Hi Neel
that comes as a great relief - thanks for letting us know. Thanks again to Cate.
John
Search found 112 matches
- Thu Feb 18, 2021 8:14 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
- Fri Feb 12, 2021 11:27 pm
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Cate is right (thank you, Cate!). The line at or near 486 in TPXO2ROMS_v5pt2.m, which currently reads harmonicNames=upper(nc_varget(TPXOfile.elev,'con')); must be changed to two lines: harmonicNames=upper(ncread(TPXOfile.elev,'con')); harmonicNames=permute(harmonicNames,[2,1]); I will put a new v5pt...
- Thu Feb 11, 2021 10:27 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Hi Neel, Change that section of code to: for nR=1:Nharmonics disp(['nR = ', num2str(nR)]) nT=0; for k=1:NTPXO s1=deblank(TPXO.harmonicNames(k,1:4)); s2=ROMSnames{nR}; disp([s1,' ',s2]) cmp=strcmp(s1,s2); if cmp nT=k; disp(['k = ',num2str(k)]) end end ROMSharmonics(nR,:)=TPXOharmonicData(nT,:); %ROMS...
- Wed Feb 10, 2021 10:32 pm
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Neel, I have been told there was no format change between v1 and v4, so there must be a problem in your inputs. Can you please post the ten or so input lines from your TPXO2ROMS_v5pt2_script.m, and also post the lines that are displayed when you change that section of code to: if cmp nT=k; disp([deb...
- Mon Feb 08, 2021 4:57 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Hi Neel, sorry for the delay. I was interstate. As an experiment to see if I could live without my laptop for two days, I did not bring it along. Yes, I survived. I downloaded and ran your TPXO2ROMS script file and TRXO2ROMS.m, and they worked fine. The only changes I made were to the file paths in ...
- Thu Feb 04, 2021 8:31 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Hi Neel,
can you repeat the exercise, but with TPXO2ROMS_v5pt2_script.m (instead of TPXO2ROMS_v5pt1_script.m), and let me know what happens?
If it works, I recommend deleting v5pt1, to remove future confusion.
Cheers
John
can you repeat the exercise, but with TPXO2ROMS_v5pt2_script.m (instead of TPXO2ROMS_v5pt1_script.m), and let me know what happens?
If it works, I recommend deleting v5pt1, to remove future confusion.
Cheers
John
- Tue Jan 19, 2021 12:19 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Hi Neel it is pretty obvious that you have chosen some parameter or set of parameters in GridBuilder which is causing the problem in TPXO2ROMS. The GridBuilder guru, Charles James, is on leave at the moment so probably won't be able to help you with that for a week or two. There is something strange...
- Sat Jan 16, 2021 12:19 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Hi Neel
please replace your TPXO2ROMS_v5pt1.m with attached (TPXO2ROMS_v5pt2.m) and let me know if it works.
John
please replace your TPXO2ROMS_v5pt1.m with attached (TPXO2ROMS_v5pt2.m) and let me know if it works.
John
- Fri Jan 15, 2021 11:02 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Hi Neel,
tomorrow morning I will have another look. Meanwhile, could you download TPXO2ROMS_v5pt1.m again to ensure we are using the identical software, and try to run it with the Vizhinjam grid? Let me know what the error is, if you get one.
Cheers
John
tomorrow morning I will have another look. Meanwhile, could you download TPXO2ROMS_v5pt1.m again to ensure we are using the identical software, and try to run it with the Vizhinjam grid? Let me know what the error is, if you get one.
Cheers
John
- Thu Jan 14, 2021 11:42 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Hi Neel, I hope Cate's solution worked for you. I downloaded your grid, and it also caused an error for me. I don't have time tonight to work out what's the problem with the grid. Maybe it will help you to get the software running with a grid that doesn't create an error, so I will attach a working ...
- Wed Jan 13, 2021 8:46 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Hi Neel, I just saw this post, and unfortunately may not have time to spend on it for another 24 hours. Will do my best. For now, can only say your script looks fine (one single harmonic should be fine), but the error message is odd - it implies it can find grid_tpxo9.nc, but can't open it! But tear...
- Thu Dec 17, 2020 12:01 am
- Forum: ROMS Discussion
- Topic: evaluating tidal constituents, amplitude and phases from water level data
- Replies: 5
- Views: 658
Re: evaluating tidal constituents, amplitude and phases from water level data
Hi Sonaljit, I have downloaded the file. Looks like tide gauge data. Before I can analyze it, I need to know the time zone the data is in. Also, particularly if it is in the local time zone, let me know whether you want the phases of the harmonics referenced to that time zone, or UT. I would assume ...
- Sat Dec 12, 2020 8:13 am
- Forum: ROMS Discussion
- Topic: evaluating tidal constituents, amplitude and phases from water level data
- Replies: 5
- Views: 658
Re: evaluating tidal constituents, amplitude and phases from water level data
sonaljit.m, first, I have to say you should change your name to sonaljit.py. Second, if your data is in a ROMS hisfile format, if you like, you can put your data on onedrive or somewhere I can access it, I'll analyse it for you and send you the harmonics. Won't take me more than a few minutes. Then,...
- Sat Oct 31, 2020 10:37 am
- Forum: ROMS Adjoint
- Topic: tidal constituents
- Replies: 1
- Views: 430
Re: tidal constituents
Hi Pooran, what I did about ten years ago was set up a ROMS tidal model of the Gulf. The outer boundary was outside the Straits of Oman in the Arabian Sea. It had an approximately 1100 metre grid. I used the TPXO tides at the outer boundary to drive it. I let it run for a year. Then I analyzed the w...
- Tue Jun 16, 2020 5:53 am
- Forum: ROMS Usage
- Topic: BLOWING UP during nesting
- Replies: 11
- Views: 2436
Re: BLOWING UP during nesting
Just wondered if this was what John Wilkin meant to paste in about negative depths.
GET_GRID - bathymetry at RHO-points: h
(Grid = 02, File: /users/hwang121/scratch/smallinput/ngbay_grd_fine1.nc)
(Min = -1.65801391E+00 Max = 5.26751124E+01)
GET_GRID - bathymetry at RHO-points: h
(Grid = 02, File: /users/hwang121/scratch/smallinput/ngbay_grd_fine1.nc)
(Min = -1.65801391E+00 Max = 5.26751124E+01)
- Wed Jan 15, 2020 11:44 pm
- Forum: ROMS Bugs
- Topic: WET_DRY and Gridbuilder Problem
- Replies: 21
- Views: 3173
Re: WET_DRY and Gridbuilder Problem
The author of Gridbuilder is on leave this week. Maybe he will have a suggestion, though it does not appear to be a Gridbuilder problem as such.
- Fri Oct 11, 2019 10:45 pm
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
I have updated the TPXO2ROMS Matlab software for creating a ROMS tidal input file from the TPXO tide database. It is now called TPXO2ROMS_v5pt1. Version 5.1 downloads the latest global tidal inversion (TPXO9) from Oregon State University. You will need permission from the authors (Lana Erofeeva and ...
- Thu Jun 13, 2019 5:15 am
- Forum: ROMS Discussion
- Topic: Time type in nc file
- Replies: 5
- Views: 1039
Re: Time type in nc file
ara952, of course Hernan and Kate are right about the time, but if you use TIDE_START=-2 and initialise with GMT phases for a particular time and plan to analyse with t_tide (which assumes all harmonics GMT phase, same as TPXO and all the other global tidal datasets that I know of) you need to think...
- Fri Aug 31, 2018 2:18 am
- Forum: ROMS Tools and Techniques
- Topic: How to "ls" filenames on thredds / opendap catalog
- Replies: 2
- Views: 1147
Re: How to "ls" filenames on thredds / opendap catalog
John W, Thank you very much for the reply and I imagine I am not the only one who will find it useful. I am not in control of the THREDDS service, but I must admit that the idea of configuring my own thredds sounds like acquiring yet another complex skill that will be redundant by the next time I ne...
- Thu Aug 30, 2018 2:51 am
- Forum: ROMS Tools and Techniques
- Topic: How to "ls" filenames on thredds / opendap catalog
- Replies: 2
- Views: 1147
How to "ls" filenames on thredds / opendap catalog
Is there such a thing as a matlab function that lists the filenames in a thredds / opendap catalog? (That is, an equivalent to "ls" for opendap?) Typically the filenames contain a date string, eg http:\\thredds\...\...\xxx20091123T173000Zxxx.nc. Normally I would loop through hour by hour, construct ...
- Sat Feb 24, 2018 4:29 am
- Forum: ROMS Problems
- Topic: Regarding the option TIDENAME
- Replies: 8
- Views: 2315
Re: Regarding the option TIDENAME
Thanks, Mark! I see that ramp is still there.
- Thu Feb 22, 2018 12:43 pm
- Forum: ROMS Problems
- Topic: Regarding the option TIDENAME
- Replies: 8
- Views: 2315
Re: Regarding the option TIDENAME
For some reason I was under the impression that RAMP_TIDES had been effectively hardwired in a few years back. From what you (Mark) are saying, I was wrong about that.
- Fri Jan 19, 2018 10:26 am
- Forum: ROMS Tools and Techniques
- Topic: EASYGRID: Grid generation for ROMS
- Replies: 24
- Views: 19157
Re: EASYGRID: Grid generation for ROMS
GridBuilder - see discussion elsewhere in roms forum.
http://austides.com/downloads/
http://austides.com/downloads/
- Wed Jan 17, 2018 5:14 am
- Forum: ROMS Discussion
- Topic: problem in tide simulation
- Replies: 3
- Views: 1456
Re: problem in tide simulation
Ivica is right of course, but if I had to hazard a guess, I would say ROMS is doing okay in the interior,and the problem is with OTPS in shallow coastal water. But then, we don't know if those interior points are in shallow coastal water.
- Tue Jan 09, 2018 5:54 am
- Forum: ROMS Results
- Topic: Latteral boundary condition problem
- Replies: 11
- Views: 64176
Re: Latteral boundary condition problem
Yadu, I'm not sure when I'll get in to the office where the code you requested is located. Until then you might try following some more recent notes I made to myself after downloading HYCOM data (obviously your times and lats and lons will be different, and I only downloaded the surface data (level ...
- Mon May 15, 2017 12:14 am
- Forum: ROMS Discussion
- Topic: Tidal Forcing File
- Replies: 16
- Views: 5231
Re: Tidal Forcing File
My suggestion would be to assume your tides are ok, and move on to whatever process you are really interested in. At some point, use t_tide or something to analyse the ROMS hourly data for a point near where your harmonics are from, but don't get too hung up on an exact match to amplitude or phase. ...
- Sun May 14, 2017 11:26 pm
- Forum: ROMS Discussion
- Topic: Tidal Forcing File
- Replies: 16
- Views: 5231
Re: Tidal Forcing File
My second suspicion would be that there is something wrong with the tide gauge. Do you have a reliable set of harmonics? If the amplitudes of the two major harmonics (probably M2 and S2) sum to about .15 m, then the data is in error.
- Sun May 14, 2017 9:55 pm
- Forum: ROMS Discussion
- Topic: Tidal Forcing File
- Replies: 16
- Views: 5231
Re: Tidal Forcing File
Giannis, It might be timely to mention that I have not updated TPXO2ROMS.m since before 19 April 2017, when Hernan updated the way ROMS keeps time (I haven't updated my ROMS yet either). It isn't obvious to me, from ticket 724, whether TPXO2ROMS.m actually requires updating. First, the ticket says t...
- Sun Apr 09, 2017 9:50 pm
- Forum: ROMS Results
- Topic: Latteral boundary condition problem
- Replies: 11
- Views: 64176
Re: Latteral boundary condition problem
My apologies. The link at the end of this contains LatLonTopo.mat (as well as the matlab functions). It is simply a mat-file version of: http://tds.hycom.org/thredds/dodsC/datasets/GLBa0.08/analysis/topo/GLB_depth_2d.nc ...which is what HYCOM uses for seafloor topography. I cannot remember why I cre...
- Tue Apr 04, 2017 9:45 pm
- Forum: ROMS Results
- Topic: Latteral boundary condition problem
- Replies: 11
- Views: 64176
Re: Lateral boundary condition problem
Here is a link to some somewhat dated Matlab functions - two are for downloading HYCOM reanalysis, one is for preparing a boundary file. Beware that I wrote them in 2013 and I would probably do the boundary file function differently if I did it now (I'm including it as you may find it a useful start...
- Mon Mar 20, 2017 10:01 pm
- Forum: ROMS Installation
- Topic: A confusion about TIDE_START (COAWST_SANDY CASE)
- Replies: 2
- Views: 2005
Re: A confusion about TIDE_START (COAWST_SANDY CASE)
Hi Rocky, You have: DSTART = 56228.5d0 56228.5d0 ! days TIDE_START = 52866.0d0 ! days TIME_REF = 18581117.0d0 ! yyyymmdd.dd 1. Why do you have two values of DSTART? 2. Did you mean to have DSTART=TIDE_START? Just checking, because the digits are similar but not the same. 3. You seem to have three di...
- Sun Jan 29, 2017 9:23 pm
- Forum: ROMS Installation
- Topic: Anyone tried running ROMS on HPC Cloud (e.g. Amazon)?
- Replies: 8
- Views: 7063
Re: Anyone tried running ROMS on HPC Cloud (e.g. Amazon)?
A few years ago we got interested in this and we simply copied the oceanM, ocean.in, and input data files up to Amazon and had it running in about ten minutes from go to whoa. The oceanM was an mpich2/mpif90/ifort/netcdf4 compile on an HPC system. The next step would be to re-compile on Amazon in or...
- Fri Sep 23, 2016 5:06 am
- Forum: ROMS Discussion
- Topic: Running ROMS Job with different number of nodes/processors
- Replies: 3
- Views: 1985
Re: Running ROMS Job with different number of nodes/processo
Hopefully/probably Kate's approach will help you solve it. But I'm also wondering what sort of dynamics you are using. Can you post the cppdefs? Also, what are the values of Lm, Mm, and N? Ad do you mean by "SST difference"? PS the 16x16 solution looks to be going mentally unstable or something. Or ...
- Thu Aug 18, 2016 10:04 am
- Forum: ROMS Installation
- Topic: ROMS using Windows 10
- Replies: 6
- Views: 4888
Re: ROMS using Windows 10
Thanks Rodrigo. I hope to give it another try (next week, inshallah). John
- Wed Aug 17, 2016 12:01 am
- Forum: ROMS Installation
- Topic: ROMS using Windows 10
- Replies: 6
- Views: 4888
Re: ROMS using Windows 10
rduran, after reading your comment, I decided to look into the Ubuntu that comes with Windows 10. A Ubuntu website explained that you must first join Windows Insiders, which I did. The next step is to sign up for receiving Windows Preview Builds. When you go to do that, you receive a warning that yo...
- Thu Jun 23, 2016 1:18 am
- Forum: ROMS Discussion
- Topic: tide problem
- Replies: 9
- Views: 4197
Re: tide problem
Thank you for spelling that out Kate (and John W). I saw a comment once which made me think that your usual procedure was to have your boundary file temporally resolve the tides, so that is what I thought you meant by suggesting "ADD_XXOBC". But now I understand from your last comment that you would...
- Wed Jun 22, 2016 11:15 pm
- Forum: ROMS Discussion
- Topic: tide problem
- Replies: 9
- Views: 4197
Re: tide problem
I should clarify - I thought Kate was suggesting that tides could be added using ADD_FSOBC and ADD_M2OBC as an alternative to using SSH_TIDES and UV_TIDES - in other words, by adding tidal time series to the subtidal 2D sea level and velocity time series at the boundary (outside of ROMS). My point w...
- Wed Jun 22, 2016 4:57 am
- Forum: ROMS Discussion
- Topic: tide problem
- Replies: 9
- Views: 4197
Re: tide problem
Here are the cpp defs I use for tides ONLY runs. I think Kate adds tides differently to the way I do - I don't define ADD_FSOBC and ADD_M2OBC. Either approach works but probably it will fail if you try to use both together. Note - be sure to set N == 1 in your inputs file, (the line after where you ...
- Tue Jun 07, 2016 4:17 am
- Forum: ROMS Discussion
- Topic: help,blocks of result!
- Replies: 4
- Views: 2492
Re: help,blocks of result!
Hard to say, but it appears to be a Chrysler product.
- Fri Jan 29, 2016 3:20 am
- Forum: ROMS Problems
- Topic: Unrealisitic thickness of mixed layer
- Replies: 15
- Views: 12081
Re: Unrealisitic thickness of mixed layer
I am responding to Kate's remark that the standalone MY mixing scheme may not be as reliable as the one in GLS. I did a simple test, which was two restarts of a well-tested coastal/shelf model, ran each for two years, saving five-day averages. One had the standalone, one had the GLS version. I looke...
- Wed Jan 27, 2016 8:44 pm
- Forum: ROMS Tools and Techniques
- Topic: seagrid2roms ---ncmex (line 110) Undefined "fcn"
- Replies: 9
- Views: 5465
Re: seagrid2roms ---ncmex (line 110) Undefined "fcn"
I will point out your question to the author (Charles James). I'm pretty sure we can find a solution. Actually we have the same rule here, but we are allowed to install some freeware (like GridBuilder) if we get permission. Also, many of us bring in our own Windows machines for this sort of thing. T...
- Wed Jan 27, 2016 6:13 am
- Forum: ROMS Tools and Techniques
- Topic: seagrid2roms ---ncmex (line 110) Undefined "fcn"
- Replies: 9
- Views: 5465
Re: seagrid2roms ---ncmex (line 110) Undefined "fcn"
What I will say is that if you use GridBuilder (http://austides.com/downloads/) instead of seagrid it will be like going from a bicycle to a Ferrari. An old bicycle with innumerable broken parts, to a new Ferrari.
- Thu Aug 06, 2015 9:35 pm
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
I'm overseas at the moment but I will answer as best I can from memory. TPXO2ROMS 4.x is designed to run with TPXO 8.1 not TPXO 7.x.. You should download 8.1. I believe you cannot accurately simulate tides for more than one year with ROMS because it doesn't allow the nodal factors (f and u) to vary ...
- Thu Jul 16, 2015 7:20 am
- Forum: ROMS Discussion
- Topic: IMPOSED SEA LEVEL AND TIDE. Inversed barometer effect
- Replies: 3
- Views: 1960
Re: IMPOSED SEA LEVEL AND TIDE. Inversed barometer effect
Bear in mind that the ocean adjusts to atmospheric pressure gradients through long waves and currents generated by wind stress. Both pretty easy to model if they are within your domain but you imply your domain is small and you want to model remotely-generated effects to enter at the boundary. Becau...
- Sat May 16, 2015 12:18 pm
- Forum: ROMS Discussion
- Topic: restart fail multi-part file case
- Replies: 2
- Views: 1459
Re: restart fail multi-part file case
Great work! Thanks very much. Also a good example of how the forum can be helpful to many.
- Fri May 15, 2015 1:55 am
- Forum: ROMS Discussion
- Topic: restart fail multi-part file case
- Replies: 2
- Views: 1459
restart fail multi-part file case
Restarts may fail with an error message like: GET_CYCLE - ending time for multi-file variable: sms_time is less than current model time. TMAX = 15196.5000 TDAYS = 15862.0000 (could be srf_time, etc. rather than sms_time). Multi-part files are when you break up forcing (or climatology or boundary) in...
- Mon Apr 13, 2015 10:06 pm
- Forum: User Applications
- Topic: LTRANS and wetting and drying
- Replies: 6
- Views: 4494
Re: LTRANS and wetting and drying
Lawrence have you considered doing the particle tracking in ROMS? While I am asking, I wonder if anyone has compared the accuracies of the two approaches. I have always assumed the ROMS approach could be more accurate, since the positions would usually be updated more frequently than one would save ...
- Thu Feb 26, 2015 3:42 am
- Forum: ROMS Problems
- Topic: segmentation fault when using averages_detide
- Replies: 1
- Views: 1583
Re: segmentation fault when using averages_detide
I have not gone back and looked at the code, but from curiosity I did try doing a quick run with AVERAGES_DETIDE turned on, and then a second run which tried to use the same tide forcing file. I also got an error message that it cannot find the variable Hcount. As you probably know, ROMS writes some...
- Thu Jan 29, 2015 10:07 am
- Forum: ROMS Tools and Techniques
- Topic: problem in seagrid2roms (built in win32 system)
- Replies: 6
- Views: 4121
Re: problem in seagrid2roms (built in win32 system)
I should have mentioned that with Charles' Seagrid, I'm pretty sure you won't need seagrid2roms.
- Thu Jan 29, 2015 9:58 am
- Forum: ROMS Tools and Techniques
- Topic: problem in seagrid2roms (built in win32 system)
- Replies: 6
- Views: 4121
Re: problem in seagrid2roms (built in win32 system)
My colleague, Charles James, has just completed writing a version of Seagrid in Matlab 2014b. I have no doubt that his version will suffer none of the issues (bugs, infuriating complexity, etc.) that plague Seagrid. I have seen it, and it looks great. I think the GSHHG coastlines and etopo 1 or 2 or...
- Tue Dec 09, 2014 5:15 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
I look forward to trying this myself!
Thanks Thomas.
John
Thanks Thomas.
John
- Fri Dec 05, 2014 1:06 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
You are quite right of course. Thanks for pointing this out.
I do not know of any python script for this.
John
I do not know of any python script for this.
John
- Thu Oct 23, 2014 1:17 am
- Forum: ROMS Source
- Topic: NTSHIS
- Replies: 0
- Views: 2137
NTSHIS
Would it be useful to add a variable NTSHIS to ocean.in (similar to NTSAVE)? Seems like it might be handy for debugging a crash (could start outputting every time step for the final few timesteps) or for looking at tides (to save only the last couple of weeks of hourly data).
- Tue Mar 25, 2014 1:41 am
- Forum: ROMS Bugs
- Topic: undef SOLVE3D
- Replies: 4
- Views: 1999
Re: undef SOLVE3D
Thank you again, Kate. What I have found is that the speed-up for running in 2D as opposed to a 3-level 3D model was less than a factor of two (on my test grid). If that is true in general then many people will probably find it isn't worth the bother to go to 2D (simpler just to reduce the number of...
- Sun Mar 23, 2014 9:14 pm
- Forum: ROMS Bugs
- Topic: undef SOLVE3D
- Replies: 4
- Views: 1999
Re: undef SOLVE3D
Thank you, Kate. Yes, ANA_SSFLUX was the culprit. For those who might be wondering, what I think comes down to is that the same variable name (stflux) is used to mean "surface tracer flux" in the context of the ana_stflux.h subroutine, whereas it specifically refers to "surface heat flux" in the con...
- Thu Mar 20, 2014 9:32 pm
- Forum: ROMS Bugs
- Topic: undef SOLVE3D
- Replies: 4
- Views: 1999
undef SOLVE3D
When I undefined SOLVE3D (let's just say out of morbid curiosity), it would not compile. The first error was easy to fix (minor coding issue at around line 846 in inp_par.F). The second fix is less obvious to me but I think it may be obvious to ROMS programmers (if not I will provide more info). Pre...
- Wed Mar 19, 2014 1:45 am
- Forum: ROMS Bugs
- Topic: Possible bug with check_multifile.F changeset 713
- Replies: 5
- Views: 3102
Re: Possible bug with check_multifile.F changeset 713
Thanks for the prompt response, Hernan. Well here is the error message: CHECK_MULTIFILE - Error while checking input Lateral Boundary file: ../DATA/bry_AD_1_Nsig3_01Mar14_09Mar14.nc last data time record available is for day: 0 04:38:46 but data is needed to finish run until day: 16726 00:00:00 Here...
- Tue Mar 18, 2014 10:09 pm
- Forum: ROMS Bugs
- Topic: Possible bug with check_multifile.F changeset 713
- Replies: 5
- Views: 3102
Re: Possible bug with check_multifile.F changeset 713
Just updated to 724M. Wouldn't run until I added a line
Tmax=Tmax*day2sec
to check_multifile.F right after Tmax is defined (approx line 117).
Puzzling because this should have been a problem for others long before today, at least since 713M. My apologies if this is a false lead.
Tmax=Tmax*day2sec
to check_multifile.F right after Tmax is defined (approx line 117).
Puzzling because this should have been a problem for others long before today, at least since 713M. My apologies if this is a false lead.
- Thu Nov 21, 2013 12:47 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
TPXO2ROMS_v4pt0.zip This new version of TPXO2ROMS (TPXO2ROMSv4pt0) reads from the new TPXO 8 atlas. The most important harmonics in TPXO8 are at 1/30 degree resolution (as opposed to 1/4 degree for version 7.2 and earlier). There are other improvements in TPXO 8 as well (see http://volkov.oce.orst....
- Mon Oct 28, 2013 1:42 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
A week or two ago I posted an update of TPXO2ROMS and some comments about the new Matlab netcdf interface commands ncread, ncwrite, etc. Since I did so by editing a previous post, there was no notification sent out (as far as I know). TPXO2ROMS users are advised to download this update. I would be i...
- Wed Oct 23, 2013 10:50 pm
- Forum: ROMS Discussion
- Topic: TIMELESS_DATA
- Replies: 1
- Views: 929
TIMELESS_DATA
I happened to notice that (at least with version 3.7) ROMS did not write out the name of the tidal forcing file for a purely tidal-forced run until I changed line 4597 in read_phypar.F from #if defined FRC_FILE to #if defined FRC_FILE || defined TIMELESS_DATA Not sure if that was the best fix but it...
- Thu Oct 17, 2013 3:04 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
This version (3.1) should be used. The one I put up a couple of weeks ago saved transports instead of velocities (my apologies). I also made a number of lesser changes which noted are at the start of the function. 23 October note - the new Matlab/netcdf interface commands ncread, nccreate and ncwrit...
- Thu Oct 10, 2013 7:22 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Please send your next response to john.luick@austides.com, so we can go offline and thereby not annoy everyone with a troubleshooting exercise. Also, in your email, can you confirm that you are not plotting phase (rather than amplitude) in that first plot you sent?
- Thu Oct 10, 2013 12:56 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Looks good. Before I go further, what version of Matlab are you using? Must be R2012 or later.
- Wed Oct 09, 2013 8:40 pm
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Please pause Matlab right after the line: TPXO=readTPXOdata(TPXOfile_elev,TPXOfile_vel,TPXOfile_grid,lonR,latR); Then enter: zz=squeeze(TPXO.h.z(:,:,8)); contourf(abs(zz)) colorbar This will show if the values you are reading in are in correct units etc. What I get are numbers which are typical open...
- Tue Oct 08, 2013 4:03 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
The tide extraction software (TPXO2ROMS.m) I wrote and posted here last year has been updated. It requires at least R2012a but now uses the native Matlab netcdf interface instead of snctools. It also has improved interpolation (offers a choice between TriscatteredInterp.m and scatteredInterpolant.m/...
- Thu May 30, 2013 9:32 pm
- Forum: ROMS Discussion
- Topic: Multiple input files
- Replies: 17
- Views: 6568
Re: Multiple input files
Hernan, did you ever get around to enabling the use of multiple input files for climatology?
- Thu Dec 13, 2012 2:17 am
- Forum: ROMS Discussion
- Topic: Question about particle tracking
- Replies: 17
- Views: 5075
Re: Question about particle tracking
rduran, thanks very much for your comments. I have brought this up before on the forum but am still wondering about it. It would be handy if your test was something that could be easily run for any new application any time one wanted to decide whether to use inline or offline tracking. liyizhen: my ...
- Wed Dec 12, 2012 2:16 am
- Forum: ROMS Discussion
- Topic: Question about particle tracking
- Replies: 17
- Views: 5075
Re: Question about particle tracking
I meant to say: 18 cpus
- Wed Dec 12, 2012 2:15 am
- Forum: ROMS Discussion
- Topic: Question about particle tracking
- Replies: 17
- Views: 5075
Re: Question about particle tracking
liyizhen:
LTRANS v1
It speeds it up a LOT though the testing was not thorough. A normal run formerly took around 30 hours. With mpich it took an hour and a half or so.
LTRANS v1
It speeds it up a LOT though the testing was not thorough. A normal run formerly took around 30 hours. With mpich it took an hour and a half or so.
- Wed Dec 12, 2012 1:13 am
- Forum: ROMS Discussion
- Topic: Question about particle tracking
- Replies: 17
- Views: 5075
Re: Question about particle tracking
Is anyone aware of any studies that compare this "offline" tracking approach, with letting ROMS do the tracking? Assuming ROMS updates the positions at each timestep, the two results must diverge noticeably at some point. For example in shallow water with wind. Another freely available program that ...
- Sat Sep 29, 2012 1:15 am
- Forum: ROMS Bugs
- Topic: forcing the ROMS with ERA interim
- Replies: 17
- Views: 18407
Re: forcing the ROMS with ERA interim
I don't think they make six-hour data available. But you're asking in the wrong place. You should ask ECMWF via that website. If you want six-hour data you could go with NCEP. I think that you would then lose some spatial resolution however. Some of those ERA 12 hour fields are not instantaneous; th...
- Tue Jun 05, 2012 11:27 pm
- Forum: ROMS Installation
- Topic: step3d_t.F bug?
- Replies: 4
- Views: 2184
Re: step3d_t.F bug?
John, thanks for your comments which are always very helpful. I guess I should not have used the term "fluxes" as it was misleading - what I was referring to was the averaging (looks like averaging to me) done in the equation in my first post on this thread (averaging of Qsrc*Tsrc above and below th...
- Sun Jun 03, 2012 10:11 pm
- Forum: ROMS Installation
- Topic: step3d_t.F bug?
- Replies: 4
- Views: 2184
Re: step3d_t.F bug?
John, sorry could not get back to this sooner. Thanks very much for explaining that FC is defined at the w-points. In practical terms, since the fluxes are required at rho points, and this is done by taking a vertical average of the flux above and below each rho-point, the consequence of defining a ...
- Mon May 28, 2012 11:49 pm
- Forum: ROMS Installation
- Topic: step3d_t.F bug?
- Replies: 4
- Views: 2184
step3d_t.F bug?
I find that performance is improved tremendously if the following change is made in step3d_t.F (in the part where mass point sources are applied)... FROM: DO k=1,N(ng) FC(i,k)=FC(i,k)+0.5_r8* & & (Qsrc(is,k )*Tsrc(is,k ,itrc)+ & & Qsrc(is,k+1)*Tsrc(is,k+1,itrc)) END DO TO: DO k=1,N(ng)-1 FC(i,k-1)=F...
- Thu Apr 12, 2012 2:17 am
- Forum: ROMS Bugs
- Topic: small bug in reporting
- Replies: 1
- Views: 1201
small bug in reporting
I think that in read_phypar.F: # ifdef T_PASSIVE DO i=1,NPT itrc=inert(i) WRITE (out,185) LtracerSrc(i,ng), 'LtracerSrc', itrc, & & 'Processing point sources/Sink on tracer ', itrc, & & TRIM(Vname(1,idTvar(itrc))) END DO # endif LtracerSrc(i,ng) should be changed to LtracerSrc(NAT+i,ng) It only affe...
- Mon Apr 09, 2012 11:01 pm
- Forum: ROMS Problems
- Topic: INQUIRE unable to find....
- Replies: 7
- Views: 3457
Re: INQUIRE unable to find....
Kate, thanks for that - indeed I did not always have ana_spflux and/or ana_bpflux defined before, and it took me some while (and with some help) to realise they were required (and indeed this was my main problem, since I do not provide surface and fluxes using netcdf files). I was going to add this ...
- Thu Mar 29, 2012 9:45 pm
- Forum: ROMS Problems
- Topic: INQUIRE unable to find....
- Replies: 7
- Views: 3457
Re: INQUIRE unable to find....
Thanks, Hernan, for this explanation, and for your post yesterday. You are quite right; I did think that there was a connection between the 3D state variable and the point source. This now makes much better sense. This also explains why it ran when T_PASSIVE was turned off. I also got rid of all ref...
- Thu Mar 29, 2012 8:27 pm
- Forum: ROMS Problems
- Topic: INQUIRE unable to find....
- Replies: 7
- Views: 3457
Re: INQUIRE unable to find....
Thank you, Kate, for asking this. I started to experiment with adding it to varinfo.dat, but HOW to do it wasn't obvious because of the way "_sflux" is tacked on within the program after the 01, 02, etc., so I gave up and when home feeling rather frustrated. Nice to see your post this morning.
- Wed Mar 28, 2012 11:55 pm
- Forum: ROMS Problems
- Topic: INQUIRE unable to find....
- Replies: 7
- Views: 3457
INQUIRE unable to find....
This is an oddity...but then, so is everything until someone explains it, I suppose... ROMS stops with the following message from inquire.f90: INQUIRE - unable to find requested variable: in files: ...etc. (then it lists all the netcdf forcing files). Notice that the variable field is blank! What is...
- Wed Mar 07, 2012 1:27 pm
- Forum: ROMS Information
- Topic: Central East Florida Shelf Realistic Application Setup Help
- Replies: 7
- Views: 8212
Re: Central East Florida Shelf Realistic Application Setup H
I'm in a hotel room somewhere and unable to check my facts, but you have reminded me of a question so will take the opportunity to reply. As I recalled there was one (and I think only one) realistic coastal application a few years ago when I first started using Rutgers ROMS, called NJ_BIGHT or somet...
- Thu Jan 19, 2012 4:04 am
- Forum: ROMS Documentation
- Topic: imposing tidal boundary conditions in parent and child 1 way
- Replies: 5
- Views: 5931
Re: imposing tidal boundary conditions in parent and child 1
Hi Ivica,
thanks for the explanation and offer of scripts. I could use all the ones you mentioned. Not sure of the best way but one way is to email them to john.luick@sa.gov.au.
John
thanks for the explanation and offer of scripts. I could use all the ones you mentioned. Not sure of the best way but one way is to email them to john.luick@sa.gov.au.
John
- Wed Jan 18, 2012 3:42 am
- Forum: ROMS Documentation
- Topic: imposing tidal boundary conditions in parent and child 1 way
- Replies: 5
- Views: 5931
Re: imposing tidal boundary conditions in parent and child 1
Good article. I have been using your method "1"; now I will try your method "2". Have you written a script to do the tidal analysis and create the child BCs? If so I (and probably others) would appreciate a copy. Otherwise I'll write something that fits in with the new boundary condition scripts Ara...
- Tue Jan 03, 2012 9:42 pm
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Eli, thanks for pointing these things out. I haven't updated snctools in a long time and clearly it is time to do that. I think that the Marchesiello/Penven/Gambon team will be revising make_tides soon, and perhaps now also you will be making your tide software extraction software simpler to use. Wh...
- Thu Dec 22, 2011 9:09 pm
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
Hi Chilequan, thanks for your interest. I'm unable to reproduce this error, and to tell the truth, I can't see how it could arise (since min(min.. only seems to return a single value even there are two equal minimums), but your solution appears reasonable. If you like, when your exams are finished, ...
- Sat Dec 17, 2011 3:33 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
I'm glad you mentioned this Patrick. I used to use make_tides and am indebted to it's authors - thank you! The main reason I wrote this was (as I recall) at the time, at least, make_tides required the use of a tidal database (provided with ROMS_Tools) derived from TPXO 6.x, rather than directly usin...
- Thu Dec 15, 2011 10:11 am
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
Re: TPXO to ROMS EXPRESS (tide extraction software)
The problem is with your unzipping software. Here is a link to an evaluation version of WinZip that does work: http://download.cnet.com/WinZip/3000-2250_4-10003164.html There is plenty of other free compression software. Yes, I tried WinRAR and it failed. Or you can go to my rather dusty and moth-ea...
- Wed Dec 14, 2011 9:55 pm
- Forum: ROMS Tools and Techniques
- Topic: TPXO to ROMS EXPRESS (tide extraction software)
- Replies: 80
- Views: 27876
TPXO to ROMS EXPRESS (tide extraction software)
I have attached my matlab script for extracting the tidal harmonics from the TPXO 7.2 netcdf files and creating a forcing file for ROMS. I've put everything required (I hope) in the zip file. It also does some plots to check the results. My goal, in writing it, was to simplify the process provided i...
- Fri Oct 07, 2011 1:43 am
- Forum: ROMS Discussion
- Topic: Can we have only passive tracers in rivers/point sources?
- Replies: 40
- Views: 11425
Re: Can we have only passive tracers in rivers/point sources
Interesting - but mine is stable with TS_DIF2, MIX_S_UV, and MIX_GEO_TS. Same as yours with the addition of MIX_S_UV (unless you have that and didn't mention it). I just mention it in case it helps you track down the problem. John
- Sat Sep 17, 2011 2:59 am
- Forum: ROMS Discussion
- Topic: Can we have only passive tracers in rivers/point sources?
- Replies: 40
- Views: 11425
Re: Can we have only passive tracers in rivers/point sources
Mark, I had the same problem until I restricted the inflow to the top bin or few bins (I forget just now). I would be interested to know the outcome if you were to try this (top bin only).
But what if inflow is at or near the bottom, like the brine from a desal plant. Has someone sorted this out?
But what if inflow is at or near the bottom, like the brine from a desal plant. Has someone sorted this out?
- Mon May 16, 2011 11:06 pm
- Forum: ROMS Discussion
- Topic: Treatment of rivers
- Replies: 20
- Views: 19628
Re: Treatment of rivers
Kate, thanks for your reply. Now that I have actually implemented a source in them model interior, I understand a bit better how it works, and will put some hints on a more active and relevant thread. But as to what I was asking about, it turns out this was implemented with 3.5 using LtracerSRC (for...
- Wed May 11, 2011 12:57 am
- Forum: ROMS Discussion
- Topic: Treatment of rivers
- Replies: 20
- Views: 19628
Re: Treatment of rivers
Regarding the internal waves generation problem mentioned by John Wilkin in an early post on this thread... how difficult would it be to add an option, and modify the code, to set the river T and S to the ambient ocean values at each vertical level? Would that solve the problem? Seems like this woul...
- Sun Sep 05, 2010 10:29 am
- Forum: ROMS Problems
- Topic: Results and issues of barotropic tidal run
- Replies: 14
- Views: 6296
Re: Results and issues of barotropic tidal run
Ban, did you resolve this issue? I've been hoping to hear you did. I think Hernan spelled it out clearly - and it wouldn't matter much whether you are talking about 13 days or 40 days. You need more days. Also, for a given number of days, you may get very different harmonic amplitudes depending on t...
- Mon Aug 30, 2010 12:00 am
- Forum: ROMS Problems
- Topic: Results and issues of barotropic tidal run
- Replies: 14
- Views: 6296
Re: Results and issues of barotropic tidal run
BAN,
probably my arithmetic is wrong, but if I am correct, you only ran the model for 23 days or so, and since you don't use the first ten days, that would mean you only analysed only 13 days. If so I am surprised the results are so good!
John
probably my arithmetic is wrong, but if I am correct, you only ran the model for 23 days or so, and since you don't use the first ten days, that would mean you only analysed only 13 days. If so I am surprised the results are so good!
John
- Fri Aug 27, 2010 1:52 am
- Forum: ROMS Problems
- Topic: Results and issues of barotropic tidal run
- Replies: 14
- Views: 6296
Re: Results and issues of barotropic tidal run
Ban
can you tell us some more about your adcp data, in particular - how many days went into the analysis behind the profiles?
John
can you tell us some more about your adcp data, in particular - how many days went into the analysis behind the profiles?
John
- Fri Jul 23, 2010 2:53 am
- Forum: ROMS Discussion
- Topic: Why I got such a different tide solution using TPXO data
- Replies: 13
- Views: 5143
Re: Why I got such a different tide solution using TPXO data
I think Gouillon's idea to run for M2 only is good, but perhaps I'd make a slight change (or do both). Rather than adding M2 "analytically", consider using a netcdf file. (Easy to create because you just modify the script you are currently using to create TPXO tides input.) If you do it analytically...
- Mon Jun 14, 2010 11:42 pm
- Forum: ROMS Problems
- Topic: urgent problem on time ref and tide_start !!!!!!!
- Replies: 11
- Views: 5310
Re: urgent problem on time ref and tide_start !!!!!!!
Thank you Gildas for that explanation! Given that I previously recommended using TIME_REF=-2, I should mention that if you do so (i.e. if you use TIME_REF=-2 in the Rutgers code) then time and phase lag will not be referenced as described near the end of Gildas' explanation. Rather, they will be ref...
- Thu Jun 10, 2010 2:27 am
- Forum: ROMS Problems
- Topic: urgent problem on time ref and tide_start !!!!!!!
- Replies: 11
- Views: 5310
Re: urgent problem on time ref and tide_start !!!!!!!
Was there ever a question on the forum that was not urgent? If you want to forecast tides, I suggest you use something like: DSTART=14652 !Modified Julian Days since 1968-05-23 00:00:00 GMT TIDE_START=14652 !Se equal to DSTART TIME_REF=-2 This example will start the model running at 0000 Hours on 4 ...
- Tue Jun 08, 2010 1:02 am
- Forum: ROMS Discussion
- Topic: ROMS tide amplitude problem
- Replies: 5
- Views: 3057
Re: ROMS tide amplitude problem
Do you have any data that you can check your OTPS elevations and currents against? Ultimately if you decide the OTPS amplitudes are too small at the open boundary you may have to construct a larger grid out to deep water to run your tidal model on. Then, take the open boundary conditions for the sma...
- Tue May 11, 2010 12:44 am
- Forum: ROMS Trivia
- Topic: Sock news
- Replies: 9
- Views: 5455
Re: Sock news
I second the motion to have the next meeting in Alaska (Fairbanks).
I further move that a prize be given to the participant that traveled the greatest distance to get there.
I further move that a prize be given to the participant that traveled the greatest distance to get there.
- Fri Feb 12, 2010 7:06 am
- Forum: ROMS Discussion
- Topic: offline-nested BCs vanish!
- Replies: 2
- Views: 1434
Re: offline-nested BCs vanish!
jivica, thanks very much, that fixed the problem...which is strange because I am not, in fact, adding tides at the boundary. If you read my email carefully, you will see that things were fine, it was just that when I turned the tides on, the tides were fine, but the subinertial waves disappeared. I ...
- Thu Feb 11, 2010 11:49 pm
- Forum: ROMS Discussion
- Topic: offline-nested BCs vanish!
- Replies: 2
- Views: 1434
offline-nested BCs vanish!
Can anyone suggest why the sea level and velocity boundary conditions, which are read in by my nested model (nested in the "offline" sense), appear to be ignored when I add tides to it? Here are the relevant switches used prior to adding tides: #undef SSH_TIDES #undef UV_TIDES #define WEST_FSCHAPMAN...
- Sun Nov 01, 2009 9:40 pm
- Forum: ROMS Tools and Techniques
- Topic: Error in make_clim
- Replies: 2
- Views: 1259
Re: Error in make_clim
Vinay, I am not sure, but I think the error is actually because make_clim.m uses the Chuck Denham set of tools, as I have noticed some similar limitations in the past with them. One solution is the following. Where there is a line such as var=nf{'wind'}(:); replace it with the new netcdf commands av...
- Thu Aug 27, 2009 7:26 am
- Forum: ROMS Discussion
- Topic: FSCHAPMAN/M2FLATHER/M3RADIATION not fully radiative
- Replies: 5
- Views: 2176
Re: FSCHAPMAN/M2FLATHER/M3RADIATION not fully radiative
Well, in case anyone has a clue, here is a snapshot of what happens at the boundary. sarom.png The aberrant velocities are at column Iend-1. (The ubar BCs at the eastern boundary are calculated at Iend+1; they are not plotted). ubar is too small at Iend; vbar is too big at Iend-1. The colours here a...
- Sun Aug 23, 2009 11:46 pm
- Forum: ROMS Discussion
- Topic: FSCHAPMAN/M2FLATHER/M3RADIATION not fully radiative
- Replies: 5
- Views: 2176
Re: FSCHAPMAN/M2FLATHER/M3RADIATION not fully radiative
Thanks Kate and John W for your responses. The Chapman paper makes the point that there is no universally best method in all the types he tested, and that the choice can have profound effects on the solution well away from the boundary. In my tests (which are similar to the Kelvin test case, but wit...
- Wed Aug 19, 2009 3:12 am
- Forum: ROMS Discussion
- Topic: FSCHAPMAN/M2FLATHER/M3RADIATION not fully radiative
- Replies: 5
- Views: 2176
FSCHAPMAN/M2FLATHER/M3RADIATION not fully radiative
It looks to me like the combination FSCHAPMAN/M2FLATHER/M3RADIATION are not radiating fully. I am experimenting with a barotropic model driven only by a free surface boundary condition on a western boundary in the southern hemisphere. The northern boundary is a coastal wall (the depth shoals). The w...
- Sun Jul 19, 2009 11:25 pm
- Forum: ROMS Tools and Techniques
- Topic: New S-coordinate transformation; question about hc
- Replies: 4
- Views: 3286
Re: New S-coordinate transformation; question about hc
I believe there is a minor error in scoord.F. It only affects writing to stdout. (Version 348 2009-04-17). The line near the end that reads cff1=hc(ng) *(SCALARS(ng)%sc_w(k)*hc(ng)+ & & SCALARS(ng)%Cs_w(k)*hc(ng))/(hc(ng)+hc(ng)) should read cff1=hmin(ng) *(SCALARS(ng)%sc_w(k)*hmin(ng)+ & & SCALARS(...
- Thu Oct 09, 2008 12:47 am
- Forum: ROMS Discussion
- Topic: Tidal effection with analytical expression
- Replies: 3
- Views: 1331
Re: Tidal effection with analytical expression
I agree with Wilkin, but if you insist on trying this (i.e. you don't care about accurately reproducing the tides, just want some tidal dispersion) just drive one boundary the way the kelvin test case does. Your tides are in phase all around the boundary! You are driving it like an eskimo blanket to...
- Tue Jul 01, 2008 4:41 am
- Forum: ROMS Discussion
- Topic: Is there anyone who use Romstools to create tidal forcing?
- Replies: 8
- Views: 6160
Re: Is there anyone who use Romstools to create tidal forcing?
If you just want to check if you are understanding the phase correctly, use a single purely solar constituent like S2 that is not affected by the nodal modulation. Then worry about the nodal modulation later. It modulates the amplitude and phase of the lunar constituents. You can write yourself a li...
- Mon Jun 02, 2008 2:42 am
- Forum: ROMS Bugs
- Topic: KELVIN case typo
- Replies: 9
- Views: 5887
kelvin case
Since the topic is being discussed, perhaps it is worth mentioning that the kelvin case boundary conditions presently only work in the northern hemisphere. Down here where f changes sign the exponential blows up. (I added an "ABS" to the exponential.) Also as I recall the combination of COS and SIN ...
- Sun Nov 06, 2005 8:26 pm
- Forum: ROMS Problems
- Topic: Blow-up
- Replies: 3
- Views: 2857
Blow-up
Kate, thank you for the response to my question. I realise you have suggested this metric in a previous posting. After reading your response I went back and found that it was in fact violated (despite that I thought I'd smoothed sufficiently). So I took a different approach this time - starting from...
- Tue Nov 01, 2005 7:43 am
- Forum: ROMS Problems
- Topic: Blow-up
- Replies: 3
- Views: 2857
Blow-up
Before I waste any more time attempting the impossible, can someone advise me if my problem is simply unsuitable for ROMS? I want to model upwelling over a complex (coral reef) topography. The grid goes from the coast, across a coral-studded shelf about 40 m deep, out to deep water. There are numero...