Lagrangian transport model for simulating heavy metals such as Cd and Pb from ROMS outputs

[jihene]

Hello everyone,
I’ve used ROMS hydrodynamic model to study the dynamics in the Gulf of Gabes (Tunisia). My goal is to investigate the transport and dispersion of heavy metals such as cadmium (Cd) , lead (pb),chromonium(Cr)... within the Gulf.
I'm wondering if there are any Lagrangian transport models that can be used in conjunction with ROMS to simulate the movement and transport of these heavy metals from ROMS outputs. Ideally, I'm looking for a model that can account for processes such as dispersion, dilution, sedimentation associated with heavy metals in the ocean.
If you have any information on specific models or recommended approaches for simulating heavy metal transport with ROMS, I would greatly appreciate hearing about them.
Thank you in advance for your help

[jivica]

I am using the open-source drift model OpenDrift, it has the native reader for ROMS outputs and many "modules", written in Python with the Xarray engine.

https://opendrift.github.io/

or for example radionuclides: https://opendrift.github.io/gallery/exa ... lides.html


Cheers,
Ivica

[jihene]

Thanks Ivica for your prompt response. I will look into the github repository of OpenDrift...Happy to know that it has already native reader for ROMS outputs.
Best regards,
Jihene

[ggerbi]

You can also use ROMSPath, which uses the same internal logic as floats in ROMS and some of the same formatting and code structure as LTRANS. (In the interest of disclosure, I was a low-level assistant to Eli Hunter in development.)

Code:
https://github.com/imcslatte/ROMSPath

Hunter et al, 2022, with a description and tests:
https://gmd.copernicus.org/articles/15/4297/2022/

You might have to customize it depending on what you want for settlement and resuspension, but it's written in a way that makes that straightforward.

Greg

[jxiong]

We recently compared several offline particle tracking packages that can read ROMS outputs, including OpenDrift and LTRANS. Hope it could provide some useful information for you

Paper: https://gmd.copernicus.org/articles/17/3341/2024/

Source codes of each package and example roms output: https://zenodo.org/records/10810102

-Jilian