Ocean Modeling Discussion

I used the old executable file OCEANG which was compiled by using the old ROMS codes before, it works.

error while reading variable: wind_time at TIME index = 0 After I update the ROMS code, I got error inforamtion as belows: Found Error: ** Line: 2240 Source: ROMS/Modules/mod_netcdf.F, netcdf_get_fvar NETCDF_GET_FVAR_0D - error while reading variable: wind_time in input file: data/roms_frc.nc call ...

Here's "ncdump -h" on a working rivers file: netcdf NGOA_rivers_1980_2014_fe10 { ... // global attributes: :type = "ROMS RIVERS file" ; :title = "hydroflow" ; :source = "David Hill and Jordan Beamer" ; :history = "Mon Feb 20 16:29:40 2017: ncks -A BGC_river.nc NGOA_rivers_1980_2014.nc" ; :NCO = "4 ...

Roms can run sucessfully when I do not turn on "LuvSrc " and "LtracerSrc ". But I got a error "insufficient virtual memory" when I set "LuvSrc " and "LtracerSrc " were ture. You probably have something misconfigured in your river source file, so you should check that it follows the correct netcdf ...

Roms can run sucessfully when I do not turn on "LuvSrc " and "LtracerSrc ". But I got a error "insufficient virtual memory" when I set "LuvSrc " and "LtracerSrc " were ture. forrtl: severe (41): insufficient virtual memory Image PC Routine Line Source oceanG 00000000023BC098 mod_sources_mp_al 133 ...

Lm == 199 ! Number of I-direction INTERIOR RHO-points Mm == 215 ! Number of J-direction INTERIOR RHO-points This is not what I would consider to be a large domain, probably not your problem. thanks for ur reply. i run it on a super computer. It should be fine to ask for 552 processes. In order to ...

insufficient virtual memory The problem is that you don't have enough memory to run the domain you specify in the ocean.in file. What did you set Lm, Mm and N to? How about the number of tracers? Any idea how much memory you have on your system? thanks a lot for ur reply. Lm == 199 ! Number of I ...

I can compile roms well, but i got "forrtl: severe (41): insufficient virtual memory" when i run it. Node # 85 (pid= 14271) is active. forrtl: severe (41): insufficient virtual memory Image PC Routine Line Source oceanG 000000000219A9B4 mod_sources_mp_al 133 mod_sources.f90 oceanG 0000000001EB9B7D ...

cae wrote:Hi. In my experience, a blow-up like this usually results from a physical circulation problem and not from the ecosystem model.

the parameters in frc files look normal. i gave them form climate data (monthly averaged)

Hi. In my experience, a blow-up like this usually results from a physical circulation problem and not from the ecosystem model. Have you configured this model without the biogeochemistry and ensured that it runs? Also, with only 327 time-steps until a problem, you may be able to output the model ...

Hi, i am runing npzd. In my study area,alkalinity,NH4,LdetritusN,SDeN,LdetritusC,TIC data is absent. I can not find any other reanalysis data or simulation data from internet. So,I used a constent value for all grids and used as my boundary condition. the same value for all time series (12 months ...

Thank you very much for the replies Kate and Wilkin. Kate, there is no land mask on the biological initial fields, I'm working on this. Wilkin, I don't know why this is happening. I used to run my experiments in another machine, using MPI, and the minimum grid-spacing was fine. Now, im using OpenMP ...

parameters in restart file"rst.nc" look normal. paramters in bry.nc "boundary condition files" look normal except NH4 is a constant . it is only one effective value in my region (the region is too small), and this value was obtained from coads data. acutally, i set the value of TIC,alkalinity by ...

kate wrote:Your surface heat flux looks bizarre to the south there.

here is dQdSST,"latent",lward,pair,sensible,shflux,sst in forcing file, roms_frc.nc

Your surface heat flux looks bizarre to the south there. i did my best to figure out why latent,sensible,and shlux is so wield in history file "roms_his.nc" (results were attached below). however, I have no clue. "lwrad" seems ok in history file(roms_his.nc). I go back to check the forcing file ...

You had said you were applying the stresses from COADS, but yet the model is reading winds, air pressure and the rest. This looks odd: in that all the winds are negative. I would ask the model to write out surface fluxes and stresses to see if those look reasonable. I would try a much shorter ...

I found the min and max value of free surface,u-momentum component is zero. would that cold be a problem? the study area is 105-118E;17-24N. should I use the woa or coads data to compute the free surface in the initial file. NLM: GET_STATE - Read state initial conditions, 0001-01-01 00:00:00.00 ...

Perhaps you should show us the ROMS output where it is reading all these files. It gives the min and max of everything, so that we can see if they are all sensible. If you are getting NaNs, that's from the model physics, not the ecosystem stuff. Thank you so much for your reply. the information is ...

for Sea surface temperature and salinity in forcing files were computed by using the coads dataset (coads05) ,but the salinity and temperature in the boundary files were computed by using woapisces dataset. Would that be a problem?

Hi, everyone, I run ROMS and got the empty results (the NaN was shown in the first step and was attached below). I used Woapisces (have been provided by Olivier Aumont. These data have been computed by a coupled NEMO-PISCES global model) to compute the initial and boundary conditions of NO3 and O2 ...