# Latest **URL:** https://forum.croco-ocean.org/latest.md [Latest](https://forum.croco-ocean.org/latest.md) · [Categories](https://forum.croco-ocean.org/categories.md) · [Tags](https://forum.croco-ocean.org/tags.md) --- ## [Welcome to CROCO-Ocean community forum! 👋](https://forum.croco-ocean.org/t/welcome-to-croco-ocean-community-forum/5)
**Author:** [@system](https://forum.croco-ocean.org/u/system)\ **Replies:** 0\ **Last updated:** [November 24, 2023, 8:43am UTC](https://forum.croco-ocean.org/t/welcome-to-croco-ocean-community-forum/5 "2023-11-24T08:43:57Z")
We are so glad you joined us. CROCO-Ocean community forum Here are some things you can do to get started: :handshake: Contribute by commenting, sharing your own perspective, asking questions, or offering feedback in … --- ## [Major boundary-generation speedup and potential interpolation issues](https://forum.croco-ocean.org/t/major-boundary-generation-speedup-and-potential-interpolation-issues/7704)
**Author:** [@dpereira12](https://forum.croco-ocean.org/u/dpereira12)\ **Replies:** 0\ **Last updated:** [October 16, 2026, 2:25pm UTC](https://forum.croco-ocean.org/t/major-boundary-generation-speedup-and-potential-interpolation-issues/7704 "2026-10-16T14:25:19Z")
Hello everyone, I am using CROCO Pytools v2.0.5 (2026-06-22) to generate hourly boundary conditions from Copernicus IBI data for a high-resolution, interannual CROCO simulation around the Canary Islands. During preproc… --- ## [Compilation error with DIAGNOSTICS\_TS\_MLD\_DENS in CROCO v2.1.3](https://forum.croco-ocean.org/t/compilation-error-with-diagnostics-ts-mld-dens-in-croco-v2-1-3/7698)
**Author:** [@Fanny-Chenillat](https://forum.croco-ocean.org/u/Fanny-Chenillat)\ **Replies:** 8\ **Last updated:** [October 12, 2026, 1:32pm UTC](https://forum.croco-ocean.org/t/compilation-error-with-diagnostics-ts-mld-dens-in-croco-v2-1-3/7698 "2026-10-12T13:32:38Z")
Hi everyone, In the latest version of CROCO (v2.1.3), I encountered a compilation error when using the CPP key DIAGNOSTICS\_TS\_MLD\_DENS (activated along with DIAGNOSTICS\_TS\_MLD). The compiler failed because the variable… --- ## [Error in sign of the non-local term of the vertical turbulent flux in KPP scheme](https://forum.croco-ocean.org/t/error-in-sign-of-the-non-local-term-of-the-vertical-turbulent-flux-in-kpp-scheme/7699)
**Author:** [@viktorvoncarnage](https://forum.croco-ocean.org/u/viktorvoncarnage)\ **Replies:** 1\ **Last updated:** [October 9, 2026, 11:31am UTC](https://forum.croco-ocean.org/t/error-in-sign-of-the-non-local-term-of-the-vertical-turbulent-flux-in-kpp-scheme/7699 "2026-10-09T11:31:26Z")
Hello, I was informed of an (apparently) known bug in croco’s code concerning the non-local contribution of the vertical turbulent flux in the KPP scheme. It is located in the file “croco-vX.X.X/OCEAN/step3d\_t.F”, in li… --- ## [CROCO Webinar Series: October 8th – Wave-resolving nearshore configurations](https://forum.croco-ocean.org/t/croco-webinar-series-october-8th-wave-resolving-nearshore-configurations/7688)
**Author:** [@eleboued](https://forum.croco-ocean.org/u/eleboued)\ **Replies:** 1\ **Last updated:** [October 9, 2026, 7:45am UTC](https://forum.croco-ocean.org/t/croco-webinar-series-october-8th-wave-resolving-nearshore-configurations/7688 "2026-10-09T07:45:54Z")
Dear colleagues, We are pleased to announce the third webinar dedicated to the CROCO (Coastal and Regional Ocean Community) model. Setting up a wave-resolving nearshore configuration in CROCO Speaker: Dr Simon Treillo… --- ## [SWASH test-case inconsistency](https://forum.croco-ocean.org/t/swash-test-case-inconsistency/7690)
**Author:** [@MoeinDst](https://forum.croco-ocean.org/u/MoeinDst)\ **Replies:** 6\ **Last updated:** [October 1, 2026, 6:06pm UTC](https://forum.croco-ocean.org/t/swash-test-case-inconsistency/7690 "2026-10-01T18:06:21Z")
Hello CROCO community. Past ROMS and new CROCO user here. I’ve been working on reproducing the SWASH test-case and noticed a possible inconsistency regarding the GLOBEX experiment used as the reference. Marchesiello et… --- ## [Query about need to change in Cgrid\_transformation\_tools.py](https://forum.croco-ocean.org/t/query-about-need-to-change-in-cgrid-transformation-tools-py/7694)
**Author:** [@swapnil](https://forum.croco-ocean.org/u/swapnil)\ **Replies:** 2\ **Last updated:** [September 28, 2026, 8:08am UTC](https://forum.croco-ocean.org/t/query-about-need-to-change-in-cgrid-transformation-tools-py/7694 "2026-09-28T08:08:36Z")
Hi, In mostly python base croco\_pytools have a one file called Cgrid\_transformation\_tools.py inside the prepro/Modules . During reading the code found the Quadratic output shows very suspicious. Its very confused me. … --- ## [Announcing CROCO\_PYTOOLS v2.0.6](https://forum.croco-ocean.org/t/announcing-croco-pytools-v2-0-6/7693)
**Author:** [@gcambon](https://forum.croco-ocean.org/u/gcambon)\ **Replies:** 0\ **Last updated:** [September 24, 2026, 12:52pm UTC](https://forum.croco-ocean.org/t/announcing-croco-pytools-v2-0-6/7693 "2026-09-24T12:52:39Z")
Dear CROCO community, We are pleased to announce the release of croco\_pytools 2.0.6. This is a maintenance release with two targeted fixes: - gfortran compatibility : recent versions of gfortran (14+) have become str… --- ## [A diagnostic-output bug and a verified fix for CROCO v.2.1.3 (released April 2026)](https://forum.croco-ocean.org/t/a-diagnostic-output-bug-and-a-verified-fix-for-croco-v-2-1-3-released-april-2026/7691)
**Author:** [@rahulpai](https://forum.croco-ocean.org/u/rahulpai)\ **Replies:** 1\ **Last updated:** [September 18, 2026, 7:44am UTC](https://forum.croco-ocean.org/t/a-diagnostic-output-bug-and-a-verified-fix-for-croco-v-2-1-3-released-april-2026/7691 "2026-09-18T07:44:49Z")
Hi everyone, I would like to report a diagnostic-output bug and a verified fix for CROCO v.2.1.3 (released April 2026), which we encountered while running a regional configuration of the Arabian Gulf using the BULK\_FLUX… --- ## [PhD Scholarships at the University of Waikato](https://forum.croco-ocean.org/t/phd-scholarships-at-the-university-of-waikato/7687)
**Author:** [@lcbernardo](https://forum.croco-ocean.org/u/lcbernardo)\ **Replies:** 0\ **Last updated:** [September 10, 2026, 9:14am UTC](https://forum.croco-ocean.org/t/phd-scholarships-at-the-university-of-waikato/7687 "2026-09-10T09:14:05Z")
I’d like to pass on information from my colleague on PhD scholarship opportunities at the University of Waikato in New Zealand. For more details, please see below: \[Fully funded PhD positions\] Affiliation: School of E… --- ## [Sediment Initialization file generation](https://forum.croco-ocean.org/t/sediment-initialization-file-generation/7686)
**Author:** [@sajuscaria](https://forum.croco-ocean.org/u/sajuscaria)\ **Replies:** 2\ **Last updated:** [September 2, 2026, 1:16pm UTC](https://forum.croco-ocean.org/t/sediment-initialization-file-generation/7686 "2026-09-02T13:16:39Z")
Hai I am just trying the coastal configuration just like the Vilaine case (for another river). In Vilaine case I see a file like sed\_init.nc. Is there a way (Matlab script ot Python script) to generate this file as per … --- ## ["W\_HADV\_TVD" compilation problem](https://forum.croco-ocean.org/t/w-hadv-tvd-compilation-problem/699)
**Author:** [@chinchi](https://forum.croco-ocean.org/u/chinchi)\ **Replies:** 2\ **Last updated:** [August 27, 2026, 3:58pm UTC](https://forum.croco-ocean.org/t/w-hadv-tvd-compilation-problem/699 "2026-08-27T15:58:39Z")
When cpp defines W\_HADV\_TVD and W\_VADV\_TVD, compilation fails in v2.0.0. But it can be compiled successfully in v1.3.1. How can I modify to compile successfully? Thank you. ps:ubuntu 20.04+gfortran The compilation er… --- ## [How use different files as fluxes](https://forum.croco-ocean.org/t/how-use-different-files-as-fluxes/199)
**Author:** [@javadi](https://forum.croco-ocean.org/u/javadi)\ **Replies:** 9\ **Last updated:** [August 25, 2026, 3:50pm UTC](https://forum.croco-ocean.org/t/how-use-different-files-as-fluxes/199 "2026-08-25T15:50:11Z")
Hi I made grids for my basin. Now I am going to make fluxes and initial condition files. Unfortunately, there is no data on coads5 for my basin and I have to download each file separately from different websites like EC… --- ## [BBL sets wave-modulated bottom stress to zero when SEDIMENT is off](https://forum.croco-ocean.org/t/bbl-sets-wave-modulated-bottom-stress-to-zero-when-sediment-is-off/7665)
**Author:** [@GilesFearon](https://forum.croco-ocean.org/u/GilesFearon)\ **Replies:** 2\ **Last updated:** [August 16, 2026, 3:37pm UTC](https://forum.croco-ocean.org/t/bbl-sets-wave-modulated-bottom-stress-to-zero-when-sediment-is-off/7665 "2026-08-16T15:37:23Z")
Hello I have implemented a CROCO-WW3 coupled simulation with BBL activated (as per the default coupling cpp keys). I noticed that the bottom stress seen by the model goes to zero in the shallow regions where one would i… --- ## [Are AGRIF and MPI\_NOLAND compatible?](https://forum.croco-ocean.org/t/are-agrif-and-mpi-noland-compatible/7625)
**Author:** [@Aparies](https://forum.croco-ocean.org/u/Aparies)\ **Replies:** 3\ **Last updated:** [August 12, 2026, 7:08pm UTC](https://forum.croco-ocean.org/t/are-agrif-and-mpi-noland-compatible/7625 "2026-08-12T19:08:56Z")
Hello, I am currently trying to run CROCO using AGRIF2WAY with MPI\_NOLAND, and I was wondering whether these two cpp keys are compatible with each other. I am currently encountering the following error: MAIN: started … --- ## [HYbrid OpenMP/MPI parallelization in Croco](https://forum.croco-ocean.org/t/hybrid-openmp-mpi-parallelization-in-croco/7684)
**Author:** [@Matt29](https://forum.croco-ocean.org/u/Matt29)\ **Replies:** 1\ **Last updated:** [August 12, 2026, 4:16pm UTC](https://forum.croco-ocean.org/t/hybrid-openmp-mpi-parallelization-in-croco/7684 "2026-08-12T16:16:09Z")
Hello, For those interested i just fixed the implementation of hybrid parallelization with MPI and OpenMP in Croco I created a branch from croco-V2.1.3 in my own gihub repo (for now i have no access to Croco Gitlab). i… --- ## [Option RIVER\_RAMP](https://forum.croco-ocean.org/t/option-river-ramp/674)
**Author:** [@limramirezmo](https://forum.croco-ocean.org/u/limramirezmo)\ **Replies:** 5\ **Last updated:** [August 11, 2026, 3:28pm UTC](https://forum.croco-ocean.org/t/option-river-ramp/674 "2026-08-11T15:28:51Z")
Hello everyone, I’m currently attempting to simulate a real case under specific climatology conditions. My scenario involves a river inlet with an average flow rate of 5000 m3/s, and the climatology condition for this r… --- ## [Postdoc position on ocean mixing](https://forum.croco-ocean.org/t/postdoc-position-on-ocean-mixing/7678)
**Author:** [@lroblou](https://forum.croco-ocean.org/u/lroblou)\ **Replies:** 1\ **Last updated:** [August 6, 2026, 7:43am UTC](https://forum.croco-ocean.org/t/postdoc-position-on-ocean-mixing/7678 "2026-08-06T07:43:05Z")
Dear all, we are advertizing an exciting post-doctoral research position (16 months) starting this autumn within our group at Laboratoire d’Aérologie, Toulouse. Funded by ANR MOTIONS project (Multiscale Oceanic simulat… --- ## [Coastal Ocean Modeler position at The Ocean Cleanup](https://forum.croco-ocean.org/t/coastal-ocean-modeler-position-at-the-ocean-cleanup/7681)
**Author:** [@vesnaber](https://forum.croco-ocean.org/u/vesnaber)\ **Replies:** 0\ **Last updated:** [August 4, 2026, 1:17pm UTC](https://forum.croco-ocean.org/t/coastal-ocean-modeler-position-at-the-ocean-cleanup/7681 "2026-08-04T13:17:11Z")
The Ocean Cleanup has an open position for a Coastal Ocean Modeler to work full time in Rotterdam. The research team is seeking candidates who are familiar with ocean circulation models and can use the results from these… --- ## [BENGUELA case fails with croco-GPU with CROCO\_QH or NBQ](https://forum.croco-ocean.org/t/benguela-case-fails-with-croco-gpu-with-croco-qh-or-nbq/7679)
**Author:** [@Konstantinos\_K](https://forum.croco-ocean.org/u/Konstantinos_K)\ **Replies:** 2\ **Last updated:** [July 31, 2026, 2:59pm UTC](https://forum.croco-ocean.org/t/benguela-case-fails-with-croco-gpu-with-croco-qh-or-nbq/7679 "2026-07-31T14:59:15Z")
I am testing the standard BENGUELA\_LR realistic case with # define OPENACC, for croco GPU. I am using the latest croco 2.1.3 on a Ubuntu 26.04 LTS on a Thinkpad P1 with the Nvidia RTX 2000 Ada pro graphics card. After:… --- ## [Use wkb\_wwave and parameters in croco\_inter.in](https://forum.croco-ocean.org/t/use-wkb-wwave-and-parameters-in-croco-inter-in/7676)
**Author:** [@SusyDuCol](https://forum.croco-ocean.org/u/SusyDuCol)\ **Replies:** 1\ **Last updated:** [July 17, 2026, 4:54am UTC](https://forum.croco-ocean.org/t/use-wkb-wwave-and-parameters-in-croco-inter-in/7676 "2026-07-17T04:54:57Z")
Hello, I am using MRL\_WCI at my configuration with WKB\_WWAVE, WAVE\_STREAMING, WAVE\_FRICTION and WAVE\_RAMP. The WKB open boundaries are active at the north, south and west boundaries, and I generate the boundary forcing … --- ## [CROCO w/ GPU compilation error](https://forum.croco-ocean.org/t/croco-w-gpu-compilation-error/7675)
**Author:** [@AndresSepulveda](https://forum.croco-ocean.org/u/AndresSepulveda)\ **Replies:** 10\ **Last updated:** [July 10, 2026, 10:24pm UTC](https://forum.croco-ocean.org/t/croco-w-gpu-compilation-error/7675 "2026-07-10T22:24:01Z")
Hi, I wanto to compile croco-v2.1.3 so I’ve added #define openacc in cppdefs.h and selectec nvfortran as a compiler in jobcomp. The following error appears. Any idea how to solve it? nvfortran -c -g -fast -r8 -i4 -mc… --- ## [Regarding the issue encountered with floats](https://forum.croco-ocean.org/t/regarding-the-issue-encountered-with-floats/7673)
**Author:** [@hqcmax](https://forum.croco-ocean.org/u/hqcmax)\ **Replies:** 6\ **Last updated:** [July 6, 2026, 12:40pm UTC](https://forum.croco-ocean.org/t/regarding-the-issue-encountered-with-floats/7673 "2026-07-06T12:40:00Z")
Is Croco still unable to perform Lagrangian particle simulation using floats at present? Are there any better or alternative methods available?Thanks！ --- ## [Monthly files with time shift](https://forum.croco-ocean.org/t/monthly-files-with-time-shift/7674)
**Author:** [@Jellyfish](https://forum.croco-ocean.org/u/Jellyfish)\ **Replies:** 0\ **Last updated:** [July 6, 2026, 10:53am UTC](https://forum.croco-ocean.org/t/monthly-files-with-time-shift/7674 "2026-07-06T10:53:52Z")
Hi everyone, am running an interannual CROCO simulation (v2.1.0) using run\_croco\_inter.bash with monthly outputs The relevant output settings are: ND\_AVG = 1 ND\_HIS = -1 ND\_RST = -1 RSTFLAG = 1 However, I noticed tha… --- ## [Odd boundary effect in temperature initialization](https://forum.croco-ocean.org/t/odd-boundary-effect-in-temperature-initialization/7672)
**Author:** [@kb1901](https://forum.croco-ocean.org/u/kb1901)\ **Replies:** 0\ **Last updated:** [June 30, 2026, 4:00pm UTC](https://forum.croco-ocean.org/t/odd-boundary-effect-in-temperature-initialization/7672 "2026-06-30T16:00:47Z")
I am working with CROCO to study Hamilton Harbour, a smaller scale embayment in Ontario with length scales of 1-10 km. I’ve successfully been able to run the model by supplying a .nc grid file derived from a bathymetry f… --- ## [BLOW UP error on custom bathymetry dataset - Hamilton Harbour](https://forum.croco-ocean.org/t/blow-up-error-on-custom-bathymetry-dataset-hamilton-harbour/7671)
**Author:** [@kb1901](https://forum.croco-ocean.org/u/kb1901)\ **Replies:** 3\ **Last updated:** [June 30, 2026, 3:24pm UTC](https://forum.croco-ocean.org/t/blow-up-error-on-custom-bathymetry-dataset-hamilton-harbour/7671 "2026-06-30T15:24:39Z")
Hi, I’m using CROCO to study circulation in a small embayment in Ontario called Hamilton Harbour. It is roughly a 10km x 6km harbour in the shape of a triangle, and the resolution of the grid is 40 meters. I am using a … --- ## [Unexpected behaviour when may\_day\_flag is raised](https://forum.croco-ocean.org/t/unexpected-behaviour-when-may-day-flag-is-raised/7661)
**Author:** [@rongoldman](https://forum.croco-ocean.org/u/rongoldman)\ **Replies:** 6\ **Last updated:** [June 24, 2026, 9:28am UTC](https://forum.croco-ocean.org/t/unexpected-behaviour-when-may-day-flag-is-raised/7661 "2026-06-24T09:28:17Z")
Hi, I’m not sure if here is the right place to report this. If there is a better place, please let me know. When my CROCO implementation (v2.1.3 with MPI) encounters a meteorology file with missing time step, get\_bulk … --- ## [Announcing CROCO\_PYTOOLS v2.0.5](https://forum.croco-ocean.org/t/announcing-croco-pytools-v2-0-5/7670)
**Author:** [@gcambon](https://forum.croco-ocean.org/u/gcambon)\ **Replies:** 0\ **Last updated:** [June 22, 2026, 9:47am UTC](https://forum.croco-ocean.org/t/announcing-croco-pytools-v2-0-5/7670 "2026-06-22T09:47:00Z")
Dear CROCO Users, We are pleased to announce the release of CROCO\_PYTOOLS v2.0.5, a minor update of the Python toolbox for the pre- and post-processing of CROCO inputs and outputs. This release includes only bug fixes. … --- ## [LP Bathymetry Smoothing - python](https://forum.croco-ocean.org/t/lp-bathymetry-smoothing-python/7669)
**Author:** [@MartinV](https://forum.croco-ocean.org/u/MartinV)\ **Replies:** 0\ **Last updated:** [June 17, 2026, 2:28pm UTC](https://forum.croco-ocean.org/t/lp-bathymetry-smoothing-python/7669 "2026-06-17T14:28:35Z")
Hi everyone! Ivica Janeković published a python code for LP smoothing - ”Python library for smoothing ocean model (ROMS) bathymetry to satisfy rx0 and rx1 roughness constraints using Linear Programming and iterative met… --- ## [Wrong i-index in get\_bry.F](https://forum.croco-ocean.org/t/wrong-i-index-in-get-bry-f/7668)
**Author:** [@swapnil](https://forum.croco-ocean.org/u/swapnil)\ **Replies:** 0\ **Last updated:** [June 12, 2026, 10:00am UTC](https://forum.croco-ocean.org/t/wrong-i-index-in-get-bry-f/7668 "2026-06-12T10:00:06Z")
Hi, Can any one check this get\_bry.F issues: zetabry\_west(j) = zetabry\_west(j) - (patm2d(Istr,j)-paref)/(g\*rho0) possible change: zetabry\_west(j) = zetabry\_west(j) - (patm2d(IstrR,j)-paref)/(g\*rho0) east, north, a… [Next page](https://forum.croco-ocean.org/latest.md?page=1)