Ocean Modeling Discussion

Thank you very much Kate. So now if my model resolution is 14km then the sponge can be a multiple of 14 so it will be good to give a value as 84 km right? Whether it is dependent or independent of regions and domain?

Hello to all,

Can anyone tell me in ROMS 3.7 version how (on the basis of which criteria) and where we can define the sponge width?
From previous forum discussion topics I got that it is defined on the resolution. If yes then what should be the preferred ratio between model resolution and sponge ...

Dear ROMS Users,

I am running ROMS with a nested domain and when I am trying to restart this, I am getting an error message - PUT_REFINE2D - unbounded contact points temporal: interpolation:
cr = 01 dg = 01 ng = 02
iic(dg) = 0215137 told = 1 tnew = 2
iic(ng) = 1727137 Wold = ******** Wnew ...

Thank you very much Wilkin .

Dear all,

I want to understand what is the correct way to convert the MERRA latent heat flux conversion into evaporation flux(E=H/Lv). finally to calculate evaporation(kg/m^2/sec)-precipitation(kg/m^2/sec)=swflux(cm/day)


With Regards-
Tara

Dear Kate,

Thank you very much for your reply,
In my case the distribution is

level S-coord Cs-curve Z at hmin at hc half way at hmax

40 0.0000000 0.0000000 0.000 0.000 0.000 0.000
39 -0.0250000 -0.0000295 -0.234 -1.877 -3.577 -3.756
38 -0.0500000 -0.0001188 -0.469 -3.759 -7.281 -7.772
37 -0 ...

Hello all,
ROMS is a sigma co-ordinate model. So, it follows the bathymetry to distribute all levels. Whether all levels are equally spaced or there is any way to control the distances between the levels or their distribution. let say i defined the 40 levels vertical resolution, how these 40 level ...

Yes, kate I checked as per your clue but I have still 890 GB left in my output destination, I also tried by using different DT as well as different ntimes but nothing is resolving this issue. Is there any other mistake I am making.


Thanks & Regards--
Tara

Hello ROMS community,

I am getting one error but I am not able to understand what this error says. can anyone suggest the meaning of this kind error and the probable solution.

I am attaching the ncdump information of the error associated files as well as the log file too. Error is under mentioned ...

Thanks for your kind reply Kate,

I tried with your current suggestion, but I am not getting improvement in my results. As u remember in my previous setup I was getting cooling from the May to nov/oct. But I have run for 6 months, but the results are not upto the mark. Please see the attached figure ...

Thank You Very much Dear Ymamoutos,

I will try with your valuable suggestions but I have one doubt regarding OBC--,what I have choosen for my case is given below-

zeta-Flather
ubar- chapman Imp
vbar- chapman Imp

but I am little bit confused whether, as per your suggestion I need to alter the zeta ...

Thanks Kate,

I will try this suggestion and get back to u hopefully with good news.


With Regards--
Tara

Dear ROMS Users'
Can anyone suggest that whether the TS_SMAGORINSKY, UV_SMAGORINSKY both are using only TS_DIFF4 as well as UV_VIS4 only or it needs both harmonic as well as the biharmonic diffusion and viscosity coefficients. I am getting a problem of abnormal cooling in coastal regions, that is ...

Thanks kate for your kind reply. :)

As you suggested, I will check with CPP options(MIX_GEO_TS) 1st. I have already plotted the currents and the wind stress forcings too. But I am not able to find any hint for this issue. I am attaching the current plot for the same year. I have tried two ...

Dear ROMS Users,

I am facing a problem of abnormal cooling specially in the coastal region, to inquire about that, I have tried with different set of momentum forcings (daily as ell as 3 hourly)with all 4 side OBC those are relaxed to 3 days realistic observed boundary conditions.

Please suggest ...

Hello Roms Community,

Can anyone share the information about how to get the registered user id and password for downloading the source code of latest version of COAWST.

With Regards-
Tara

Dear Kate,

Thank you very much for the kind and immediate useful response.

With Best Regards-
Tara

Hello Roms Community,

I have doubt about the time index of the forcing files of multiple years say eg.(1998 to 2008).So, consider if my 1998 year file has daily information with time index (0, 364)and next file of year 1999 also have 0 to 364 days.The model when switch to the next year forcing file ...

We resolved this issue by adding attribute "_FillValue = 1.e+20;" to the uwind, vwind variables in forcings files. By default it was having missing_value attribute.
I just followed the same procedure for all my required forcings files.
Now model is working fine.

I got this _FillValue attribute ...

Dear Kate,

Thank you very much for your kind help.

Hello Kate,

I am very grateful for your instant reply, yes you are correct, my tropflux data that I am using for Tair, Qair and quikscat(Uwind,Vwind) data both are masked over land , and my doubt was also on these masked values present in land points. But I am surprise that if model is not dealing ...

Hello Roms community,

I am using the tropflux daily climatology data forcings (Tair,swrad, lwrad, Qair, Pair from coreV2) and GPCP data for rainfall rate and Uwind & Vwind from quikscat data. The current setup is a trial to run a 10 years climatological run for the domain [35E to 90E & 25S to 20N ...

Dear Kate,

I am very thankful for your quick and useful suggestions.

Dear Kate,

Thanks for the kind information and sorry for the late reply. But one more doubt I have regarding the name of the addition forcing files and I want to know whether I can keep any name of files or it should be decided by some specific rule to set the name of forcing files. If I am setting ...

Hello ROMS Community,

Can anyone tell how ROMS model is reading the input variables from the forcing files?
I am providing observed forcing files to the model and I want to know whether these files and their variable names are need to be defined in any place of model?

NFFILES == 9
FRCNAME ...

Can anyone suggest me how can I plot a crosssection of depth in meter Vs Longitude from Roms output for a fixed latitude and time point. How to manage sigma coordinate when we want a section of depth and longitude for a fixed latitude but in reality sigma coordinate is terrain following coordinate ...