Child Boundary grid detected as Land when it is in the ocean

[Elisabet Cruz]

Hello everyone!!

I am running CMS with two grids generated from CROCO (new version of ROMS) with two-way nested domains, a Parent grid with a lower resolution and inside of that, there is the Child grid with a better resolution. For some reason, CMS detects my West boundary of the Child grid as land and the particles stop for running.

It only happens at the west boundary and the particles can leave the Child domain and go to the Parent domain but not the opposite.

Has anyone faced the same problem when running CMS in nested mode?

Thanks!!

Elisabet

[Juan Faundez]

Hi Elisabet

I ran time ago same configuration in CROCO, but didnt get that error. Did you transform the Arakawa grid outputs from C to A?

best

--
You received this message because you are subscribed to the Google Groups "connectivity-modeling-system-club" group.
To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/connectivity-modeling-system-club/cddd12bc-bb5c-4791-8efc-c358665a6ba8%40googlegroups.com.

[Elisabet Cruz]

Hi!!

Thank you so much for your answer!!

Yes, I made some horizontal cuts to transform from sigma to z-coordinates and also transform from C to A grid, my parent grid has a resolution of 1/50 and my child grid 1/150.

I dont know it is some problem with differences in velocities fields of parent and child grid...I am checking all the possibilities, but maybe someone had a similar problem and know how to solve it or what is the error.

Thanks

On Tuesday, June 2, 2020 at 1:02:01 AM UTC+1, Juan Faundez wrote:

Hi Elisabet

I ran time ago same configuration in CROCO, but didnt get that error. Did you transform the Arakawa grid outputs from C to A?

best

On Mon, Jun 1, 2020 at 7:46 PM Elisabet Cruz <elisab...@gmail.com> wrote:

Hello everyone!!

I am running CMS with two grids generated from CROCO (new version of ROMS) with two-way nested domains, a Parent grid with a lower resolution and inside of that, there is the Child grid with a better resolution. For some reason, CMS detects my West boundary of the Child grid as land and the particles stop for running.

It only happens at the west boundary and the particles can leave the Child domain and go to the Parent domain but not the opposite.

Has anyone faced the same problem when running CMS in nested mode?

Thanks!!

Elisabet

--
You received this message because you are subscribed to the Google Groups "connectivity-modeling-system-club" group.

To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-system-club+unsubscribe@googlegroups.com.

[Juan Faundez]

Hi Elisabet

I think will be more clear the problem if you send your configuration file for CMS, with that we could compare some difference

best 

On Mon, Jun 1, 2020 at 8:09 PM Elisabet Cruz <elisab...@gmail.com> wrote:

Hi!!

Thank you so much for your answer!!

Yes, I made some horizontal cuts to transform from sigma to z-coordinates and also transform from C to A grid, my parent grid has a resolution of 1/50 and my child grid 1/150.

I dont know it is some problem with differences in velocities fields of parent and child grid...I am checking all the possibilities, but maybe someone had a similar problem and know how to solve it or what is the error.

Thanks

On Tuesday, June 2, 2020 at 1:02:01 AM UTC+1, Juan Faundez wrote:

Hi Elisabet

I ran time ago same configuration in CROCO, but didnt get that error. Did you transform the Arakawa grid outputs from C to A?

best

On Mon, Jun 1, 2020 at 7:46 PM Elisabet Cruz <elisab...@gmail.com> wrote:

Hello everyone!!

I am running CMS with two grids generated from CROCO (new version of ROMS) with two-way nested domains, a Parent grid with a lower resolution and inside of that, there is the Child grid with a better resolution. For some reason, CMS detects my West boundary of the Child grid as land and the particles stop for running.

It only happens at the west boundary and the particles can leave the Child domain and go to the Parent domain but not the opposite.

Has anyone faced the same problem when running CMS in nested mode?

Thanks!!

Elisabet

--
You received this message because you are subscribed to the Google Groups "connectivity-modeling-system-club" group.

To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/connectivity-modeling-system-club/cddd12bc-bb5c-4791-8efc-c358665a6ba8%40googlegroups.com.

--

You received this message because you are subscribed to the Google Groups "connectivity-modeling-system-club" group.

To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/connectivity-modeling-system-club/b598cf28-df23-47ad-b467-5e947749c113%40googlegroups.com.

[Elisabet Cruz]

Hi!

Here are my configuration files for CMS.

I also tried defining the turbulence mode but the result was the same

Thank you

On Tuesday, June 2, 2020 at 1:28:23 AM UTC+1, Juan Faundez wrote:

Hi Elisabet

I think will be more clear the problem if you send your configuration file for CMS, with that we could compare some difference

best 

On Mon, Jun 1, 2020 at 8:09 PM Elisabet Cruz <elisab...@gmail.com> wrote:

Hi!!

Thank you so much for your answer!!

Yes, I made some horizontal cuts to transform from sigma to z-coordinates and also transform from C to A grid, my parent grid has a resolution of 1/50 and my child grid 1/150.

I dont know it is some problem with differences in velocities fields of parent and child grid...I am checking all the possibilities, but maybe someone had a similar problem and know how to solve it or what is the error.

Thanks

On Tuesday, June 2, 2020 at 1:02:01 AM UTC+1, Juan Faundez wrote:

Hi Elisabet

I ran time ago same configuration in CROCO, but didnt get that error. Did you transform the Arakawa grid outputs from C to A?

best

On Mon, Jun 1, 2020 at 7:46 PM Elisabet Cruz <elisab...@gmail.com> wrote:

Hello everyone!!

I am running CMS with two grids generated from CROCO (new version of ROMS) with two-way nested domains, a Parent grid with a lower resolution and inside of that, there is the Child grid with a better resolution. For some reason, CMS detects my West boundary of the Child grid as land and the particles stop for running.

It only happens at the west boundary and the particles can leave the Child domain and go to the Parent domain but not the opposite.

Has anyone faced the same problem when running CMS in nested mode?

Thanks!!

Elisabet

--
You received this message because you are subscribed to the Google Groups "connectivity-modeling-system-club" group.

To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-system-club+unsubscribe@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/connectivity-modeling-system-club/cddd12bc-bb5c-4791-8efc-c358665a6ba8%40googlegroups.com.

--
You received this message because you are subscribed to the Google Groups "connectivity-modeling-system-club" group.

To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-system-club+unsubscribe@googlegroups.com.

[Juan Faundez]

Hi Elisabet

the only differences which I noted was in the nest_# files,  in the ystart and yend. My value in ystart is closer to the pole and yend closer to the equator, i think yours are the inverse. 

also you should change wvel_positive_direction = "positive" by "upward".

I hope it could be useful

best

To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/connectivity-modeling-system-club/cddd12bc-bb5c-4791-8efc-c358665a6ba8%40googlegroups.com.

--
You received this message because you are subscribed to the Google Groups "connectivity-modeling-system-club" group.

To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-...@googlegroups.com.

To view this discussion on the web visit https://groups.google.com/d/msgid/connectivity-modeling-system-club/b598cf28-df23-47ad-b467-5e947749c113%40googlegroups.com.

--

You received this message because you are subscribed to the Google Groups "connectivity-modeling-system-club" group.

To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/connectivity-modeling-system-club/40c08230-9632-42ee-9e9b-3c4870532540%40googlegroups.com.

[Elisabet Cruz]

Hi Juan,

thank you so much for trying to help me.

Finally, I discover my error, it was when I transformed from C to A grid. This transformation created NaN values at the boundaries of my Child grid, because of the transformation from u and v velocities points to rho points. It was making that CMS detected the boundaries of my Child grid as cost sometimes (exitcode -2) and other times it gave the exitcode -1.

Maybe it can help is someone face the same problem.

Best,

Elisabet

[Claire Paris]

Hi Elisabet,

It maybe that the parent and child models on the western boundary are not completely meshed/nested.  Does this happen when you release the particles at the surface? 

Claire B. Paris

Sent from iPhone - apologies for typos

Le 1 juin 2020 à 20:09, Elisabet Cruz <elisab...@gmail.com> a écrit :



To unsubscribe from this group and stop receiving emails from it, send an email to connectivity-modeling-...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/connectivity-modeling-system-club/b598cf28-df23-47ad-b467-5e947749c113%40googlegroups.com.

[Elisabet Cruz]

Hi Claire,

I am using oceanographic output from CROCO with two-way nested domains. I released the particles at 5 m depth.

The problem was when I transformed from C-grid to A-grid. The transformation of meridional and zonal velocity components from their positions in each (little) grid to the rho-points (center of each (little) grids) generates NaN values in the previous position of u and v components along the boundaries of my domain, so when CMS try to pass the particles from Child to Parent domains or vice-versa, it didn't found data at the boundaries of Child domain and CMS stop from running.

I have already solved this issue and now CMS is running without problems

Elisabet