[PROJ] Greek geoid model 2023

[Nikolaos Ves]

Hi Javier,

This is an interesting one; I have not found a law that declares
the official Greek coordinate system as the one described at epsg:27000.
Interestingly enough at this moment, greece is trying to complete it's
cadastre, and as a basis to it,  everything is using the GRS80 ellipsoid as
well.
My take is that if this one was developed by the Hellenic Military
Geographical Service, we could very well start seeing it being used for
applications in the mid/far future, but for now it's not used in any
official civil projects that I am aware of.

Happy to dig a bit more to find a more authoritative answer somewhere if
that is not sufficient,
Let me know,
Nikos

On Mon, Apr 8, 2024 at 4:14 PM Javier Jimenez Shaw via PROJ <
proj at lists.osgeo.org> wrote:

> Hi
>
> I found recently that there is a new geoid model in Greece "HELLAS GEOID
> 2023" (HG2023)
>
> https://www.researchgate.net/publication/372604538_Geoid_model_determination_for_the_Hellenic_area_Hellas_Geoid_2023
>
> In case it is the official one in Greece, it would be nice to include it
> in PROJ (and EPSG).
> Has anybody here contacts in Greece? I already wrote a couple of emails to
> the authors, but probably I ended up in the spam folder. No useful info in
> the webpage (or I couldn't find it).
>
> Thank you.
>
> Regards,
> Javier.
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