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Welcome to the Global Ocean thematic portal
Operator: Mercator Ocean, France
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The Mersea Global system is a living system growing in complexity from a low global resolution (2°) assimilating only altimetry data to reach a high resolution (1/12°) system assimilating in situ data and nested to a biogeochemical model (see Mersea systems versions).
The present operational Global systems on 1st October 2005 (Mersea V1) are the Global 1/4° prototype, assimilating altimetry data, and the Global 1/12° demonstrator on North Atlantic assimilating altimetry and in situ data.
They are run on a weekly basis with 2-weeks forecast. The physical model is based on the OPA software and the assimilation is made using a reduced order optimal interpolation (ROOI) scheme.
| Configurations |
Main characteristics |
| PSY3V2 |
Global 1/4°, eddy permitting, multivariate data assimilation |
| PSY2V2 |
1/15° eddy resolving demonstrator on North Atlantic, with altimetry and in situ data assimilation |
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Global ocean SST as seen by the Mercator 1/4° global system
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Any question, any information you request, please send an e-mail to
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