Search found 33 matches

by backkom
Fri May 01, 2020 7:20 am
Forum: ROMS Bugs
Topic: Possible bugs in def_state.F
Replies: 1
Views: 205

Possible bugs in def_state.F

Hi, I am trying the latest ROMS package, and got a error when compiling with sediment module. cd /lustre/home/yaozhigang/Projects/Yandong/Build_roms; /opt/intel/compilers_and_libraries_2019.5.281/linux/mpi/intel64/bin/mpiifort -c -fp-model precise -heap-arrays -ip -O3 -traceback -check uninit def_gs...
by backkom
Tue Jul 30, 2019 2:17 am
Forum: ROMS Problems
Topic: variable not properly initialized in ROMS svn978 ?
Replies: 1
Views: 423

variable not properly initialized in ROMS svn978 ?

Hi, I am trying the latest ROMS svn978 code, by a ROMS + SWAN coupling application, activated by CPP option " #define SWAN_COUPLING, #define NEARSHORE_MELLOR08", but got a error message as follows: $ mpirun -np 20 ./romsM ./Input/coupling_eams_20190730.in > log.20190730 forrtl: severe (194): Run-Tim...
by backkom
Wed Jul 10, 2013 3:31 pm
Forum: ROMS Discussion
Topic: Doubts about the ERA-Interim
Replies: 4
Views: 5713

Re: Doubts about the ERA-Interim

I just checked the official website of ERA-Interim, and found that only four step (03, 06,09,12) are available with for the forecast varaibles such as precipitation and radiation flux, as listed in FAQ: 34. What are the 'steps' for the surface daily fields in ERA-Interim? The ERA-Interim data server...
by backkom
Wed Jul 10, 2013 3:27 am
Forum: ROMS Discussion
Topic: Doubts about the ERA-Interim
Replies: 4
Views: 5713

Re: Doubts about the ERA-Interim

Hi lolhsson, It is really glad to get some comments and reply~ I think your estimates for flux average-centered at 03, 09, 15 and 21 make sense, and I'm writing some scripts to convert my forcing files accordingly. I'm not positive if we can get away with using 00 and 12 directly; they are ... insta...
by backkom
Tue Jul 09, 2013 12:35 am
Forum: ROMS Discussion
Topic: Doubts about the ERA-Interim
Replies: 4
Views: 5713

Doubts about the ERA-Interim

Hi all, I have some doubts about ERA-Interim datasets after going through some posts in this forum, and wish someone can give me some guidance and comments. The ERA-Interim data used comes from http://rda.ucar.edu/datasets/ds627.2/, 6 hourly, thus for the forecast variables, such as precipitation an...
by backkom
Mon Jun 03, 2013 3:07 pm
Forum: ROMS Discussion
Topic: Doubts about the new OBC combination (Che + Shc)
Replies: 5
Views: 2477

Re: Doubts about the new OBC combination (Che + Shc)

Hi Sasha, I am really appreciated for your kind help on this topic~. P.S.: Your Minimum and Maximum barotropic Curant numbers are slightly different: 0.16 and 017 respectively, but I believe that this is flat bottom configuration. So why they are different? Since the model domain for my ideal test c...
by backkom
Sun Jun 02, 2013 1:46 am
Forum: ROMS Discussion
Topic: Doubts about the new OBC combination (Che + Shc)
Replies: 5
Views: 2477

Re: Doubts about the new OBC combination (Che + Shc)

What is your barotropic gravity wave Courant number in these experiments? Cg_max = ? Hi Sasha, Many thanks for your reply~ The Courant number for all thress experiments are as follows: (1) Control Run: 878: Minimum barotropic Courant Number = 1.01459937E-01 879: Maximum barotropic Courant Number = ...
by backkom
Thu May 30, 2013 8:23 pm
Forum: ROMS Discussion
Topic: Doubts about the new OBC combination (Che + Shc)
Replies: 5
Views: 2477

Doubts about the new OBC combination (Che + Shc)

Hi all, I want to know if there is any significant improvement in the artificial reflections, which comes from the improper setting of OBC, by using the latest combination: Chapman explicit (free surface) + Shchepetkin (2D momentum). So I made a simple test as follows: 1. Control Run: Experiment 1 A...
by backkom
Thu May 30, 2013 6:51 pm
Forum: ROMS Problems
Topic: How the set the zero gradient condition in ROMS?
Replies: 1
Views: 1234

Re: How the set the zero gradient condition in ROMS?

fengfengsister wrote:Dear all,
How to set a zero gradient condition at the sea boundary in ROMS?

Thank you very much.

Do you mean the Gradient boundary condition (Gra), which you can specify in your .in file.
by backkom
Wed May 29, 2013 6:31 pm
Forum: ROMS Discussion
Topic: forrtl: severe (174): SIGSEGV, segmentation fault occurred
Replies: 1
Views: 1636

forrtl: severe (174): SIGSEGV, segmentation fault occurred

Hi all, I want to know if there is anyone else has met the error described as follows: ROMS Reversion: 667 Operating system : Linux CPU/hardware : x86_64 Compiler system : ifort Compiler command : /opt/mpi/intel/mvapich2-1.8.1/bin/mpif90 Compiler flags : -heap-arrays -fp-model precise -ip -O3 -free ...
by backkom
Fri Jun 17, 2011 7:28 pm
Forum: ROMS Problems
Topic: Compiler error when turn on AVERAGES_DETIDE
Replies: 3
Views: 1117

Re: Compiler error when turn on AVERAGES_DETIDE

Hi, Kate


Thanks so much for your kind reply.

It works after I removed the 2th dimension: "ng" from variables: TIDE(ng)%Vid in def_tide.F. I have already create a ticket to ROMS track.

Again thanks for your help.

Best regards.
by backkom
Fri Jun 17, 2011 3:25 pm
Forum: ROMS Problems
Topic: Compiler error when turn on AVERAGES_DETIDE
Replies: 3
Views: 1117

Compiler error when turn on AVERAGES_DETIDE

Hi all, I got some compiling problem :? and hope that anyone has the experience can give me some guidance. My ROMS version is 561. Since there are more than one tidal components included in my tidal forcing file, I am trying to turn on the cpp option: AVERAGES_DETIDE to remove the tidal signal from ...
by backkom
Wed May 20, 2009 4:56 pm
Forum: ROMS Usage
Topic: Blow up when MASKING is activated!
Replies: 3
Views: 1496

Re: Blow up when MASKING is activated!

Hi,kate
I carefully check the mask_rho,mask_u,mask_v,just like what you said,there are some wrong mask points in mask_u and mask_v. and model seems works well now.
Thanks again for your kind help,kate :D !
by backkom
Tue May 19, 2009 9:24 pm
Forum: ROMS Usage
Topic: Blow up when MASKING is activated!
Replies: 3
Views: 1496

Re: Blow up when MASKING is activated!

kate,thanks for your reply!
my mask is generated by uvp_mask.m,and then I manually edit using editmask.m. the code is as follows:

Code: Select all

[Mp,Lp]=size(mask_rho);
M=Mp-1;
L=Lp-1;
%
mask_v=mask_rho(1:M,:).*mask_rho(2:Mp,:);
mask_u=mask_rho(:,1:L).*mask_rho(:,2:Lp);
mask_p=mask_u(1:M,:).*mask_u(2:Mp,:);
by backkom
Tue May 19, 2009 5:48 pm
Forum: ROMS Usage
Topic: Blow up when MASKING is activated!
Replies: 3
Views: 1496

Blow up when MASKING is activated!

Hi :D , I have a weired blow-up problem :( when ruuning a East china sea application. My domain is 117°-130°E, 24°-41°N, with grid resolution of 2'(about 35000m).my minimum depth is about 5m and maximum depth is 5000m.model is driven only by tidal elevation. Minimum available timestep is 20s by CFL ...
by backkom
Sat Mar 28, 2009 12:16 pm
Forum: ROMS Problems
Topic: Error : Ocean_time
Replies: 0
Views: 714

Error : Ocean_time

Hi,everyone When I run a tidal foring application ,something strange happened.It seems that zeta was set to zero periodically. I check variable 'ocean_time' in history file,which has the same error as zeta. Because RAMP_TIDE is used in my header file,the error in ocean_time could result in same erro...
by backkom
Tue Dec 23, 2008 1:56 pm
Forum: ROMS Discussion
Topic: Can't add the tidal forcing!
Replies: 3
Views: 1193

Re: Can't add the tidal forcing!

thanks kate for your kind reply! when runs,the output is as followd: INITIAL: Configuring and initializing forward nonlinear model ... Minimum X-grid spacing, DXmin = 6.93178755E+00 km Maximum X-grid spacing, DXmax = 8.64595367E+00 km Minimum Y-grid spacing, DYmin = 6.94181911E+00 km Maximum Y-grid ...
by backkom
Thu Dec 18, 2008 7:49 am
Forum: ROMS Discussion
Topic: Can't add the tidal forcing!
Replies: 3
Views: 1193

Can't add the tidal forcing!

Hi,everyone! i want to run a test 2D case only forced by tidal harmonics! the grid,bathy and tidal harmonics are given by external input files while others are described by analitical.but the model results are all zero which indicates the tidal forcing is not imposed,but why??? the header file is gi...
by backkom
Fri Oct 24, 2008 1:46 am
Forum: ROMS Usage
Topic: questions about tidal forcing
Replies: 13
Views: 2875

Re: questions about tidal forcing

Hi,kate
here thanks so much for your help!with your help i think i have understand this!
thanks!
by backkom
Thu Oct 23, 2008 1:08 pm
Forum: ROMS Usage
Topic: questions about tidal forcing
Replies: 13
Views: 2875

Re: questions about tidal forcing

It all depends on what you are planning to do. I plan to do multi-decadal simulations on the Northeast Pacific domain. I do not want to store the tidal boundary conditions on an hourly-basis, so will be using the tidal forcing file. If you are computing an estuary and only planning to run for a few...
by backkom
Wed Oct 22, 2008 12:34 pm
Forum: ROMS Usage
Topic: questions about tidal forcing
Replies: 13
Views: 2875

Re: questions about tidal forcing

Now, the reason why we provide a full 2D grid of the tides is for analysis, comparisons and detiding purposes. During detiding we need to check the original tidal fields to see if the least-squares fit :arrow: procedure is resolving all the frequencies over a particular time window. and arango,I do...
by backkom
Wed Oct 22, 2008 12:24 pm
Forum: ROMS Usage
Topic: questions about tidal forcing
Replies: 13
Views: 2875

Re: questions about tidal forcing

hi,arango and kate thanks for your suggestions! but i don not understand why not recommending to put the tidal forcing in the boundary file.for most applications the time interval between barotropic or baroclinic steps are several seconds or minutes,which are far less than the periods of tidal compo...
by backkom
Tue Oct 21, 2008 4:45 am
Forum: ROMS Usage
Topic: questions about tidal forcing
Replies: 13
Views: 2875

Re: questions about tidal forcing

kate,thanks for your reply!
by backkom
Sun Oct 19, 2008 10:43 am
Forum: ROMS Usage
Topic: questions about tidal forcing
Replies: 13
Views: 2875

Re: questions about tidal forcing

if i prescribe both harmonic constants in the forcing input file and also currents in the boundary file,for example,a inflow along the open boundary, my question is weather or not the boundary currents should be the combination of the tidal forcing and inflow currents? if so ,boundary currents and e...
by backkom
Sat Oct 18, 2008 1:39 am
Forum: ROMS Usage
Topic: questions about tidal forcing
Replies: 13
Views: 2875

Re: questions about tidal forcing

kate,thanks very much for your reply! i still have another question about input file.if the tidal forcing file is provided,then what should my boundary file look like? for exmaple,only one south open boundary with onther three close boundary,if i have the forcing file,then the south boundary is not ...
by backkom
Fri Oct 17, 2008 3:42 pm
Forum: ROMS Usage
Topic: questions about tidal forcing
Replies: 13
Views: 2875

questions about tidal forcing

Hi here i wanna to make a simple test case in which model is only forced by tidal.i have some basic questions about tidal forcing. i have read some posts about this,but i am still not sure about these. 1 .if the tidal forcing could be given in the boundary files? for example,my cases only has one so...
by backkom
Wed Oct 08, 2008 5:18 am
Forum: ROMS Tools and Techniques
Topic: Questions about processing package
Replies: 8
Views: 2974

Re: Questions about processing package

Thanks kate for your reply!
I wanna to generate all the input files for my own applications. I will try the tools you suggested.
thanks!
by backkom
Tue Oct 07, 2008 2:26 am
Forum: ROMS Tools and Techniques
Topic: Questions about processing package
Replies: 8
Views: 2974

Re: Questions about processing package

Thanks kate for your help!
i wanna to know which tools is convinent for the pre and post processing tasks for Roms .and the Matlab tools you mentioned is Roms_tools, is it right? or simply the CDL packages in trunk\Data\ROMS\CDL?

thanks !
by backkom
Mon Oct 06, 2008 2:24 pm
Forum: ROMS Tools and Techniques
Topic: Questions about processing package
Replies: 8
Views: 2974

Re: Questions about processing package

Since you could find file "Makefile.cray",it seems that you use an old roms version. Use Makefile.gfortran if you have this file,or change Makefile.ifort or Makefile.pgi for the gfortran compiler. Generally,The developers advise you to update to the newest version.The new version has a new makefile...
by backkom
Sun Oct 05, 2008 8:08 am
Forum: ROMS Tools and Techniques
Topic: Questions about processing package
Replies: 8
Views: 2974

Re: Questions about processing package

Since you could find file "Makefile.cray",it seems that you use an old roms version. Use Makefile.gfortran if you have this file,or change Makefile.ifort or Makefile.pgi for the gfortran compiler. Generally,The developers advise you to update to the newest version.The new version has a new makefile...
by backkom
Sat Oct 04, 2008 3:01 pm
Forum: ROMS Tools and Techniques
Topic: Questions about processing package
Replies: 8
Views: 2974

Questions about processing package

Hi, i am a newbie to roms and linux,here i have a doubt about the processing packages. i think the packages need to be compiled by make,is it right? there are many makefiles in the packages like Makefile.Cray,my configuration is as follows: os: fedora 9 cc: gcc fc: gfortran but i don't find the Make...
by backkom
Fri May 16, 2008 1:12 pm
Forum: ROMS Problems
Topic: help:Compiling error
Replies: 3
Views: 1184

thanks to kate for your reply ! i guess i have found why the trouble occurs. i made a simple mistake that i download the roms on a windows system while compiling it on a linux system.the line ending difference between two systems perhaps leads to the error. now when i download and compile the roms o...
by backkom
Thu May 15, 2008 1:39 pm
Forum: ROMS Problems
Topic: help:Compiling error
Replies: 3
Views: 1184

help:Compiling error

i am on a SGI workstation,The SGI workstation's Operating System is SUSE 9.0 which hasn't installed subversion.It has included GNU make 3.8 and perl, v5.8.3 built for ia64-linux-thread-multi. i download roms source code with tortoiseSVN and the netcdf has been installed correctly ,but while compilin...