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?
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