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<p>Dear MITgcm community,<br>
<br>
Over the past few months, I’ve been struggling to achieve
realistic sea surface height ("Eta") results in my MITgcm
simulations. I’ve tried several configurations,including
non-hydrostatic, quasi-non-hydrostatic, and nonlinear free surface
options, but the SSH output often differs significantly from the
parent model (the Copernicus Mediterranean analysis, MEDSEA). I’ve
attached an example and also shared a link to illustrate the
issue. I have tides configured, and the ssh is initialized from
MEDSEA data. However, when I compare the SSH output with the
parent model (or with a ROMS simulation, for example), it appears
to oscillate around a constant value that doesn’t evolve much over
time, or changes are very small.<br>
<br>
A summary of my configuration: Horizontal resolution: 1.6 km, NW
Mediterranean Sea, Atmospheric forcing: ECMWF, initial ssh set
with pSurfInitFile, SphericalPolarGrid, quasiHydrostatic = .TRUE.,
nonlinFreeSurf = 3, rigidLid = .FALSE., implicitFreeSurface =
.TRUE., <br>
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<p>If any additional parameters would help diagnose the issue, I’d
be happy to provide them.<br>
<br>
The temperature, salinity, and velocity fields are generally in
good agreement with ROMS and MEDSEA, but I’d really like to
improve the SSH performance. Has anyone encountered a similar
issue or found strategies to improve SSH in MITgcm?<br>
<br>
Thanks in advance for your help!<br>
<br>
Best regards,<br>
Jordi<br>
<br>
<a class="moz-txt-link-freetext" href="https://saco.csic.es/s/c2fSgN5RWPRcDSQ">https://saco.csic.es/s/c2fSgN5RWPRcDSQ</a><br>
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