Zos : sea_surface_height_above_geoid in NEMO

Versions v4.2.x
1

I have the variable zos being saved in a grid_T.nc file. Based on the standard name, this variable represents the “sea surface height above geoid” which is the Absolute Dynamic Topography (ADT) :

Since,

ADT = SLAp + MDTp

Where:

SLAp : Sea level anomaly over period p.
MDTp : Mean Dynamic Topography over period p

My question is: How can I get the MDTp values from the NEMO model ?

2

Hei,

I do not have the answer to your question, but I know someone who might, Vahidreza Jahanmard, a PhD student in Taltech in Tallinn.

Hope this helps,

Robinson

3

Thanks Robinson, I will contact.

4

Hi

one way of getting MDTP is to calculating long term averge of SSH fron nemo output. I do now not know how long is enough but the longer the better. If yoy have tides as part of your SSH, i guess it should cover the lowest astronomical tidal period which i think it is around 18 years.

Saeed