Search found 78 matches

by leon
Tue Aug 07, 2018 2:10 pm
Forum: ROMS Bugs
Topic: time record mismatch in the Hessian file for WC13/PSAS case
Replies: 0
Views: 815

time record mismatch in the Hessian file for WC13/PSAS case

Hi there, I ran into some problem when trying to estimate the posterior errors in data assimilation WC13/PSAS case. I'm using the latest version of ROMS while adding two cpp options "POSTERIOR_EOFS" and "POSTERIOR_ERROR_I" to estimate posterior error. An error occurred after the DA run when trying t...
by leon
Tue Jul 24, 2018 4:31 pm
Forum: ROMS Bugs
Topic: Model normalization coefficients bug in WC13 case (v918)
Replies: 0
Views: 784

Model normalization coefficients bug in WC13 case (v918)

Hello, I found the Normalization case of WC13 tutorial cannot compute the model coefficient even if you turn on the switch in c4dvar.in and set the NADJ to be different form the NTIMES. In short, older version of WC13 Normalization can give us model, initial, forcing and boundary normalization coeff...
by leon
Tue Jun 19, 2018 4:29 pm
Forum: ROMS Adjoint
Topic: weird iteration number in mod.nc file
Replies: 0
Views: 828

weird iteration number in mod.nc file

Hi all, I'm using 4DVAR to run a test case. The total iteration number seems odd to me in the output mod.nc file. My understanding is that the total iteration equals Ninner * Nouter. However, the output iteration in mod.nc is larger that Ninner*Nouter. In my case, Ninner = 7 ; Minner = 8 ; Nouter = ...
by leon
Mon Jul 27, 2015 6:47 pm
Forum: ROMS Adjoint
Topic: Extreme large values at the end of OPT_Perturbation
Replies: 0
Views: 1377

Extreme large values at the end of OPT_Perturbation

Hi all, I ran the optimal perturbation case for both double_gyre and WC13 case, which give small values at the end (~10^-5). But when I ran the optimal perturbation for my own model, I got extreme large values (~10^5) at the end. I'm not sure why it happens. The time scale for the optimal perturbati...
by leon
Wed Jul 22, 2015 7:32 pm
Forum: ROMS Bugs
Topic: TLM_DRIVER & NL_BULK_FLUXES cause error
Replies: 0
Views: 1513

TLM_DRIVER & NL_BULK_FLUXES cause error

Hi all,

When I define TLM_DRIVER and NL_BULK_FLUX together (e.g. for the double_gyre test case), I got such error:

NETCDF_OPEN - unable to open existing NetCDF file: ^@^@^@^@^@^@^
call from: inquire.F

If I don't define NL_BULK_FLUX, it would be fine. Any idea? Thanks a lot.
by leon
Thu Jul 16, 2015 7:51 pm
Forum: ROMS Bugs
Topic: Small bug in ad_v2dbc_im.F
Replies: 4
Views: 2181

Re: Small bug in ad_v2dbc_im.F

Hi Arango, Thanks a lot for the update. My post (Jul. 9) is before the update (Jul.10). That's the reason. Thanks. I don't know what are you talking about. I checked the code and it already have that correction! I think that you need to update . As you see below, ad_v2dbc_im.F already have the chang...
by leon
Thu Jul 09, 2015 9:10 pm
Forum: ROMS Bugs
Topic: Possible IO bug in close_io.F
Replies: 1
Views: 1591

Possible IO bug in close_io.F

In close_io.F line 69 45 DO i=1,nFfiles(ng) 46 IF ((FRC(i,ng)%Nfiles.gt.1).and.(FRC(i,ng)%ncid.ge.0)) THEN 47 FRCids(i,ng)=-1 48 DO j=1,NV 49 IF (ncFRCid(j,ng).eq.FRC(i,ng)%ncid) THEN 50 ncFRCid(j,ng)=-1 51 END IF 52 END DO 53 IF (model.eq.iADM) THEN 54 DO j=1,FRC(i,ng)%Nfiles 55 IF ((FRC(i,ng)%time...
by leon
Thu Jul 09, 2015 2:33 pm
Forum: ROMS Bugs
Topic: Bug in mod_boundary.F
Replies: 1
Views: 1893

Re: Bug in mod_boundary.F

Yes, you are right. I ran into the same problem too. It's in mod_boundary.F line1100. isouth should be inorth.
by leon
Thu Jul 09, 2015 2:14 pm
Forum: ROMS Bugs
Topic: Small bug in ad_v2dbc_im.F
Replies: 4
Views: 2181

Re: Small bug in ad_v2dbc_im.F

I found this problem too after extensive debugging. But the bug has not been fixed yet. Hope it can be fixed soon, so people like me won't speed too much time on debugging. Thanks a lot. I've found what appears to be a small bug in ad_v2dbc_im.F (svn revision 758). When using the ADM_DRIVER option a...
by leon
Wed Jul 01, 2015 4:23 pm
Forum: ROMS Adjoint
Topic: Tangent Initial Norm is NaN
Replies: 2
Views: 1732

Tangent Initial Norm is NaN

Hi all, When I do the optimal perturbation run, I got the error info at the first step of model run. PROPAGATOR - Grid: 01, Tangent Initial Norm: NaN STEP Day HH:MM:SS KINETIC_ENRG POTEN_ENRG TOTAL_ENRG NET_VOLUME 0 55136 00:00:00 5.704437E-23 NaN NaN 6.042164E+16 I'm not sure what causes this probl...
by leon
Thu Apr 02, 2015 9:22 pm
Forum: ROMS Problems
Topic: Fatal error in MPI_Allreduce: Invalid datatype
Replies: 0
Views: 1031

Fatal error in MPI_Allreduce: Invalid datatype

Hi all, I got an error while run the double_gyre/OP case. The error message is DEF_GST - creating checkpointing file, Grid : ^A^@^@^@ DEF_GST - creating checkpointing file, Grid : gyre3d_gst.nc Fatal error in MPI_Allreduce: Invalid datatype, error stack: MPI_Allreduce(861): MPI_Allreduce(sbuf=0x7fff...
by leon
Fri Mar 27, 2015 2:19 am
Forum: ROMS Adjoint
Topic: Is the Lanczos vector file necessary for adjoint to initials
Replies: 0
Views: 1747

Is the Lanczos vector file necessary for adjoint to initials

Hi all, In WC13 R4DVAR_sensitivity case, the Lanczos vector file is needed for the adjoint sensitivity analysis to the observation. However, if we only consider the adjoint sensitivity to the initial/forcing/obcs, is the Lanczos vector files still necessary? If the file is necessary, how can we get ...
by leon
Wed Mar 18, 2015 9:22 pm
Forum: ROMS Adjoint
Topic: A quick question about adjoint sensitivity analysis
Replies: 0
Views: 1673

A quick question about adjoint sensitivity analysis

Hi all,

I understand that for data assimilation, the objective is to minimize the error covariance related J function. For adjoint sensitivity analysis, are we minimizing the indicator function? During that process, all the observation-related inputs are not required, right? Thank you very much.
by leon
Mon Apr 07, 2014 2:16 am
Forum: ROMS Discussion
Topic: too strong surface current
Replies: 0
Views: 819

too strong surface current

Hi all,

There's a too strong surface coastal current for my simulation. Generally, my simulation is OK. What could cause a strong surface coast current? Wind? or anything else? Thank you for any suggestion.

leon
by leon
Wed May 29, 2013 9:05 pm
Forum: ROMS Bugs
Topic: Omit ‘&’ in trunk/ROMS/Utility/wrt_tides.F
Replies: 0
Views: 1050

Omit ‘&’ in trunk/ROMS/Utility/wrt_tides.F

Hi,

It seems that a '&' is omitted in the end of trunk/ROMS/Utility/wrt_tides.F(line 277).

277 20 FORMAT (6x,'WRT_TIDES - wrote time-accumulated tide harmonics, ',
278 & 'Grid ',i2.2)

Best,

X
by leon
Wed May 01, 2013 6:19 pm
Forum: ROMS Sediment
Topic: Help~Got too high T and too low S in the bottom layer
Replies: 5
Views: 3256

Re: Help~Got too high T and too low S in the bottom layer

Thank you for the advice. The weird thing is that when I just run the circulatio part without sediment submodel, everything is fine. And the false TS only occur at the bottom layer when running the sediment model. Anyway, thank you for your suggestion.
by leon
Wed May 01, 2013 3:56 pm
Forum: ROMS Sediment
Topic: Help~Got too high T and too low S in the bottom layer
Replies: 5
Views: 3256

Re: Help~Got too high T and too low S in the bottom layer

Hi John,

Thank you for the reply. I just tried to not use sed_dens, but I got the same problem. The TS are totally wrong. Do you have any suggestion? Thanks
by leon
Tue Apr 30, 2013 1:41 pm
Forum: ROMS Sediment
Topic: Help~Got too high T and too low S in the bottom layer
Replies: 5
Views: 3256

Help~Got too high T and too low S in the bottom layer

Hi all, I'm using ROMS-SWAN-Sediment coupled model to simulate river sediment transport on continental shelf. However, at the river mouth, the T goes too high, about 300, and the salinity goes to low, about -300, after 7 months running. The river sediment concentration is really high, about 50 kg/m^...
by leon
Mon Dec 31, 2012 2:47 pm
Forum: ROMS Discussion
Topic: How to get the directional spreading values in TPAR files?
Replies: 0
Views: 532

How to get the directional spreading values in TPAR files?

Dear all,

I'm using WWIII to interpolate the OBC for my ROMS-SWAN model. However, I can't
find any information about the fifth values in the TPAR files (the
directional spreading values). Does anybody have such experiences? Thank
you very much.

Best,
leon
by leon
Tue Jul 13, 2010 3:24 pm
Forum: ROMS Bugs
Topic: possble a little bug in varinfo.dat
Replies: 3
Views: 1818

possble a little bug in varinfo.dat

In file "varinfo.dat", 'river_dye_' ! Input 'river runoff dye concentration' 'kilogram meter-3' ! [kg/m3] 'river_dye, scalar, series' 'ocean_time' 'idRtrc(inert(i))' 'nulvar' 1.0d0 I think the "ocean_time" should be "river_time" . Am I right?
by leon
Sat Jun 05, 2010 4:27 am
Forum: ROMS Sediment
Topic: Is there any difference for different bed layer number?
Replies: 3
Views: 2773

Is there any difference for different bed layer number?

Dear all, Recently, I'm doubtful about the number of sediemnt bed layers. You can set three bed layers or five bed layers or some else. Is there any difference? I read the paper Warner et al. wrote in 2008. What I got is that 3 bed layers maybe ok. So what's the effect of setting more bed layers? Ar...
by leon
Fri May 28, 2010 1:20 am
Forum: ROMS Discussion
Topic: Are there any conventions for nudging time scales setting?
Replies: 3
Views: 2477

Re: Are there any conventions for nudging time scales setting?

Hi,Kate. Thank you very much for your reply.

How did you determine the nudging coefficients? By expericences?

And do you use the coefficents for all the simulation time scales? For exmaple, the real time scale and the climatological time scale.

Thanks~
by leon
Thu May 27, 2010 3:27 am
Forum: ROMS Discussion
Topic: Are there any conventions for nudging time scales setting?
Replies: 3
Views: 2477

Are there any conventions for nudging time scales setting?

Dear all, Sometimes, I'm not sure about the nudging time scales in the *.in file of ROMS. Actually, different settling about them will get different resluts. The current around the boundary may not flow out or fully radiated when the nudging time scales are set appropriately. For exmample, when a cl...
by leon
Sat May 15, 2010 6:26 am
Forum: ROMS Information
Topic: Deviatory Stress Tensor
Replies: 1
Views: 2508

Re: Deviatory Stress Tensor

Hi, I'm confused about the formulas you give in your document.

What dose the 'Fu' painted in the attachfile represent in the formula?

Actually, I'm confused about the horizontal mxing treatment of ROMS. Could you please recommend some papers abouth that?

Thank you very much~
by leon
Sat Feb 06, 2010 4:17 pm
Forum: ROMS Bugs
Topic: problems when update from r442 to r444
Replies: 0
Views: 1153

problems when update from r442 to r444

Dear all, The model is running well before updated to r444. But when updated to r444, the model exits after the first step. I run the model in our cluster, the message is' signall 15 recieved'. I did not change anything, but just update to r444. The previous well-running model just exits without oth...
by leon
Mon Jan 18, 2010 12:44 pm
Forum: ROMS Discussion
Topic: How is the cohesive sediment treated in the latest ROMS?
Replies: 1
Views: 758

How is the cohesive sediment treated in the latest ROMS?

Dear all, How is the cohesive sediment treated in the latest ROMS? Is the cohesive sediment and non-cohensive sediment treated the same way? I have read Warner's several articles. The cohesive and non-cohensive sediment is treated the same. Actually, the cohesive and non-cohesive sediment is really ...
by leon
Mon Jan 11, 2010 6:10 am
Forum: ROMS Bugs
Topic: sediment bug in the latest verison 429
Replies: 7
Views: 3482

Re: sediment bug in the latest verison 429

First, thank you very much~ I update the code and there are still some errors. In the previous verison, there is no Ltracer option for mud or sand in the sediment.in file. The model is running ok. After updating to the latest version, the model runs well when the Ltracer option is F in sediment.in f...
by leon
Sun Jan 10, 2010 1:08 pm
Forum: ROMS Bugs
Topic: sediment bug in the latest verison 429
Replies: 7
Views: 3482

Re: sediment bug in the latest verison 429

Sorry for that. Actually, the error is about the river sediment. The files are all the same, But it is right in the ROMS version 399 and wrong in the verison 429 or the lastest one. The north south east and west boundary sediment condition all exist in the bry file. Log files are below: Time is date...
by leon
Wed Jan 06, 2010 12:38 pm
Forum: ROMS Sediment
Topic: How to set the value of surface erosion rate in sediment.in?
Replies: 1
Views: 2206

How to set the value of surface erosion rate in sediment.in?

Dear all, I am using the sediment model now. However, I'm confused about the value of surface erosion rate in the sediment.in file. Actually, a lot of factors influence the surface erosion rate, such as sediment diameter, current speed and so on. Other values can be caculated using the Sediment Part...
by leon
Mon Dec 21, 2009 2:40 pm
Forum: ROMS Sediment
Topic: Sediments produce even the bed layer thikness is zero
Replies: 1
Views: 1665

Sediments produce even the bed layer thikness is zero

Dear fellows, In the sediment model,there has to be at least one bed layer so that the sediment can settle onto the sea floor. One interesting thing is that it will still produce sediments even you have set the thickness of the only one bed layer to be 0, whether you set the bed porosity to be 0.5, ...
by leon
Mon Dec 21, 2009 10:59 am
Forum: ROMS Bugs
Topic: sediment bug in the latest verison 429
Replies: 7
Views: 3482

Re: sediment bug in the latest verison 429

I'm afraid there are still some problems with the variables, maybe with the bry file varibles. Pls check out~
by leon
Mon Dec 21, 2009 5:41 am
Forum: ROMS Bugs
Topic: sediment bug in the latest verison 429
Replies: 7
Views: 3482

sediment bug in the latest verison 429

The error is in checkvar.F, when set the sediment on. The mud_01 and snad_01 are considered as mud_ and sand_



error information:

NLM:checkvar unable to find model variable : mud_
by leon
Sat Dec 19, 2009 6:16 am
Forum: ROMS Sediment
Topic: Why can't the number of bed layers be set to be zero?
Replies: 2
Views: 1796

Re: Why can't the number of bed layers be set to be zero?

There has to be at least one bed layer so that the sediment can settle onto the sea floor. So set Nbed = 1, and init the thickness =0. That is fine. I suggest you set porosity = 0.5, not 0. In the future the porosity will be computed by the model. If you start the model with zero concentration in w...
by leon
Fri Dec 18, 2009 8:16 am
Forum: ROMS Problems
Topic: why is the kinetic energy so small?
Replies: 1
Views: 813

why is the kinetic energy so small?

Dear all,
I find the kinetic energy in the model log file is very small. For exmaple, there is only 0.02 in the model domain 24N-41N, 117E-131E. Of course I did not find the unit. SO what's the unit?

Thank you ~
by leon
Fri Aug 28, 2009 1:15 pm
Forum: ROMS Problems
Topic: help~really confused about the so called add tidal forcing~
Replies: 7
Views: 2674

Re: help~really confused about the so called add tidal forcing~

Thank you very much~ I made the tidal forcing file before, I'm just not sure the way I define the tidal options in *.h file. Because when I add tidal forcing, the current just go disorderly, I mean not so good as the no tidal case. Maybe there are some problem with the tidal harmonics, I'll check it...
by leon
Fri Aug 28, 2009 2:30 am
Forum: ROMS Problems
Topic: help~really confused about the so called add tidal forcing~
Replies: 7
Views: 2674

Re: help~really confused about the so called add tidal forcing~

Dear all, I'm still confused about the tidal forcing. Actually, my model domain is East China Sea. At first, I get the OBC data--zeta,u,v, from OCCAM ( a global ocean model). And there is no tidal forcing. The model rusult is fine. But when I add tidal force, the currents just become disorderly. I'm...
by leon
Wed Aug 26, 2009 6:08 am
Forum: ROMS Problems
Topic: help~really confused about the so called add tidal forcing~
Replies: 7
Views: 2674

Re: help~really confused about the so called add tidal forcing~

Thank you very much. You really do me a favor. In my case, I use add_fsobc and add_m2obc. One more question, If I add tide using SSH_TIDE UV_TIDE ADD_FSOBC ADD_M2OBC, the model will generate tidal information such as amplitude, right? But how to output the tidal information? I didn't find settings a...
by leon
Tue Aug 25, 2009 3:26 pm
Forum: ROMS Problems
Topic: help~really confused about the so called add tidal forcing~
Replies: 7
Views: 2674

help~really confused about the so called add tidal forcing~

Dear all, After learning ROMS for several months, I'm really confused about the so called 'add tidal forcing. Q1: I have run a model with OBCs, which the OBC data are getted from some global ocean model such as HYCOM. There's no tidal forcing here. The result is good. If I want to simulate sediment ...
by leon
Mon Aug 24, 2009 1:22 pm
Forum: ROMS Sediment
Topic: Why can't the number of bed layers be set to be zero?
Replies: 2
Views: 1796

Why can't the number of bed layers be set to be zero?

Dear all. Why can't the number of bed layers be set to be zero? Actually, when the number of layers (Nbed) is set to be zero, there is an error says that the Nbed can not be zero. I want to know why. I want to see how the river sediments transport over continental shelves. If I set the Nbed to be no...
by leon
Tue Aug 18, 2009 2:13 pm
Forum: ROMS Sediment
Topic: how to add sediment to the river?
Replies: 5
Views: 3718

Re: how to add sediment to the river?

Cool~ You are totally right. I have tried to define the river sediment as river transport, then I got such errors: NETCDF_GET_FVAR_1D - error while reading variable: river_sand_01 in input file: /dcfs2/users/leon/Documents/roms_examples/sediment/sediment-forc.nc call from: get_cycle.F GET_NGFLD - er...
by leon
Tue Aug 18, 2009 2:46 am
Forum: ROMS Sediment
Topic: how to add sediment to the river?
Replies: 5
Views: 3718

Re: how to add sediment to the river?

Fist, thank you very much. I still have a question. Is the river sediment defined as the river runoff river_transport or the river_salt? For example, if as the river_salt, it should be N layers, but not for the river_transport. Which one is right? Thank you~
by leon
Sun Aug 16, 2009 12:31 pm
Forum: ROMS Sediment
Topic: how to add sediment to the river?
Replies: 5
Views: 3718

Re: how to add sediment to the river?

I understand, I should add 'river_sediment' to the cpp*.h. But I'm not sure that if I must give the wave condition after I define the bottom boundary layer closure.
Any body?
Any suggestion?
Thank you~
by leon
Fri Aug 14, 2009 9:06 am
Forum: ROMS Sediment
Topic: how to add sediment to the river?
Replies: 5
Views: 3718

how to add sediment to the river?

Dear all, I want to add sediment to a river mouth. But I am not sure about the cpp defines. Is it ok if I set 'UV_PSOURCE TS_PSOURCE Q_PSOURCE'? I find there are 'river_mud_. river_sand_' in the file varinfo.dat. So is it ok? Or what should I set in the cpp defines if I want to add sediment to the r...
by leon
Fri Aug 14, 2009 1:23 am
Forum: ROMS Sediment
Topic: Open boundary problem for sediment
Replies: 2
Views: 2319

Re: Open boundary problem for sediment

Hi, I get the same problem, I try to add variables to 'varinfo.dat', but have not successed. But I am a little confused about what I do, because what arango said in https://www.myroms.org/forum/viewtopic.php?f=30&t=1450 . Any way, I have to try. Can anybody give me some useful suggestion about this?...
by leon
Wed Aug 05, 2009 3:11 am
Forum: ROMS Problems
Topic: blowing up when plus tide
Replies: 1
Views: 878

blowing up when plus tide

Dear all, I got a problem. When I didn't plus tide, my model can run for a long time. But when I plus tide, it just blows up after a few time steps. Why? I add my *.h file with 'UV_TIDES, SSH_TIDES, ADD_FSOBC, ADD_M2OBC'. Am I right? What's the most possible problem? Any suggestion is ok. Thank you ...
by leon
Fri Jul 17, 2009 7:08 am
Forum: ROMS Sediment
Topic: ROMS-SWAN Coupled System Users
Replies: 21
Views: 12175

Re: ROMS-SWAN Coupled System Users

Hi, John, I will use the ROMS-SWAM Coupled System to do some research on the sediment transport.
by leon
Sun Jun 28, 2009 1:49 am
Forum: ROMS Problems
Topic: odd problem with hc
Replies: 4
Views: 5079

odd problem with hc

Hello all, I got an odd problem with hc. Actually, the probelm is NETCDF_CHECK_VAR-inconsistent value of variable:hc 3.000000E+00 2.999994E+00 in/users/leon/nest-init.nc. But I check the init file and grid file, the value of hc are all equal 3. What's the problem? By the way, I just update my ROMS v...
by leon
Thu Jun 25, 2009 2:05 pm
Forum: ROMS Problems
Topic: what's wrong with the seagrid spacer?
Replies: 12
Views: 2589

Re: what's wrong with the seagrid spacer?

Yes,it's the land mask computing which cousts a long time. But the seagrid I use is from the RNT toolbox( http://eros.eas.gatech.edu/RNT/ ). Maybe there are some different. I usually load the coastline first, then setup the grids and computing land mask. Finally, adding bathyment and editing land ma...
by leon
Thu Jun 25, 2009 3:13 am
Forum: ROMS Problems
Topic: what's wrong with the seagrid spacer?
Replies: 12
Views: 2589

Re: what's wrong with the seagrid spacer?

Actually, when I use the seagrid in RNT toolbox to compute the land mask, it always costs such a long time. Why does it cost such a long time? I know it depends on the number of grids and the computing domain. Are there other reasons? Which process costs the longest time? Can we improve it ?
by leon
Wed Jun 24, 2009 3:25 am
Forum: ROMS Problems
Topic: what's wrong with the seagrid spacer?
Replies: 12
Views: 2589

Re: what's wrong with the seagrid spacer?

Thank you very much, rich. I know what's the problem. The seagrid that I use is from the RNT toolbox. Maybe it's different or old, so the spacer is not working. I download the one you told me. And the spacer works well. The RNT users should remeber that the RNT seagrid is to some extent different fr...
by leon
Mon Jun 22, 2009 3:02 am
Forum: ROMS Problems
Topic: what's wrong with the seagrid spacer?
Replies: 12
Views: 2589

what's wrong with the seagrid spacer?

It is said that seagrid can change the space of the grid by change the position of the spacer. I did as the seagrid tutorial, but the spacing is not changing. What's wrong with the seagrid spcaer? Can someone tell me why it doesn't work for me? Thank you very much~

leon
by leon
Fri Jun 19, 2009 3:18 am
Forum: ROMS Usage
Topic: RNT toolbox
Replies: 6
Views: 3934

Re: RNT toolbox

You'd better use the RNT in the Linux OS. And if you use RNT in the 32bit systerm, you need to recompile the mex files as the complie.txt said in the RNT website. By the way, RNT is really a good tool for ROMS beginners. Good luck.
leon
by leon
Wed Jun 03, 2009 2:00 am
Forum: ROMS Problems
Topic: How to do nesting using ROMS?
Replies: 7
Views: 2671

Re: How to do nesting using ROMS?

Thanks all of you very much. Actually, RNT toolbox is also a useful tools for ROMS. You can get it from http://www.o3d.org/RNT/ . And there are also some tutorials on http://www.o3d.org/ROMS-Tutorial/ . Thanks a lot for Mr. E. Di Lorenzo. He really does a good job~
by leon
Sat May 30, 2009 12:49 pm
Forum: ROMS Problems
Topic: How to do nesting using ROMS?
Replies: 7
Views: 2671

How to do nesting using ROMS?

Dear all,
Can ROMS do nesting right now? And how?
Are there any tutorials or tools or examples for ROMS nesting?

Any information is OK. Thank you very much~
by leon
Wed May 27, 2009 1:41 pm
Forum: ROMS Discussion
Topic: open boundary conditions
Replies: 2
Views: 2157

Re: open boundary conditions

I learn a lot from :http://sauron.urban.eng.osaka-cu.ac.jp/%7Emori/research/ROMS/roms_obc.pdf. But I am still confused about the wikiROMS said in https://www.myroms.org/wiki/index.php?title=Frequently_Asked_Questions What are the ways that ROMS can receive tides on the boundaries? 1. You can specify...
by leon
Wed May 27, 2009 1:17 am
Forum: ROMS Tools and Techniques
Topic: rnc_CreateForcFile.m
Replies: 3
Views: 2774

Re: rnc_CreateForcFile.m

hi, I think it's the problem of netcdf.
Maybe you should choose the appropriate mexnc netcdf snctool for your version of matlab.
You can check follow link for more details.
https://www.myroms.org/wiki/index.php/MEXNC

Good luck!
by leon
Fri May 22, 2009 4:31 am
Forum: ROMS Discussion
Topic: open boundary conditions
Replies: 2
Views: 2157

open boundary conditions

Dear all, I'm really confused about the different OBCs. There are several options in the cppdef.h,for example: ** Eastern edge open boundary condtions OPTIONS: ** ** ** ** EAST_FSCHAPMAN use if free-surface Chapman condition ** ** EAST_FSGRADIENT use if free-surface gradient condition ** ** EAST_FSR...
by leon
Fri May 15, 2009 4:51 am
Forum: ROMS Tools and Techniques
Topic: How to use the RNT toolbox
Replies: 0
Views: 853

How to use the RNT toolbox

Dear all, I am a little confused about the RNT toolbox(http://www.o3d.org/RNT/). There are some readmes in the toolbox, But still not enough. Now I am confused about the matlib/misc directory. I don't know what the files in the /misc diretory are used for. There are no any explanations. If you konw ...
by leon
Sat May 09, 2009 2:43 am
Forum: ROMS Information
Topic: Lateral Boundary Conditions?
Replies: 3
Views: 3323

Re: Lateral Boundary Conditions?

Hi~ There is some information about the bounday conditons.Hope this is useful. http://www.oceanwave.jp/tmp/roms_obc.tgz https://www.myroms.org/forum/viewtopic.php?f=17&t=930&p=3232&hilit=nobuhito#p3232 I have the similar problem. I am cofused with the different boundary condtions, especially the ope...
by leon
Fri May 08, 2009 2:01 am
Forum: ROMS Problems
Topic: Can someone tell me some details about open boundary options
Replies: 2
Views: 1300

Re: Can someone tell me some details about open boundary options

First, thank you very much. I have the roms_obc.pdf already. It just said some codes of the obc. But I still don't know the details mean of the obc options. I mean the physical means. Anyone can tell me that? Thanks~
by leon
Tue May 05, 2009 3:17 am
Forum: ROMS Problems
Topic: Can someone tell me some details about open boundary options
Replies: 2
Views: 1300

Can someone tell me some details about open boundary options

Dear all, In the cppdef.h of ROMS, we can see some open boundary condtion options. For example: ** Eastern edge open boundary condtions OPTIONS: ** ** ** ** EAST_FSCHAPMAN use if free-surface Chapman condition ** ** EAST_FSGRADIENT use if free-surface gradient condition ** ** EAST_FSRADIATION use if...
by leon
Tue Apr 21, 2009 2:20 pm
Forum: ROMS Problems
Topic: problem about MPI process terminated unexpectedly
Replies: 2
Views: 1227

Re: problem when run the DAMEE application

thx for reply first, Acturally,the output files are all less than 200M. But I still got the problem: MPI process terminated unexpectedly Exit code -5 signaled from node48 Killing remote processes...DONE real 9862.22 user 0.02 sys 0.01 + exit 0 I am not familiar with the MPI. Wish someone can tell me...
by leon
Mon Apr 20, 2009 4:24 am
Forum: ROMS Usage
Topic: how does roms caculate the value of zeta?
Replies: 5
Views: 2117

Re: how does roms caculate the value of zeta?

I change the dt value, but it still bolws up. This is my first application, I hope someone can help me. Thank you in advance. Information: Physical Parameters, Grid: 01 ============================= 86400 ntimes Number of timesteps for 3-D equations. 36.000 dt Timestep size (s) for 3-D equations. 50...
by leon
Mon Apr 20, 2009 3:56 am
Forum: ROMS Discussion
Topic: timestep musings
Replies: 8
Views: 2701

Re: timestep musings

I want to known that whether the CFL condition for ROMS is dt<sqrt(((min(min(dx))^2)+(min(min(dy))^2)) / (9.8 * (min(min(h))^2))) or not.
leon
by leon
Mon Apr 20, 2009 3:03 am
Forum: ROMS Usage
Topic: how does roms caculate the value of zeta?
Replies: 5
Views: 2117

Re: how does roms caculate the value of zeta?

Thanks all of you. I really appreciate it.And I want to known that whether the CFL condition for ROMS is dt<sqrt(((min(min(dx))^2)+(min(min(dy))^2)) / (9.8 * (min(min(h))^2))) or not.
leon
by leon
Sun Apr 19, 2009 12:48 pm
Forum: ROMS Usage
Topic: how does roms caculate the value of zeta?
Replies: 5
Views: 2117

how does roms caculate the value of zeta?

I just use ROMS for my own application, But it blows up when just runs several steps. When I check the history file and restart file, I find the value of zeta as fllows(only a part of zeta values): zeta = _, _, _, _, _, _, _, _, 0, 0.256860918381414, 0.254291715215559, 0.248481492553035, 0.241916377...
by leon
Sat Apr 11, 2009 3:34 pm
Forum: User Applications
Topic: why I got "Illegal model configuration" with my application
Replies: 1
Views: 4473

why I got "Illegal model configuration" with my application

Dear all, I'm new to ROMS. When I run my own application, I got model configuration error. I am not familiar with the ROMS model configration. Can someone tell me what's wrong with my model configuration? Thank you very much. My model configuration is as follows: Time is date cat ${PSB_NODEFILE} Thi...
by leon
Sat Apr 11, 2009 1:15 am
Forum: ROMS Problems
Topic: problem about MPI process terminated unexpectedly
Replies: 2
Views: 1227

problem about MPI process terminated unexpectedly

I run the DAMEE application download from http://www.myroms.org/index.php?page=Datasets. What I do is just as the readme file tells me. But the program just exit when run at step 16320. The log file got such error: MPI process terminated unexpectedly Exit code -5 signaled from node46 Killing remote ...
by leon
Thu Mar 12, 2009 2:42 pm
Forum: ROMS Problems
Topic: Problem about bathy extract.m of romsmatlab tools
Replies: 0
Views: 736

Problem about bathy extract.m of romsmatlab tools

I did as arango said here(https://www.myroms.org/forum/viewtopic.php?f=3&t=45&p=70&hilit=bath&sid=4942beaa5724be5be7366aed7f299d07#p70).Then I use the seagrid to caculate the depth and mask of the gird area. But I think the result of depth is actually wrong. My area is 24N-41N 117E-131E. The related...
by leon
Wed Mar 11, 2009 2:05 am
Forum: ROMS Tools and Techniques
Topic: Problem about RNT MAIN_grid.m
Replies: 2
Views: 1062

Re: Problem about RNT MAIN_grid.m

yes,you are right.
I think
region =[min(grd.latr(:))-1,max(grd.latr(:))+1,min(grd.lonr(:))-1,max(grd.lonr(:))+1]
is ok.
Thank you very much
by leon
Tue Mar 10, 2009 3:01 pm
Forum: ROMS Tools and Techniques
Topic: Problem about RNT MAIN_grid.m
Replies: 2
Views: 1062

Problem about RNT MAIN_grid.m

Dear all, When I use the RNT toolbox(http://www.o3d.org/rnt/) to get my topography as the MAIN_grid.m said, I got problem when I run code of MAIN_grid below: %========================================================== % topography %========================================================== %EDIT: Ch...
by leon
Wed Mar 04, 2009 8:29 am
Forum: ROMS Tools and Techniques
Topic: Seagrid error
Replies: 11
Views: 7426

Re: Seagrid error

There are two mat2str functions, one is in the mexcdf5 directory of ROMS matlab tool, and the other one is in matlab/toolbox/matlab/strfun/ directory. The two mat2str functions are different. The first one is : function s = mat2str(x) % MAT2STR String equivalent to a matrix. % MAT2STR(X) converts ma...
by leon
Sat Feb 28, 2009 5:24 am
Forum: ROMS Problems
Topic: problem when run the ESTUARY_TEST case
Replies: 6
Views: 2135

Re: problem when run the ESTUARY_TEST case

Lm == 200 ! Number of I-direction INTERIOR RHO-points
Mm == 3 ! Number of J-direction INTERIOR RHO-points
N == 20 ! Number of vertical levels


I think the value of Mm is wrong in the ocean_estuary.in
by leon
Fri Feb 27, 2009 4:00 am
Forum: ROMS Problems
Topic: problem when run the ESTUARY_TEST case
Replies: 6
Views: 2135

Re: problem when run the ESTUARY_TEST case

That's the piont! It's ok now. You are really cool! Great! Thank you very much!
by leon
Thu Feb 26, 2009 5:39 am
Forum: ROMS Discussion
Topic: Is there any discussion group of ROMS like QQ or MSN group?
Replies: 0
Views: 764

Is there any discussion group of ROMS like QQ or MSN group?

Dear users,
I am new for ROMS, and when I learn ROMS, I get a lot of problems. I want to know if there are some groups like QQ or MSN for the users to discuss problems when they use the ROMS.
I really want to jiont if possible.
Or any one can create it?
Thanks!
by leon
Wed Feb 25, 2009 8:43 am
Forum: ROMS Problems
Topic: problem when run the ESTUARY_TEST case
Replies: 6
Views: 2135

problem when run the ESTUARY_TEST case

Dear all, I am a new user of ROMS. I run the upwelling test, it's ok. But when I run the ESTUARY_TEST , after 'make',I get such problem: cd Build; /usr/bin/gfortran -c -frepack-arrays -O3 -ffast-math -ffree-form -ffree-line-length-none analytical.f90 analytical.f90:256.32: BOUNDARY(ng)%zeta_west(j)=...
by leon
Thu Feb 19, 2009 4:29 am
Forum: ROMS Tools and Techniques
Topic: problem about the plotting package installation
Replies: 24
Views: 9061

Re: problem about the plotting package installation

thx,kate.I download the package again, then there is no problem. I think it must be something wrong in my previous packge. Anyway, thank you very much.
by leon
Wed Feb 18, 2009 1:30 am
Forum: ROMS Tools and Techniques
Topic: problem about the plotting package installation
Replies: 24
Views: 9061

problem about the plotting package installation

Dear users, I saw from wikiroms that we can use the plotting package for visualizing ROMS model output. But when I install the package as the wikiroms, I get such problems: leon@leon-desktop:/media/disk/linux/romstools/plot/src$ make /usr/bin/cpp -P -traditional -DLINUX -I/opt/g95soft/s_netcdf4/incl...