[MITgcm-support] ptracer and sponge (Daniel Goldberg)

Daniel Goldberg dngoldberg at gmail.com
Thu May 17 06:22:28 EDT 2018 

Thank you very much Chengyan!

Dan

On Thu, May 17, 2018 at 11:05 AM, whale <250107302 at qq.com> wrote:

> Dear Daniel
>
> I think you are right. The OBCS does not contain PTracer forcing. You need
> to employ RBCS to restore the PTracer.
> Cheers
>
> Chengyan
>
>
> ------------------ Original ------------------
> *From: * "mitgcm-support-request"<mitgcm-support-request at mitgcm.org>;
> *Date: * Thu, May 17, 2018 04:07 PM
> *To: * "mitgcm-support"<mitgcm-support at mitgcm.org>;
> *Subject: * MITgcm-support Digest, Vol 179, Issue 11
>
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> Today's Topics:
>
>    1. Output 2D slice from 3D simulation (Ruan Xiaozhou)
>    2. segmentation fault (Andreas Klocker)
>    3. ptracer and sponge (Daniel Goldberg)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 17 May 2018 03:35:13 +0000
> From: Ruan Xiaozhou <saberruan at hotmail.com>
> To: "mitgcm-support at mitgcm.org" <mitgcm-support at mitgcm.org>
> Subject: [MITgcm-support] Output 2D slice from 3D simulation
> Message-ID:
> <DM5PR12MB19295B811982B2861D2917E7A0910 at DM5PR12MB1929.
> namprd12.prod.outlook.com>
>
> Content-Type: text/plain; charset="utf-8"
>
> Dear MITgcm users,
>
> Hope this message finds you well. I have been trying to output 2D slice
> (YZ) data from a 3D simulation (because the 3D field is too large to be
> outputted at high frequency) but did not find proper locations in the
> diagnostics package. I?d really appreciate it if you could point me to the
> right directions.
>
> Best,
> Xiaozhou
> --
> Xiaozhou Ruan
> Division of Geological and Planetary Sciences
> California Institute of Technology
> MC 131-24
> Pasadena, CA  91125
>
> phone: +1 626-395-8715
> email: xiaozhour at caltech.edu<mailto:xiaozhour at caltech.edu>
> web:   http://www.its.caltech.edu/~xruan
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> ------------------------------
>
> Message: 2
> Date: Thu, 17 May 2018 16:27:33 +1000
> From: Andreas Klocker <andreas.klocker at utas.edu.au>
> To: "mitgcm-support at mitgcm.org" <mitgcm-support at mitgcm.org>
> Subject: [MITgcm-support] segmentation fault
> Message-ID: <d299752c-4dd1-1994-9894-2ccdf87e196b at utas.edu.au>
> Content-Type: text/plain; charset=UTF-8; format=flowed
>
> Hi guys,
>
> I've taken a working 1/24 degree nested simulation (of Drake Passage)
> with 42 vertical layers and tried to increase the vertical layers to 150
> (without changing anything else apart from obviously my boundary files
> for OBCS and recompiling with 150 vertical layers). Suddenly I get the
> following error message:
>
> forrtl: severe (174): SIGSEGV, segmentation fault occurred
> Image              PC                Routine Line        Source
> libirc.so          00002BA1704BC2C9  Unknown Unknown  Unknown
> libirc.so          00002BA1704BAB9E  Unknown Unknown  Unknown
> libifcore.so.5     00002BA1722B5F3F  Unknown Unknown  Unknown
> libifcore.so.5     00002BA17221DD7F  Unknown Unknown  Unknown
> libifcore.so.5     00002BA17222EF43  Unknown Unknown  Unknown
> libpthread.so.0    00002BA1733B27E0  Unknown Unknown  Unknown
> mitgcmuv_drake24_  00000000004E61BC  mom_calc_visc_ 3345  mom_calc_visc.f
> mitgcmuv_drake24_  0000000000415127  mom_vecinv_ 3453  mom_vecinv.f
> mitgcmuv_drake24_  0000000000601C33  dynamics_ 3426  dynamics.f
> mitgcmuv_drake24_  0000000000613C2B  forward_step_ 2229  forward_step.f
> mitgcmuv_drake24_  000000000064581E  main_do_loop_ 1886  main_do_loop.f
> mitgcmuv_drake24_  000000000065E500  the_main_loop_ 1904  the_main_loop.f
> mitgcmuv_drake24_  000000000065E6AE  the_model_main_ 2394  the_model_main.f
> mitgcmuv_drake24_  00000000005C6439  MAIN__ 3870  main.f
> mitgcmuv_drake24_  0000000000406776  Unknown Unknown  Unknown
> libc.so.6          00002BA1737E2D1D  Unknown Unknown  Unknown
> mitgcmuv_drake24_  0000000000406669  Unknown Unknown  Unknown
>
> First this error pointed to a line in mom_calc_visc.f on which
> calculations regarding the Leith viscosity are done. As a test I then
> used a Smagorinsky viscosity instead and now it crashes with the same
> error, but pointing to a line where Smagorinsky calculations are done. I
> assume I must be chasing a way more fundamental problem than one related
> to these two viscosity choices...but I'm not sure what this might be....
>
> Has anyone got any idea of what could be going wrong here?
>
> Thanks in advance!
>
> Andreas
>
>
>
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>
> ------------------------------
>
> Message: 3
> Date: Thu, 17 May 2018 09:07:26 +0100
> From: Daniel Goldberg <dngoldberg at gmail.com>
> To: MITgcm-support at mitgcm.org
> Subject: [MITgcm-support] ptracer and sponge
> Message-ID:
> <CAEhdavJ9PbX8SC-cM8RYJJEVODu6b71qNQLdDknDzZnRMeHTQg at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> Hello all
>
> >From what i can tell, the obcs sponge facility is not implemented for
> PTRACERS? I just want to make sure this is correct before i set up RBCS for
> a passive tracer.
>
> Many thanks
> Dan
>
> --
>
> Daniel Goldberg, PhD
> Lecturer in Glaciology
> School of Geosciences, University of Edinburgh
> Geography Building, Drummond Street, Edinburgh EH8 9XP
>
>
> em: D <dgoldber at mit.edu>dan.goldberg at ed.ac.uk
> web: https://www.geos.ed.ac.uk/homes/dgoldber
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-- 

Daniel Goldberg, PhD
Lecturer in Glaciology
School of Geosciences, University of Edinburgh
Geography Building, Drummond Street, Edinburgh EH8 9XP


em: D <dgoldber at mit.edu>dan.goldberg at ed.ac.uk
web: https://www.geos.ed.ac.uk/homes/dgoldber
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