Coastal and Regional Ocean COmmunity model

CROCO, Coastal and Regional Ocean COmmunity model

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 for CROCO is to resolve very fine scales (especially in the coastal area), and their interactions with larger scales. It is the oceanic component of a complex coupled system including various components, e.g., atmosphere, surface waves, marine sediments, biogeochemistry and ecosystems.

CROCO Version 1.2 official release is now available in the Download section. It includes new capabilities as non-hydrostatic kernel, ocean-wave-atmosphere coupling, sediment transport, new high-order numerical schemes for advection and mixing, a dedicated I/O server (XIOS), new online diagnoses, and new options for coastal configurations. A new version of CROCO_TOOLS accompany this release. CROCO will keep evolving and integrating new capabilities in the following years.

CROCO project: version 1.2


Because transition will occur within a projected period of 4 years, the present web site will keep its ROMS_AGRIF flavor for a while. The documentation will also gradually evolve to describe the code and model functionalities in more details …


Watch CROCO in action on Youtube


Two training sessions to CROCO model will be organized in October 2022. See dedicated page


New intermediate release CROCO v1.2.1

New release CROCO v1.2 is now available

Mailing list & Forum

We strongly encourage all users to join our mailing list (low traffic; announcements, updates, bug fixes):

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Visit CROCO users forum for discussions, and questions about the code and tools


See the list of CROCO developers