Coastal and Regional Ocean Community model (CROCO)

CROCO is a new oceanic modeling system built upon ROMS_AGRIF and the non-hydrostatic kernel of SNH (under testing), gradually including algorithms from MARS3D (sediments)  and HYCOM (vertical coordinates). An important objective of CROCO is to provide the possibility to resolve very fine scales (especially in coastal area, and their interactions with larger scales. It is the oceanic component of a complex coupled system including various components as: atmosphere, waves, sediment transport, morphodynamics, biogeochemical cycles, and up to ecosystems. This version is still in development with changes on daily basis. Thus it should be use with care by experienced developers until its official release.

Regional Oceanic Modeling System with mesh refinement (ROMS_AGRIF)

Over the past decade, we have developed at UCLA, Rutgers University, and IRD a 3D numerical oceanic model intended for simulating currents, ecosystems, biogeochemical cycles, and sediment movements in various coastal regions. The IRD version of the code, ROMS_AGRIF, makes use of the AGRIF grid refinement procedure developed at the LJK-IMAG and is accompanied by a powerful toolbox for pre- and post-processing: ROMSTOOLS. This version is not evolving anymore (see CROCO description) but has been extensively tested. Therefore it's the one recommended for users looking for a stable version.


CROCO project: beta version (under development) is on Inria Forge

ROMS_AGRIF project is now frozen: last stable version 3.1.1 (July 2014)

See CHANGE LOG SECTION for Known problems and Fixes.

Users are encouraged to register at  the roms_agrif users mailing list (Low volume mailing list)



The IRD/INRIA version of the code, ROMS_AGRIF, made use of the AGRIF grid refinement procedure developed at Inria and proposed a powerful toolbox for ROMS pre- and post-processing: ROMSTOOLS. 

CROCO is both an upgrade of this work and a renewed approach to coastal modeling based on a fully integrative treatment of the regional earth system from the deep ocean to the nearshore zone. The new code is developed within a solid consortium of French partners: UPS, IFREMER, SHOM, CNRS, INRIA and IRD; associated with historical ROMS protagonists in the North and South (particularly UCLA, DGEO ...).


Because transition will occur within a projected period of 4 years, the present web site will keep its ROMS_AGRIF flavor for a while. This version keeps all the functionalities of ROMS_AGRIF (now frozen) and adds new ones (non-hydrostatic kernel ... ). The documentation will also gradually evolve ...


See the list of CROCO developers


Gildas Cambon

Centre IRD de Bretagne
B.P. 70 - 29280 Plouzane


Laurent Debreu

51, rue des Mathematiques
38041 Grenoble Cedex 9


Patrick Marchesiello

14, Avenue Edouard Belin
31401 Toulouse Cedex 9


Pierrick Penven

Centre IRD de Bretagne
B.P. 70 - 29280 Plouzane