Regarding ROMS "zeta" and surface geostrophic currents

General scientific issues regarding ROMS

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yadusharma
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Joined: Tue Sep 22, 2015 3:09 pm
Location: Indian Institute of Technology Gandhinagar

Regarding ROMS "zeta" and surface geostrophic currents

#1 Post by yadusharma » Thu Apr 04, 2019 1:05 pm

Hi Forum,


I have a question regarding the calculation of the surface geostrophic currents from ROMS as

Ugeo=(g/f)X delta(SSHA) [Please see the attached complete equation]

Can I directly use the "zeta" field from ROMS? Or Do I have to subtract the Mean Dynamic Topography from ROMS zeta? :shock:

From the ROMS forum I found that "ROMS zeta is absolute SSH" and "ROMS zeta is close to the sum of MDT and sea level anomaly (SLA)".


I would be grateful for any suggestions in this regard.
Thanks in advance
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