Search found 23 matches
- Sat Jul 27, 2013 1:05 am
- Forum: ROMS Problems
- Topic: Instability in vertical advection
- Replies: 5
- Views: 5278
Re: Instability in vertical advection
Kate, I'd be very interested to know what solutions you come up with if you manage to pin it down, because I've grappled unsuccessfully with the same problem (I consider the extent to which I had to smooth my bathymetry/reduce my timestep to make it go away an unsuccessful fix). I had an especially ...
- Wed Jul 10, 2013 5:20 am
- Forum: ROMS Discussion
- Topic: Doubts about the ERA-Interim
- Replies: 4
- Views: 7999
Re: Doubts about the ERA-Interim
I thought about this problem a little bit more thoroughly, and it occurs to me that what is essentially a discontinuity every four steps (at least in my fields; it's very clear to me that 03-12 are cumulatively additive, as are 15-24) introduces a major problem when you try to do simple centered ave...
- Wed Jul 10, 2013 2:35 am
- Forum: ROMS Discussion
- Topic: Doubts about the ERA-Interim
- Replies: 4
- Views: 7999
Re: Doubts about the ERA-Interim
...good eye! Thanks! I think you're right; when I look at the forcing files generated with the conventional wisdom of these forums, my swrad (generated from ERA's ssr) and swflux (generated from ERA's e and tp) are clearly cumulatively additive through each set of four (00,03,06,09;12,15,18,21) 3-ho...
- Wed Jun 19, 2013 7:12 pm
- Forum: ROMS Discussion
- Topic: Marchesiello's RSUP3 in ROMS?
- Replies: 9
- Views: 7265
Marchesiello's RSUP3 in ROMS?
Hi everyone, Has Patrick Marchesiello (et al 2009)'s RSUP3 advection scheme to address spurious diapycnal mixing in sigma coordinate models been implemented in ROMS-Rutgers by anyone? The 2009 paper suggests it was going to be, but I don't see it in the latest release's cppdefs options or on the myr...
- Fri May 24, 2013 6:22 pm
- Forum: ROMS Discussion
- Topic: Surface heat retention, year-round fake "upwelling"
- Replies: 21
- Views: 24616
Re: Surface heat retention, year-round fake "upwelling"
Hi Hernan, If you have the time, I have a clarification question. It's pretty trivial, so apologies in advance. I am curious what cpp options you recommend for the shortwave radiation in an application that forces with ERA-interim. I like SOLAR_SOURCE in general, to estimate heat penetration w/expon...
- Mon May 20, 2013 9:29 pm
- Forum: ROMS Discussion
- Topic: Surface heat retention, year-round fake "upwelling"
- Replies: 21
- Views: 24616
Re: Surface heat retention, year-round fake "upwelling"
This is extremely helpful, thank you!
As a note, it looks like the server for your recommended dataset is moving to
http://apps.ecmwf.int/datasets/data/interim_full_daily/ , so you may want to update your bookmark. ![Smile :)](./images/smilies/icon_smile.gif)
As a note, it looks like the server for your recommended dataset is moving to
![Arrow :arrow:](./images/smilies/icon_arrow.gif)
![Smile :)](./images/smilies/icon_smile.gif)
- Mon May 20, 2013 7:14 pm
- Forum: ROMS Discussion
- Topic: Surface heat retention, year-round fake "upwelling"
- Replies: 21
- Views: 24616
Surface heat retention, year-round fake "upwelling"
Hi everyone! I feel like I must be doing something fundamentally wrong in my application of ROMS to the northern California current at very high resolution. Since I'm pretty much self-taught from the forums, this does not come as a huge surprise to me, but it's definitely getting to be time to look ...
- Fri Jan 18, 2013 8:22 pm
- Forum: ROMS Discussion
- Topic: WRT_AVG when restarting
- Replies: 0
- Views: 1308
WRT_AVG when restarting
Hi everyone! I've run into an interesting problem: my ROMS run seems to be hanging, post-restart, on its first attempt to write a new timepoint into ocean_avg.nc (one model day after restarting). I think I've done everything normally; nrrec is -1, my ininame is my restart file, ldefout went to false...
- Wed Feb 15, 2012 12:43 am
- Forum: ROMS Problems
- Topic: Post-compilation problems with ROMS
- Replies: 6
- Views: 6472
Re: Post-compilation problems with ROMS
Yeah, I really enjoy not having to do so anymore -- especially since all this arose from the challenge of recompiling after editing BCs, since last time I'd checked that was still necessary (as BCs were stored in .h)!
Thanks again for the responses, you two.
I do appreciate your time.
Thanks again for the responses, you two.
![Smile :)](./images/smilies/icon_smile.gif)
- Mon Feb 13, 2012 9:19 pm
- Forum: ROMS Problems
- Topic: Post-compilation problems with ROMS
- Replies: 6
- Views: 6472
Re: Post-compilation problems with ROMS
Hi Kate -- thanks for the response. It actually occurred to me that I haven't updated my .in file in a long time; I know that a variety of things have changed, like how boundary conditions are now defined in .in instead of .h. So that's something to do, but I feel like it doesn't really explain the ...
- Mon Feb 13, 2012 7:54 pm
- Forum: ROMS Problems
- Topic: Post-compilation problems with ROMS
- Replies: 6
- Views: 6472
Post-compilation problems with ROMS
Hi all, I've successfully compiled and run ROMS many times, but have never encountered a problem like this. I hadn't recompiled in the last several releases; when I finally needed to, it took a little bit of troubleshooting, in that I needed to revert the Linux-ifort.mk back to an older version that...
- Thu Nov 17, 2011 5:37 am
- Forum: ROMS Problems
- Topic: Forcing file fun
- Replies: 9
- Views: 5956
Re: Forcing file fun
Investigating the bathymetry, the 0s were clearly set by the mask, possibly when processed by seagrid, which I used to generate my grid. I used these instructions, here, to make my bathymetry: (https://www.myroms.org/wiki/index.php/seagrid) and then afterwards used your smooth_bath.m to modify the o...
- Thu Nov 17, 2011 5:19 am
- Forum: ROMS Problems
- Topic: Forcing file fun
- Replies: 9
- Views: 5956
Re: Forcing file fun
Actually, I did it with some care, using your matlab scripts and the instructions on the wiki. But obviously, not carefully enough!
Thanks for the insight,
Liz
Thanks for the insight,
Liz
- Thu Nov 17, 2011 12:24 am
- Forum: ROMS Problems
- Topic: Forcing file fun
- Replies: 9
- Views: 5956
Re: Forcing file fun
I am reasonably confident in my forcing -- is there a way to tell whether ROMS is successfully interpolating from a coarser forcing grid onto the ROMS grid? As for CFL numbers, this is with the original 180s timestep. If I remember correctly, they need to be less than 0.5 or perhaps 0.25 depending o...
- Wed Nov 16, 2011 7:05 pm
- Forum: ROMS Problems
- Topic: Forcing file fun
- Replies: 9
- Views: 5956
Re: Forcing file fun
I turned off the diagnostic flags in my .h file and recompiled, then ran. Same blow-up at the second timestep (bear in mind that 3506880, on day 7306 since 01/01/1980, which is 01/02/2000, is the initial time): STEP Day HH:MM:SS KINETIC_ENRG POTEN_ENRG TOTAL_ENRG NET_VOLUME C => (i,j,k) Cu Cv Cw Max...
- Wed Nov 16, 2011 12:33 am
- Forum: ROMS Problems
- Topic: Forcing file fun
- Replies: 9
- Views: 5956
Re: Forcing file fun
Gotcha, thanks. I fixed it by creating the coordinates attribute directly inside NCL before writing it to a .nc file. Now I've finally got a model that runs... until it blows up on first timestep it tries to advance. :( The heart of the problem in the logfile is definitely: STEP Day HH:MM:SS KINETIC...
- Tue Nov 15, 2011 9:04 pm
- Forum: ROMS Problems
- Topic: Forcing file fun
- Replies: 9
- Views: 5956
Forcing file fun
I discovered that my forcing files were missing the 'coordinates = "lon lat"' attribute. I added it manually with NCO... I /think/ correctly, with, for example, ncatted -a coordinates,'lwrad_down',c,c,"lon lat" lwrad_down.ORG.2000.nc but something really weird pops up in the subs...
- Tue Nov 15, 2011 8:58 pm
- Forum: ROMS Tools and Techniques
- Topic: "READ_PHYPAR - could not find input file: ocean_ini.nc" err
- Replies: 4
- Views: 5558
Re: "READ_PHYPAR - could not find input file: ocean_ini.nc"
Nevermind, solved.
- Tue Nov 15, 2011 12:55 am
- Forum: ROMS Tools and Techniques
- Topic: "READ_PHYPAR - could not find input file: ocean_ini.nc" err
- Replies: 4
- Views: 5558
Re: "READ_PHYPAR - could not find input file: ocean_ini.nc"
I have a similar problem, only it looks like this: Input Grid File: ocean_grd.nc Input Nonlinear Initial File: ocean_ini.nc Input Forcing File 01: swrad.ORG.2000.nc READ_PHYPAR - could not find input file: With no file name after the colon! There are eight forcing files in all, one apiece for the va...
- Tue May 03, 2011 6:26 am
- Forum: ROMS Discussion
- Topic: Regridding of winds and their rotation within ROMS
- Replies: 16
- Views: 14667
Re: Regridding of winds and their rotation within ROMS
Interpolation it is, then. I think I will try to use the myriad MATLAB tools available through myroms.org - there are so many, and they're so well-documented, that I might as well take advantage. (To those of you who've developed them, thanks!) In the long term I'm planning on three one-way nested g...
- Mon May 02, 2011 10:39 pm
- Forum: ROMS Discussion
- Topic: Regridding of winds and their rotation within ROMS
- Replies: 16
- Views: 14667
Re: Regridding of winds and their rotation within ROMS
Thanks for the prompt reply! :) Before I go further, I guess I need to make sure -- does the lat/lon grid that ROMS expects have to be regular (in the 'evenly spaced lat/lon points' sense), thus requiring interpolation from the very irregular lat/lon grid in my dataset before I show it to ROMS at al...
- Mon May 02, 2011 8:57 pm
- Forum: ROMS Discussion
- Topic: Regridding of winds and their rotation within ROMS
- Replies: 16
- Views: 14667
Re: Regridding of winds and their rotation within ROMS
So, on the topic of regridding winds from NARR data... here's a question that has more to do with basic netCDF processing than ROMS-specifics. (Sorry for that.) I've noticed that all of my data files from NCEP's NARR have a time dimension, and then x and y dimensions -- longitude and latitude are st...
- Tue Apr 12, 2011 10:18 pm
- Forum: ROMS Problems
- Topic: seagrid2roms and matlab 2010b native matlab netcdf
- Replies: 7
- Views: 7236
Re: seagrid2roms and matlab 2010b native matlab netcdf
I had to solve this problem recently (admittedly with 2009b, not 2010, but the error is the same). As far as I could find, there seem to be two schools of thought in these forums for how to deal with this particular seagrid2roms issue: 1. Recognize that MATLAB has their own netcdf commands and rewri...