Search found 20 matches

by CeeCee.X
Tue Feb 17, 2015 11:20 pm
Forum: ROMS Sediment
Topic: Segmentation fault once reads in boundary files (zeta,uvbar)
Replies: 1
Views: 1740

Segmentation fault once reads in boundary files (zeta,uvbar)

Hi, All, I was wondering if anyone could give me some suggestions on experiencing segmentation fault when reads in bry.nc. The boundary conditions I used is for applying zeta and ubar/vbar at South,North,East boundaries. My idealized rectangular domain is closed at west. I'm using the Chapman/Flathe...
by CeeCee.X
Tue Jan 13, 2015 7:04 pm
Forum: ROMS Discussion
Topic: About imposing Holland Model in ROMS on an idealized domain
Replies: 1
Views: 1234

About imposing Holland Model in ROMS on an idealized domain

Hi, I was wondering if anyone has the experience of imposing Holland wind field in ROMS. I have an idealized rectangular domain (250 km * 350 km, resolution = 2km) with tidal forcing propagating in from the east boundary and west boundary closed. I created a forcing netcdf file using Holland model a...
by CeeCee.X
Mon Oct 06, 2014 7:40 pm
Forum: Job Opportunities
Topic: Ocean Modeler at NOAA/ERT
Replies: 1
Views: 2074

Re: Ocean Modeler at NOAA/ERT

Hi, I was wondering if the Ocean Modeler position is still open? I didn't find any NOAA/ERT related jobs through the provided linkage. Has that already been filled?

Thanks and please let me know.
by CeeCee.X
Wed Sep 17, 2014 8:17 pm
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Re: Analytical Tide defined in O.B.C. in COAWSTv3.1

Good to know all of these. Thanks a lot, Kate. I masked some cells that blowing up to be dry and now it works fine. I am also trying to make a new grid just as you said making a transition from the shallow to deep. But what I have found that is the cell during this transition portion is very weird, ...
by CeeCee.X
Mon Sep 15, 2014 7:21 pm
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Re: Analytical Tide defined in O.B.C. in COAWSTv3.1

Hi, I have tried with BODYFORCE, but there is no much improvement. The model still blows up either at western boundary or at the junction between shallow and deep water, due to the speed trouble. Now I am testing svstr = 0.5N/m^2. And the current velocity along y_rho direction often gets into a very...
by CeeCee.X
Fri Sep 12, 2014 5:12 pm
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Re: Analytical Tide defined in O.B.C. in COAWSTv3.1

I got you. Thank you, Kate. Let me play with it and see how thing's going.
by CeeCee.X
Fri Sep 12, 2014 3:20 pm
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Re: Analytical Tide defined in O.B.C. in COAWSTv3.1

And now I am trying BODYFORCE. In order to do that, I was wondering if the following steps are correct: 1) define BODYFORCE in cpp option 2) Set LEVSFRC = 8 in ocean.in Besides these two steps, I was wondering if I need to generate a new netcdf file for the wind? Also, I was confused about the index...
by CeeCee.X
Fri Sep 12, 2014 2:26 pm
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Re: Analytical Tide defined in O.B.C. in COAWSTv3.1

zeta along the west boundary is no more than 1.6e-04 m. What happened is the V-component is too high (over 35 m/s) along the west boundary. If Coriolis effect is not considered. Everything went fine. However, if f is not zero, the cell gets blow up.
by CeeCee.X
Thu Sep 11, 2014 7:13 pm
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Re: Analytical Tide defined in O.B.C. in COAWSTv3.1

Hi, Kate, Here I attached my ideal study domain. The point(1,1,8) is located at boundary of the shallow water. But I was wondering if grid cell (1,1) is ghost cell or not? Basically when I create the domain, I didn't mask any cells dry because it is a simple test for an assumption in our real case s...
by CeeCee.X
Wed Sep 10, 2014 12:59 am
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Re: Analytical Tide defined in O.B.C. in COAWSTv3.1

Thank you, Kate. I adjusted svstr(i,j)=0.1_r8, however, it only lasted 2 steps more. STEP Day HH:MM:SS KINETIC_ENRG POTEN_ENRG TOTAL_ENRG NET_VOLUME C => (i,j,k) Cu Cv Cw Max Speed 0 0 00:00:00 0.000000E+00 4.861661E+03 4.861661E+03 6.219716E+13 (000,000,0) 0.000000E+00 0.000000E+00 0.000000E+00 0.0...
by CeeCee.X
Tue Sep 09, 2014 11:57 pm
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Re: Analytical Tide defined in O.B.C. in COAWSTv3.1

Hi, Dear All, During my simulation, I encountered a new problem when trying to add constant winds through analytical function in ROMS. I ran my simulations for five days with 1 min time step, however, after I define svstr=10 in the enana_smflux.h, I encountered such problem: NL ROMS/TOMS: started ti...
by CeeCee.X
Mon Sep 08, 2014 4:22 pm
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Re: Analytical Tide defined in O.B.C. in COAWSTv3.1

Thank you, Dr.John.Now it works. I have two additional question related to this ideal simulation: I found a header file named as ana_m2obc.h, which looks to me that it also deals with O.B.C. Since in my test case, the M2 component is imposed on the EAST boundary, I thought it is necessary to call th...
by CeeCee.X
Fri Sep 05, 2014 9:35 pm
Forum: ROMS Discussion
Topic: Analytical Tide defined in O.B.C. in COAWSTv3.1
Replies: 22
Views: 4803

Analytical Tide defined in O.B.C. in COAWSTv3.1

Hi,All, I am now using the COAWST v3.1. I tried to input an analytical M2 tide through the east open boundary conditions for an ideal test case. My domain is rectangular. What I did is add the following sentence into ana_fsobc.h and ana_m2obc.h: # elif defined IDEAL fac=1.0_r8 ! zeta0 omega=2.0_r8*p...
by CeeCee.X
Thu Aug 21, 2014 10:01 pm
Forum: ROMS Problems
Topic: ROMS blew up with OOST defined
Replies: 9
Views: 2333

Re: ROMS blew up with OOST defined

Thanks, John. Since I am not specifying OUTPUT in swan.in, only results from last time step is expected. If SWAN blows up in the middle, unlike in ROMS where the last time step can be saved in rst.nc, nothing can be printed out ?
by CeeCee.X
Thu Aug 21, 2014 8:47 pm
Forum: ROMS Problems
Topic: ROMS blew up with OOST defined
Replies: 9
Views: 2333

Re: ROMS blew up with OOST defined

I see. I actually have another simulation with ROMS and SWAN coupled. I used the following sentence, but nothing been generated from SWAN. BLOCK 'COMPGRID' NOHEADER 'rtp.mat' LAY 4 RTP 1. BLOCK 'COMPGRID' NOHEADER 'depth.mat' LAY 4 DEPTH 1. BLOCK 'COMPGRID' NOHEADER 'vel.mat' LAY 4 VEL 1. BLOCK 'COM...
by CeeCee.X
Thu Aug 21, 2014 8:07 pm
Forum: ROMS Problems
Topic: ROMS blew up with OOST defined
Replies: 9
Views: 2333

Re: ROMS blew up with OOST defined

Hi, did anyone encounter issue with opening the .mat files generated by SWAN during the ROMS-SWAN coupling process? I used the following script in swan.in BLOCK 'COMPGRID' NOHEADER 'rtp.mat' LAY 4 RTP 1. OUTPUT 20110822.000000 30 SEC BLOCK 'COMPGRID' NOHEADER 'depth.mat' LAY 4 DEPTH 1. OUTPUT 201108...
by CeeCee.X
Thu Jul 17, 2014 8:25 pm
Forum: ROMS Problems
Topic: ROMS blew up with OOST defined
Replies: 9
Views: 2333

Re: ROMS blew up with OOST defined

Thank you. Let me check the wave length and wave peak from ROMS first.
by CeeCee.X
Thu Jul 17, 2014 6:49 pm
Forum: ROMS Problems
Topic: ROMS blew up with OOST defined
Replies: 9
Views: 2333

Re: ROMS blew up with OOST defined

Thanks, John. I looked into the code, and found the basic differences did exist in whether Pwave_top are needed or not. However, the Pwave_top is provided by the SWAN. In the ROMS code, there are two places when Pwave shows up besides the Bulk_flux.f90 and they are either import the value from SWAN ...
by CeeCee.X
Thu Jul 17, 2014 4:42 pm
Forum: ROMS Problems
Topic: ROMS blew up with OOST defined
Replies: 9
Views: 2333

ROMS blew up with OOST defined

Dear all, I tried to use ROMS coupled with SWAN to simulate a real hurricane. My problem is by using Taylor and Yelland option to calculate the sea surface roughness, my simulation went all well. However, by using the OOST option, the simulation quickly blew up after running about 1 day. My time ste...