# Versions **URL:** https://nemo-ocean.discourse.group/c/versions/15.md?page=4 [Latest](https://nemo-ocean.discourse.group/latest.md) · [Categories](https://nemo-ocean.discourse.group/categories.md) · [Tags](https://nemo-ocean.discourse.group/tags.md) **Page:** 5 --- ## [Agrif and vertical remap](https://nemo-ocean.discourse.group/t/agrif-and-vertical-remap/588)
**Author:** [@Luc](https://nemo-ocean.discourse.group/u/Luc)\ **Replies:** 4\ **Last updated:** [24 November 2023 09:46 UTC](https://nemo-ocean.discourse.group/t/agrif-and-vertical-remap/588 "2023-11-24T09:46:49Z")
Hello all, I use DOMAINcfg to define a parent grid mesh, and some children. I define the vertical zps layers by specifying ppkt, ppacr, ppdzmin, pphmax in the &namdom namelist. Then, in &namcfg , I define jpkdta and jp… --- ## [Very poor scaling with OpenIFS + NEMO 4.2 + XIOS 3 (slow)](https://nemo-ocean.discourse.group/t/very-poor-scaling-with-openifs-nemo-4-2-xios-3-slow/576)
**Author:** [@joakim](https://nemo-ocean.discourse.group/u/joakim)\ **Replies:** 10\ **Last updated:** [17 November 2023 12:34 UTC](https://nemo-ocean.discourse.group/t/very-poor-scaling-with-openifs-nemo-4-2-xios-3-slow/576 "2023-11-17T12:34:40Z")
Good afternoon I recently did some test runs with a coupled model with OpenIFS 43r3 + NEMO 4.2 + XIOS 3. The resolutions are 100 km (OpenIFS) and eORCA025 L75, and output from both OpenIFS and NEMO are handled by XIOS. … --- ## [Internal wave-driven mixing parameterization input fields changed](https://nemo-ocean.discourse.group/t/internal-wave-driven-mixing-parameterization-input-fields-changed/589)
**Author:** [@rabbit](https://nemo-ocean.discourse.group/u/rabbit)\ **Replies:** 2\ **Last updated:** [16 November 2023 12:18 UTC](https://nemo-ocean.discourse.group/t/internal-wave-driven-mixing-parameterization-input-fields-changed/589 "2023-11-16T12:18:45Z")
Tidal mixing parameterization (activated with ln\_zdfiwm = .true.; input files prescribed in &namzdf\_iwm) has been reworked in v4.2. In previous versions it required 5 input fields (usually provided as 5 NetCDF files: m… --- ## [Estimate Amoc circulation](https://nemo-ocean.discourse.group/t/estimate-amoc-circulation/584)
**Author:** [@dramauh](https://nemo-ocean.discourse.group/u/dramauh)\ **Replies:** 1\ **Last updated:** [13 November 2023 07:31 UTC](https://nemo-ocean.discourse.group/t/estimate-amoc-circulation/584 "2023-11-13T07:31:13Z")
Dear Community, I am trying to compute the amoc in several CMIP6 models such as CMCC, IPSL, EC-Earth. I found a python code to compute the amoc in the ORCA 1 degree resolution, but the resulting amoc is too large (about… --- ## [DOMAINcfg 1-way nesting](https://nemo-ocean.discourse.group/t/domaincfg-1-way-nesting/450)
**Author:** [@qtqw](https://nemo-ocean.discourse.group/u/qtqw)\ **Replies:** 3\ **Last updated:** [24 October 2023 13:04 UTC](https://nemo-ocean.discourse.group/t/domaincfg-1-way-nesting/450 "2023-10-24T13:04:55Z")
I use DOMAINcfg to create a nested domain, e.g. files 1\_domain\_cfg.nc and domain\_cfg.nc I found that while creating a nested domain DOMAINcfg also changes bathymetry in parent domain in the area where nested domain is s… --- ## [Atmospheric pressure from a coupler](https://nemo-ocean.discourse.group/t/atmospheric-pressure-from-a-coupler/577)
**Author:** [@lambertn](https://nemo-ocean.discourse.group/u/lambertn)\ **Replies:** 0\ **Last updated:** [19 October 2023 13:35 UTC](https://nemo-ocean.discourse.group/t/atmospheric-pressure-from-a-coupler/577 "2023-10-19T13:35:43Z")
Hi, Giving the atmospheric pressure to NEMO through a coupler (sn\_rcv\_mslp) do not have any affect on the ocean dynamics. The field is indeed received in the sbccpl submodule, but the effect that it could have on the su… --- ## [Noise patterns in QG Leith viscosity field](https://nemo-ocean.discourse.group/t/noise-patterns-in-qg-leith-viscosity-field/574)
**Author:** [@tmwilder](https://nemo-ocean.discourse.group/u/tmwilder)\ **Replies:** 1\ **Last updated:** [17 October 2023 16:46 UTC](https://nemo-ocean.discourse.group/t/noise-patterns-in-qg-leith-viscosity-field/574 "2023-10-17T16:46:30Z")
Hello, We have written the QG Leith viscosity parameterisation into NEMO v4.0.4, and have got idealised and global forced configurations running without errors. However, there is a random pattern of large viscosity c… --- ## [Seg. fault after compiling XIOS and NEMO with openmpi 4.1 and intel 18](https://nemo-ocean.discourse.group/t/seg-fault-after-compiling-xios-and-nemo-with-openmpi-4-1-and-intel-18/573)
**Author:** [@spence-cgg](https://nemo-ocean.discourse.group/u/spence-cgg)\ **Replies:** 2\ **Last updated:** [17 October 2023 08:24 UTC](https://nemo-ocean.discourse.group/t/seg-fault-after-compiling-xios-and-nemo-with-openmpi-4-1-and-intel-18/573 "2023-10-17T08:24:19Z")
Hi, I appreciate this probably isn’t an easy one without giving a lot of information about my environment and compilation settings, but I’m at a loss so any suggestions would be welcome… I’m using openmpi 4.1.0 with in… --- ## [Contrasting Behaviour in Reading bdydtav files between GNU and PGI Builds](https://nemo-ocean.discourse.group/t/contrasting-behaviour-in-reading-bdydtav-files-between-gnu-and-pgi-builds/565)
**Author:** [@nick.heavens-cgg](https://nemo-ocean.discourse.group/u/nick.heavens-cgg)\ **Replies:** 0\ **Last updated:** [2 October 2023 08:55 UTC](https://nemo-ocean.discourse.group/t/contrasting-behaviour-in-reading-bdydtav-files-between-gnu-and-pgi-builds/565 "2023-10-02T08:55:48Z")
I have been trying to build NEMO with the legacy Portland Group compilers (part of the Nvidia HPC SDK version 23.7). I found the issue three years ago documented in #2579 (PGI compiler does allow read values from namelis… --- ## [Input data Format](https://nemo-ocean.discourse.group/t/input-data-format/564)
**Author:** [@elsy](https://nemo-ocean.discourse.group/u/elsy)\ **Replies:** 1\ **Last updated:** [29 September 2023 06:58 UTC](https://nemo-ocean.discourse.group/t/input-data-format/564 "2023-09-29T06:58:16Z")
Hi, I’m new in NEMO and try to run the storm surge in global domain using the ERA5 forcing, this data have in the description the scale\_factor and add\_offset. My question is, I want to know if the model use this descript… --- ## [Gfortran Nemo + Drakkar + SI3 compilation](https://nemo-ocean.discourse.group/t/gfortran-nemo-drakkar-si3-compilation/556)
**Author:** [@avemelan](https://nemo-ocean.discourse.group/u/avemelan)\ **Replies:** 5\ **Last updated:** [24 August 2023 12:00 UTC](https://nemo-ocean.discourse.group/t/gfortran-nemo-drakkar-si3-compilation/556 "2023-08-24T12:00:54Z")
Hello. We have working configuration for the North Antlantic region with Drakkar + Nemo + SI3 compiled with Intel compilers on Intel CPU. We also run this configuration inside Docker container. We recently bought new mac… --- ## [Help to use module "diaar5"](https://nemo-ocean.discourse.group/t/help-to-use-module-diaar5/552)
**Author:** [@elsy](https://nemo-ocean.discourse.group/u/elsy)\ **Replies:** 1\ **Last updated:** [10 August 2023 12:04 UTC](https://nemo-ocean.discourse.group/t/help-to-use-module-diaar5/552 "2023-08-10T12:04:08Z")
Assistance with “key\_diaar5,” my intention is to simulate sea level using version 4.0.6 of NEMO. In the manual, they describe the “diaar5” module; however, they do not indicate whether this version includes this “key.” I… --- ## [Restart fails with ice variables not found](https://nemo-ocean.discourse.group/t/restart-fails-with-ice-variables-not-found/541)
**Author:** [@knaughten](https://nemo-ocean.discourse.group/u/knaughten)\ **Replies:** 4\ **Last updated:** [2 August 2023 16:32 UTC](https://nemo-ocean.discourse.group/t/restart-fails-with-ice-variables-not-found/541 "2023-08-02T16:32:57Z")
Hello, I am new to NEMO so apologies if this is a beginner question! I am trying out a colleague’s configuration on a different HPC facility, using NEMO 4.2. When I try to restart with the restart files he provided, it … --- ## [ASCII output and diagnostics](https://nemo-ocean.discourse.group/t/ascii-output-and-diagnostics/544)
**Author:** [@tmwilder](https://nemo-ocean.discourse.group/u/tmwilder)\ **Replies:** 1\ **Last updated:** [1 August 2023 08:56 UTC](https://nemo-ocean.discourse.group/t/ascii-output-and-diagnostics/544 "2023-08-01T08:56:50Z")
I am attempting to diagnose some possible errors in my code through the use of print statements in ocean.output and timestep diagnostics written to netcdf. However, I am encountering a few issues, which I hope someone ca… --- ## [Handling of horizontal gradients near rough bathymetry](https://nemo-ocean.discourse.group/t/handling-of-horizontal-gradients-near-rough-bathymetry/529)
**Author:** [@tmwilder](https://nemo-ocean.discourse.group/u/tmwilder)\ **Replies:** 1\ **Last updated:** [30 June 2023 07:57 UTC](https://nemo-ocean.discourse.group/t/handling-of-horizontal-gradients-near-rough-bathymetry/529 "2023-06-30T07:57:19Z")
This may be a basic question but I am curious to know how nemo handles the computation of horizontal gradients next to a boundary edge, such as in regions of rough ocean bathymetry. In a routine I am implementing I need … --- ## [NEMO forced by WW3 outputs](https://nemo-ocean.discourse.group/t/nemo-forced-by-ww3-outputs/528)
**Author:** [@buffy](https://nemo-ocean.discourse.group/u/buffy)\ **Replies:** 0\ **Last updated:** [27 June 2023 05:10 UTC](https://nemo-ocean.discourse.group/t/nemo-forced-by-ww3-outputs/528 "2023-06-27T05:10:24Z")
Hello, Currently, I’m trying to insert wavewatch3 (ww3 v.6.07) outputs into 2-dimensional surge model based on NEMO v3.6. For this, I have to fill namsbc\_wave, but I’m wondering which ww3 outputs match to sn\_cdg (drag\_… --- ## [Coordinates.nc file for DOMAINcfg](https://nemo-ocean.discourse.group/t/coordinates-nc-file-for-domaincfg/432)
**Author:** [@rchman](https://nemo-ocean.discourse.group/u/rchman)\ **Replies:** 4\ **Last updated:** [16 June 2023 14:40 UTC](https://nemo-ocean.discourse.group/t/coordinates-nc-file-for-domaincfg/432 "2023-06-16T14:40:19Z")
Hello, I’m trying to create a new global ORCA1 grid with different vertical levels via the DOMAINcfg tool of NEMO V4.2. The DOAMINcfg tool needs a predefined horizontal grid that has a specific name “coordinates.nc”. Bu… --- ## [NEMO 4.2.0 namelist: Questions about top/bottom fricition & horizontal advection/diffusion schemes](https://nemo-ocean.discourse.group/t/nemo-4-2-0-namelist-questions-about-top-bottom-fricition-horizontal-advection-diffusion-schemes/522)
**Author:** [@Nicolas\_Gonzalez](https://nemo-ocean.discourse.group/u/Nicolas_Gonzalez)\ **Replies:** 2\ **Last updated:** [9 June 2023 12:50 UTC](https://nemo-ocean.discourse.group/t/nemo-4-2-0-namelist-questions-about-top-bottom-fricition-horizontal-advection-diffusion-schemes/522 "2023-06-09T12:50:57Z")
Dear all, I am working with NEMO 4.2.0 on a regional configuration of the Mediterranean Sea (≃ 7km; 75 z-vertical levels with partial steps). Based on the NEMO 4.2.0 reference manual (NEMO ocean engine | Zenodo), I almo… --- ## [Turbulent diffusion coefficients in GLS scheme](https://nemo-ocean.discourse.group/t/turbulent-diffusion-coefficients-in-gls-scheme/514)
**Author:** [@qtqw](https://nemo-ocean.discourse.group/u/qtqw)\ **Replies:** 1\ **Last updated:** [22 May 2023 06:25 UTC](https://nemo-ocean.discourse.group/t/turbulent-diffusion-coefficients-in-gls-scheme/514 "2023-05-22T06:25:17Z")
I use GLS closure turbulent scheme. I found that in most cases turbulent diffusion coefficients (AVT and AVM) are 0 at lower model levels. As far as I understand,in GLS scheme if stratification is stable AVT and AVM sh… --- ## [Calculation of sea surface height according to change of reference pressure](https://nemo-ocean.discourse.group/t/calculation-of-sea-surface-height-according-to-change-of-reference-pressure/503)
**Author:** [@yeon](https://nemo-ocean.discourse.group/u/yeon)\ **Replies:** 4\ **Last updated:** [12 May 2023 06:05 UTC](https://nemo-ocean.discourse.group/t/calculation-of-sea-surface-height-according-to-change-of-reference-pressure/503 "2023-05-12T06:05:15Z")
Dear all, I am currently conducting research on predicting storm surge with NEMO-surge. A sensitivity test was conducted by changing the reference pressure in the NAMELIST, but there was no change in the sea surface hei… --- ## [Values for lateral mixing coefficients](https://nemo-ocean.discourse.group/t/values-for-lateral-mixing-coefficients/481)
**Author:** [@atb299](https://nemo-ocean.discourse.group/u/atb299)\ **Replies:** 3\ **Last updated:** [2 May 2023 10:00 UTC](https://nemo-ocean.discourse.group/t/values-for-lateral-mixing-coefficients/481 "2023-05-02T10:00:48Z")
When selecting one of the ‘nn\_ahm\_ijk\_t’ option to supply 2D or 3D fields for ahm{t,f}, should the values supplied for ‘t’ and ‘f’ be the same (if so why require two variables?), or are there cases when they can or shoul… --- ## [Error compiling XIOS-trunk for NEMO 4.2](https://nemo-ocean.discourse.group/t/error-compiling-xios-trunk-for-nemo-4-2/479)
**Author:** [@mauzer83](https://nemo-ocean.discourse.group/u/mauzer83)\ **Replies:** 1\ **Last updated:** [30 April 2023 15:41 UTC](https://nemo-ocean.discourse.group/t/error-compiling-xios-trunk-for-nemo-4-2/479 "2023-04-30T15:41:06Z")
Hello. I have a problems when trying to compile XIOS-trunk. With xios 2.5 have no problems. But how i can understand 2.5 not working with 4.2 trying to compile with options %NCDF\_INC -I$base/libraries/inc… --- ## [Cannot run model for more than 70 years/compiling model with 64 bit integers](https://nemo-ocean.discourse.group/t/cannot-run-model-for-more-than-70-years-compiling-model-with-64-bit-integers/497)
**Author:** [@Samar](https://nemo-ocean.discourse.group/u/Samar)\ **Replies:** 0\ **Last updated:** [30 April 2023 14:39 UTC](https://nemo-ocean.discourse.group/t/cannot-run-model-for-more-than-70-years-compiling-model-with-64-bit-integers/497 "2023-04-30T14:39:46Z")
Hello, I’m trying to do a long model spin-up with NEMO 4.2. This is for GYRE\_PISCES, although that doesn’t really matter. I set nn\_itend=12960000 to do a 3000 year long spin-up and got this error: ===\>\>\> : E R R O R … --- ## [CANAL test case](https://nemo-ocean.discourse.group/t/canal-test-case/495)
**Author:** [@poddo](https://nemo-ocean.discourse.group/u/poddo)\ **Replies:** 0\ **Last updated:** [28 April 2023 13:41 UTC](https://nemo-ocean.discourse.group/t/canal-test-case/495 "2023-04-28T13:41:05Z")
Hi All, is there any way to reproduce the CANAL test case animation provided in the web-page? I would like to use that for didactic purposes, but I have the impression that none of the provided options for the initial … --- ## [Error compiling nemo: error #6404... must have an explicit type](https://nemo-ocean.discourse.group/t/error-compiling-nemo-error-6404-must-have-an-explicit-type/473)
**Author:** [@tmwilder](https://nemo-ocean.discourse.group/u/tmwilder)\ **Replies:** 2\ **Last updated:** [14 April 2023 11:04 UTC](https://nemo-ocean.discourse.group/t/error-compiling-nemo-error-6404-must-have-an-explicit-type/473 "2023-04-14T11:04:08Z")
I am trying to compute an additional term (nmlnqg) in zdfmxl.F90 and use it in ldfdyn.F90, however I am receiving the following error when trying to compile BLD/ppsrc/nemo/ldfdyn.f90(717): error #6404: This name does no… --- ## [Nemo.exe crashes after a few time steps when using AGRIF](https://nemo-ocean.discourse.group/t/nemo-exe-crashes-after-a-few-time-steps-when-using-agrif/469)
**Author:** [@ngrivault](https://nemo-ocean.discourse.group/u/ngrivault)\ **Replies:** 4\ **Last updated:** [6 April 2023 12:01 UTC](https://nemo-ocean.discourse.group/t/nemo-exe-crashes-after-a-few-time-steps-when-using-agrif/469 "2023-04-06T12:01:36Z")
Hello everyone, I’m setting up a 1 to 5 AGRIF nest into our NORDIC configuration with NEMO 4.2 and I’m facing a nemo.exe crash issue. The configuration consists on our NORDIC regional configuration and a nest in the Bal… --- ## [Gitlab acess and siren](https://nemo-ocean.discourse.group/t/gitlab-acess-and-siren/472)
**Author:** [@rpennel](https://nemo-ocean.discourse.group/u/rpennel)\ **Replies:** 0\ **Last updated:** [5 April 2023 11:38 UTC](https://nemo-ocean.discourse.group/t/gitlab-acess-and-siren/472 "2023-04-05T11:38:40Z")
Hi, not sure at all this is the good place but here is my question. I think I found some issues in the SIREN tool, my goal was to explain it along with a fix in an issue on the NEMO gitlab. Unfortunately, I tried some… --- ## [Coupled OpenIFS+NEMO4.2+XIOS+OASIS freezes](https://nemo-ocean.discourse.group/t/coupled-openifs-nemo4-2-xios-oasis-freezes/454)
**Author:** [@joakim](https://nemo-ocean.discourse.group/u/joakim)\ **Replies:** 3\ **Last updated:** [15 March 2023 12:46 UTC](https://nemo-ocean.discourse.group/t/coupled-openifs-nemo4-2-xios-oasis-freezes/454 "2023-03-15T12:46:39Z")
Good evening I have started to upgrade from NEMO 3.6 to NEMO 4.2 in my coupled model. This also means upgrading XIOS from 2.5 to the latest trunk. Unfortunately the new model freezes during the “definition” phase of OA… --- ## ['ref\_wgts' - runtime error](https://nemo-ocean.discourse.group/t/ref-wgts-runtime-error/456)
**Author:** [@Phil](https://nemo-ocean.discourse.group/u/Phil)\ **Replies:** 0\ **Last updated:** [13 March 2023 08:13 UTC](https://nemo-ocean.discourse.group/t/ref-wgts-runtime-error/456 "2023-03-13T08:13:12Z")
Greetings everyone! My project stucked with following error, that is linked with parameter ‘ref\_wgts’ : “Fortran runtime error: Index ‘5’ of dimension 1 of array ‘ref\_wgts’ outside of expected range (4:1)” In addition… --- ## [Preventing NetCDF files from corruption in case of NEMO crash](https://nemo-ocean.discourse.group/t/preventing-netcdf-files-from-corruption-in-case-of-nemo-crash/455)
**Author:** [@qtqw](https://nemo-ocean.discourse.group/u/qtqw)\ **Replies:** 1\ **Last updated:** [10 March 2023 17:55 UTC](https://nemo-ocean.discourse.group/t/preventing-netcdf-files-from-corruption-in-case-of-nemo-crash/455 "2023-03-10T17:55:07Z")
As I understand from the topic there is no way to recover an output NetCDF file after a NEMO crash. The reason is that .nc-file is not closed properly. Is it possible to close .nc-file during NEMO modelling? Or maybe… [Previous page](https://nemo-ocean.discourse.group/c/versions/15.md?page=3) [Next page](https://nemo-ocean.discourse.group/c/versions/15.md?page=5)