Search found 22 matches

by isoares
Fri Jul 07, 2023 12:09 pm
Forum: ROMS Ecosystem
Topic: how to impose alkalinity surface flux
Replies: 0
Views: 6631

how to impose alkalinity surface flux

Dear ROMS Ecosystem users, I am using the FENNEL bio model with CARBON and DENITRIFICATION #define BIO_FENNEL #ifdef BIO_FENNEL # define CARBON # define DENITRIFICATION # define BIO_SEDIMENT # define DIAGNOSTICS_BIO #endif and I would like to impose a surface flux of alkalinity Does anybody know how...
by isoares
Fri Oct 07, 2022 11:39 am
Forum: ROMS Discussion
Topic: How to correct HYCOM SSH before using it as OBCs in ROMS
Replies: 4
Views: 2139

Re: How to correct HYCOM SSH before using it as OBCs in ROMS

Dear Dan,

Yes, the boxes are the model domains, and yes, the smaller domain is nested on the the larger domain. The Data Assimilation is working only in the larger domain. If you have any questions please feel free to contact me directly in my email ivan@atlantech.com.br

Best,
by isoares
Fri Oct 07, 2022 11:32 am
Forum: ROMS Discussion
Topic: How to correct HYCOM SSH before using it as OBCs in ROMS
Replies: 4
Views: 2139

Re: How to correct HYCOM SSH before using it as OBCs in ROMS

Dear Patrick, thank you for replying.

I actually got an answer from Michael McDonald in the Hycom forum. He point me to the link https://www.hycom.org/dataserver/gofs-3pt1/reanalysis where I was able to download the long term mean SSH in NetCDF format.

Best Regard,

Ivan
by isoares
Fri Jul 29, 2022 9:17 pm
Forum: ROMS Discussion
Topic: I want to use HYCOM GLB v0.08 as the initial / boundary data of ROMS.
Replies: 17
Views: 25378

Re: I want to use HYCOM GLB v0.08 as the initial / boundary data of ROMS.

Dear Eiki, this is what I do: In the hycom.org website, on the left side menu, bellow Data Server, select GOFS3.1 then, select ACCESS DATA HERE then, GLBv0.08/expt_53.X (Jan-01-1994 to Dec-30-2015) then, (2005) Reanalysis Data: 2005 to 2005 (3-hrly) then, NetcdfSubset: //ncss.hycom.org/thredds/ncss/...
by isoares
Fri Jul 22, 2022 6:46 pm
Forum: ROMS Discussion
Topic: I want to use HYCOM GLB v0.08 as the initial / boundary data of ROMS.
Replies: 17
Views: 25378

Re: I want to use HYCOM GLB v0.08 as the initial / boundary data of ROMS.

Dear , the error code 400 in your message means the server didnt find what you are requesting. The 400 Bad Request Error is an HTTP response status code indicating that the server was unable to process the request sent by the client due to invalid syntax. I don't use python and matlab to download HY...
by isoares
Mon Jul 18, 2022 7:47 pm
Forum: ROMS Discussion
Topic: I want to use HYCOM GLB v0.08 as the initial / boundary data of ROMS.
Replies: 17
Views: 25378

Re: I want to use HYCOM GLB v0.08 as the initial / boundary data of ROMS.

Dear s19364,

there are two sets of HYCOM GLBv 0.08 expt 53.x, one has ice and the other doesn't . The set which has ice doesn't have SSH. Make sure you are using the correct one.
by isoares
Mon Jul 18, 2022 1:01 pm
Forum: ROMS Discussion
Topic: How to correct HYCOM SSH before using it as OBCs in ROMS
Replies: 4
Views: 2139

How to correct HYCOM SSH before using it as OBCs in ROMS

Dear forum and ROMS users, I am working on the implementation of Ensemble Optimal Interpolation (ENOI) in a regional domain of ROMS in the North Pacific Ocean (see figure) . I am using 6-hourly Hycom GLBy 0.08 T/S/U/V/SSH in the open boundaries of my ROMS regional grid. I am using the Chapman condit...
by isoares
Wed Sep 15, 2021 12:24 pm
Forum: ROMS Installation
Topic: ROMS compilation in multi processed environment
Replies: 2
Views: 3048

Re: ROMS compilation in multi processed environment

Dear Robertson,

Thank You for the reply. It is the number of Threads that determine the virtual components, right ?

well, thanks a lot.

Best

Ivan
by isoares
Tue Sep 14, 2021 5:40 pm
Forum: ROMS Installation
Topic: ROMS compilation in multi processed environment
Replies: 2
Views: 3048

ROMS compilation in multi processed environment

Dear all, I am running Linux Ubuntu 20.04.3 LTS in a multi-processed PC with 2 sockets, 2 Thread(s) per core and 22 cores per socket (see specs below). In theory I should be able to use 88 cores to run ROMS but it is not happening. I tried different configurations of tiles. I tried ntiles_i = 2 and ...
by isoares
Thu May 23, 2019 10:40 am
Forum: ROMS Discussion
Topic: Nudging time scales working on bry or clim
Replies: 7
Views: 4591

Re: Nudging time scales working on bry or clim

Hi Kate,

Yes, this is what I mean. I was using the wrong units. Thanks for warning me about the units. I will let you know about the new results.

Thanks

Ivan
by isoares
Wed May 22, 2019 6:04 pm
Forum: ROMS Discussion
Topic: Nudging time scales working on bry or clim
Replies: 7
Views: 4591

Re: Nudging time scales working on bry or clim

Very helpful discussion. Can I add one question ? Following your strategy of using a strong lateral nudging and weak nudging to climatology, if I decide to use a netcdf file to provide the nudging coefficients to the model, what would be the values in this file ? I am trying to use 1 day at the bord...
by isoares
Tue May 21, 2019 2:33 pm
Forum: ROMS Discussion
Topic: Lateral nudging and nudging to climatology
Replies: 2
Views: 1644

Re: Lateral nudging and nudging to climatology

Thanks Kate. I missed this previous discussion.

Cheers

Ivan :D
by isoares
Mon May 20, 2019 12:03 pm
Forum: ROMS Discussion
Topic: Lateral nudging and nudging to climatology
Replies: 2
Views: 1644

Lateral nudging and nudging to climatology

Dear all, I am a little confused about nudging. I am sure this subject has already been discussed in the forum but I just can’t find a post that addresses the parameters that control lateral nudging and the ones that control nudging to climatology. I am using ROMS version 839, which I have updated o...
by isoares
Wed Sep 26, 2018 11:43 am
Forum: ROMS Adjoint
Topic: d_ssh_obs.m
Replies: 0
Views: 2234

d_ssh_obs.m

Hi All, I wonder if someone has a matlab script to prepare the obs file to be used in IS4DVAR that is newer than the one used for WC13. The URL used in that script does not exist anymore. The aviso products were transfered to Copernicus. I would appreciate if someone could share his/hers matlab scri...
by isoares
Tue May 15, 2018 5:37 pm
Forum: ROMS Adjoint
Topic: Normalization coefficients
Replies: 4
Views: 7139

Re: Normalization coefficients

Thanks a lot.
Your comments have help me a lot.
I will let you know when I succeed running IS4DVAR

cheers

Ivan
by isoares
Mon May 14, 2018 2:59 pm
Forum: ROMS Adjoint
Topic: Normalization coefficients
Replies: 4
Views: 7139

Re: Normalization coefficients

Hi Ivica, Thanks a lot for the hints. I guess you are write, 20 cores is not good enough to run a grid this size 601x401x30. I am doing as you said, running the exact and the random methods for the 2D variables only to get some insight of my case. Thanks for the hint. One last question ... Do you kn...
by isoares
Fri May 11, 2018 12:46 pm
Forum: ROMS Adjoint
Topic: Normalization coefficients
Replies: 4
Views: 7139

Normalization coefficients

Deal All, I am new in the business of 4DVAR. I am trying to implement the IS4DVAR in the Northwest Pacific Ocean. My grid is 601x401x30. I am running the experiments in a Azure Virtual Machine which has 20 cores and is configured with Ubuntu linux. The WC3 test went well in this machine, with both t...
by isoares
Tue Sep 20, 2016 1:34 pm
Forum: ROMS Discussion
Topic: CLIMATOLOGY and NUDGING
Replies: 2
Views: 2597

Re: CLIMATOLOGY and NUDGING

Thanks Kate.
by isoares
Mon Sep 19, 2016 5:49 pm
Forum: ROMS Discussion
Topic: CLIMATOLOGY and NUDGING
Replies: 2
Views: 2597

CLIMATOLOGY and NUDGING

Dear ROMS users, Regarding the use of CLIMATOLOGY AND NUDGING, What is the difference between defining the correct flag in the ocean.h file or choosing F or T in the ocean.in file ? Do I have to do both ? I hope I am not asking something that have already been answered in the past, but looking into ...
by isoares
Mon Dec 09, 2013 2:34 pm
Forum: Job Opportunities
Topic: Job Opportunity for modelers
Replies: 0
Views: 3489

Job Opportunity for modelers

Positions are open at Instituto SINTEF do Brasil, a non-profit research and development institute, the Brazilian subsidiary of SINTEF-Scandinavia, the largest research and development organization, comprising more than 2000 employees from over 60 countries. SINTEF do Brasil supports Brazilian and in...
by isoares
Fri Nov 22, 2013 11:08 am
Forum: ROMS Usage
Topic: Question about FLAGS to introduce river sources
Replies: 2
Views: 3131

Re: Question about FLAGS to introduce river sources

Thank you very much Dr. Wilkin. I was mistakenly thinking that UV was a source of momentum, which was added in the momentum equations, while Q was a source of mass introduced in the continuity equation. The name UV_PSOURCE is confusing, it leads us to think that it is a SOURCE, but it is not since, ...
by isoares
Thu Nov 21, 2013 6:44 pm
Forum: ROMS Usage
Topic: Question about FLAGS to introduce river sources
Replies: 2
Views: 3131

Question about FLAGS to introduce river sources

Dear all, Does anybody knows what is the difference between the flags Q_PSOURCE and UV_PSOURCE that we use to make rivers in ROMS ? I am running a few experiments with the Amazon River. Because the Amazon discharge is so large, I had to introduce 1000 sources, so the amount in each source is small. ...