords:
Theme:
Theme_Keyword_Thesaurus: GCMD SCIENCE PARAMETERS
Theme_Keyword_Thesaurus: GCMD PLATFORM
Theme_Keyword_Thesaurus: GCMD INSTRUMENT
Theme_Keyword_Thesaurus: PROJECT
Theme_Keyword_Thesaurus: ANCILLARY KEYWORDS
Theme_Keyword_Thesaurus: ISO TOPIC CATEGORY
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > DIFFUSION
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN CURRENTS
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN CIRCULATION > OCEAN MIXED LAYER
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN HEAT BUDGET > HEAT FLUX
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > OCEAN MIXED LAYER
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > THERMOCLINE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE
Theme_Keyword: EARTH SCIENCE > OCEANS > OCEAN WINDS > WIND STRESS
Theme_Keyword: EARTH SCIENCE > OCEANS > SALINITY/DENSITY > HALOCLINE
Theme_Keyword: EARTH SCIENCE > OCEANS > SALINITY/DENSITY > PYCNOCLINE
Theme_Keyword: EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY
Theme_Keyword: EARTH SCIENCE > OCEANS > SEA SURFACE TOPOGRAPHY > SEA SURFACE HEIGHT
Theme_Keyword: ERS-2 > EUROPEAN REMOTE SENSING SATELLITE-2
Theme_Keyword: GFO-1 > GEOSAT FOLLOW-ON-1
Theme_Keyword: JASON-1
Theme_Keyword: NOAA POES > NOAA POLAR ORBITING ENVIRONMENTAL SATELLITES
Theme_Keyword: ENVISAT > ENVIRONMENTAL SATELLITE
Theme_Keyword: ALTIMETERS
Theme_Keyword: RADAR ALTIMETERS
Theme_Keyword: CTD > CONDUCTIVITY, TEMPERATURE, DEPTH
Theme_Keyword: DRIFTING BUOYS
Theme_Keyword: XBT > EXPENDABLE BATHYTHERMOGRAPHS
Theme_Keyword: AVHRR > ADVANCED VERY HIGH RESOLUTION RADIOMETER
Theme_Keyword: POSEIDON-2 > JASON-1 RADAR ALTIMETER
Theme_Keyword: GODAE > GLOBAL OCEAN DATA ASSIMILATION EXPERIMENT
Theme_Keyword: MERSEA > MARINE ENVIRONMENT AND SECURITY FOR THE EUROPEAN AREA
Theme_Keyword: MERCATOR > MERCATOR OCEAN-OPERATIONAL OCEANOGRAPHY
Theme_Keyword: Model Assimilation
Theme_Keyword: Altimetry Data
Theme_Keyword: Sea Surface Temperature
Theme_Keyword: In Situ Data
Theme_Keyword: Model Intercomparison
Theme_Keyword: Operational Oceanography
Theme_Keyword: ELEVATION
Theme_Keyword: OCEANS
Place:
Place_Keyword_Thesaurus: GCMD
Place_Keyword: OCEAN > ATLANTIC OCEAN
Place_Keyword: OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
Place_Keyword: OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > MEDITERRANEAN SEA
Place_Keyword: GEOGRAPHIC REGION > GLOBAL OCEAN
Temporal:
Temporal_Keyword_Thesaurus: GCMD
Temporal_Keyword: Daily, Weekly
Access_Constraints: Mercator web real time image products (GIF format) are designed for a wide audience (freely available, except zonal maps younger than 30 days need authorized access), while numerical products are files for professional users and are available on a remote server with authorized access. Please, you must justify your request to these products. E-mail request to products@mercator-ocean.fr or download the form
Use_Constraints:
Not Available
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VINCENT TOUMAZOU
Contact_Position: TECHNICAL CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Contact_Electronic_Mail_Address: vincent.toumazou@mercator-ocean.fr
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Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Not Available
Logical_Consistency_Report:
Not Available
Completeness_Report:
Not Available
Lineage:
Process_Step:
Process_Description:
Not Available
Process_Date: Unknown
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: regional (1/3, 1/15 degrees), global (2 degrees)
Longitude_Resolution: regional (1/3, 1/15 degrees), global (2 degrees)
Geographic_Coordinate_Units: Decimal degrees
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: Not Available
Altitude_Resolution: regional (43 vertical levels), global (31 vertical levels)
Altitude_Distance_Units: Not Available
Altitude_Encoding_Method: Implicit coordinate
Depth_System_Definition:
Depth_Datum_Name: Not Available
Depth_Resolution: regional (43 vertical levels), global (31 vertical levels)
Depth_Distance_Units: Not Available
Depth_Encoding_Method: Implicit coordinate
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Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: FR/MERCATOR > MERCATOR OCEAN-Operational Oceanography, France
Contact_Person: GIP MERCATOR OCEAN USER SERVICES
Contact_Position: DATA CENTER CONTACT
Contact_Address:
Address_Type: Mailing and Physical Address
Address: Parc Technologique du Canal
Address: 8-10 rue Hermes
City: Ramonville St Agne
Postal_Code: 31520
Country: FRANCE
Contact_Voice_Telephone: 33 5 61 39 38 02
Contact_Facsimile_Telephone: 33 5 61 39 38 99
Contact_Electronic_Mail_Address: products@mercator-ocean.fr
Resource_Description: MERCATOR
Distribution_Liability:
Not Available
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: GIF, NetCDF, CF/COARDS
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.mercator-ocean.fr/
Access_Instructions:
DATA CENTER URL
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.mercator-ocean.fr
Access_Instructions:
Mercator Ocean Main Webpage
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://bulletin.mercator-ocean.fr/html/welcome_en....
Access_Instructions:
Mercator Ocean Web products. 3D modelled ocean: nowcasts and forecasts (medium resolution Atlantic 1/3 degree; high resolution North Atlantic and Mediterranean 1/15 degree; global low resolution 2 degree); and global observed ocean, data intercomparison and 3 D reconstitution of oceanic fields.
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://strand1.mersea.eu.org/html/strand1/datalink...
Access_Instructions:
Mersea Ocean modelling system homepage. Access to the Mercator real-time web image High-resolution North Atlantic and Mediterranean (1/15 degree) products (public access) and numerical products through LAS and DODS/Opendap (restricted access)
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
http://www.mercator-ocean.fr/html/produits/descrip...
Access_Instructions:
Mercator Web products hanbook webpage (including the "Model: analysis and forecasting" products handbook and the "Observed ocean" products handbook). This handbook gives you the keys to understanding the 2,000 images you can see every week in the Mercator Web bulletin. The "observed ocean" system is based on altimetry and in situ data measurements. Additional information about Mercator configuration can also be found.
Fees: Not Available
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Metadata_Reference_Information:
Metadata_Date: 20041227
Metadata_Review_Date: 20090415
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: MELANIE F. MEAUX
Contact_Position: DIF AUTHOR
Contact_Address:
Address_Type: Mailing and Physical Address
Contact_Electronic_Mail_Address: gsfc-gcmduso@mail.nasa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
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