Re: Connectivity Modeling System (CMS) User's discussion How to manage sites very close to the coast?

[Robin Faillettaz]

Hi Céline,

You have to check that your release sites are in an area where you have current fields (i.e. outside of the land mask of your hydrodynamics files) and where the first flow direction at the time of release does not carry the particles onshore.

The flag ‘avoidcoast’ won’t actually help in the latter case as it won’t be able to determine where to place the particle back in the water; I assume that this is what’s happening in your case.

Best,


> Le 17 août 2020 à 18:26, Céline Barrier <ceba...@gmail.com> a écrit :
>
> Dear all,
>
> I wonder how CMS considers the fact that my release sites are close to the coast.
> I have 8 release sites, and since I want these sites (and later my areas, when I will define polygons) to be in an area of bathymetry 10m, they are very close to the shoreline.
> I am using QGIS to visualize my points (to check if - indeed - they were not on land), but they are not.
> Also, I made small arbitrary tests and when I move my points away from the coast, I no longer have the error message.
> My flag avoidcoast is set on .true.
> I'm using MARS3D Menor1200 oceanographic data.
>
> Do you have any ideas / advice on how to go about dealing with this compromise? Should I change my oceanographic files (resolution?).
>
> Thank you very much

--
Robin Faillettaz
Laboratoire de Technologie et de Biologie Halieutique
IFREMER - Station de Lorient
8, rue François Toullec
56100 Lorient, France
Tel: +33 (0)2 97 87 38 12