Validation and Intercomparison Studies Within GODAE

During the Global Ocean Data Assimilation Experiment (GODAE), seven international operational centers participated in a dedicated modeling system intercomparison exercise from February to April 2008. The objectives were: (1) to show GODAE global-ocean and basin-scale forecasting systems of different...

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Bibliographic Details
Published in:Oceanography (Washington, D.C.) D.C.), 2009-09, Vol.22 (3), p.128-143
Main Authors: HERNANDEZ, FABRICE, BERTINO, LAURENT, BRASSINGTON, GARY, CHASSIGNET, ERIC, CUMMINGS, JAMES, DAVIDSON, FRASER, DRÉVILLON, MARIE, GARRIC, GILLES, KAMACHI, MASAFUMI, LELLOUCHE, JEAN-MICHEL, MAHDON, RAY, MARTIN, MATTHEW J., RATSIMANDRESY, ANDRY, REGNIER, CHARLY
Format: Article
Language:English
Subjects:
Analytical forecasting
Climatology
Forecasting models
GODAE
GODAE SPECIAL ISSUE FEATURE
Marine
Modeling
modeling system intercomparison
Ocean currents
ocean forecasting
Oceans
Sea ice
Sea water
Seas
Weather forecasting
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Summary:During the Global Ocean Data Assimilation Experiment (GODAE), seven international operational centers participated in a dedicated modeling system intercomparison exercise from February to April 2008. The objectives were: (1) to show GODAE global-ocean and basin-scale forecasting systems of different countries in routine interaction and continuous operation, (2) to assess the quality and perform scientific validation of the ocean analyses and the forecasting performance of each system, and (3) to learn from this exercise in order to increase interoperability and collaboration in real time. The validation methodology has steadily improved through several validation experiments and projects performed within the operational oceanography community. It relies on common approaches and standardization of outputs, with a set of diagnostics based on fully detailed metrics that characterize its strengths and weaknesses, but it also provides error levels for ocean estimates. The ocean forecasting systems provide daily fields of mesoscale water mass distribution and ocean circulation, with an option for sea-ice variations. We present a subset of the intercomparisons performed over different areas, showing general ocean circulation in agreement with known patterns. We also present some accuracy assessments through comparison with observed data.
ISSN:1042-8275
2377-617X
DOI:10.5670/oceanog.2009.71