[MITgcm-support] Lev spacing and bottom depth

Thu Jan 15 13:07:26 EST 2015

Hi Marco,

there shouldn’t be any problem and you should be fine.

M.
On Jan 15, 2015, at 6:17 PM, Marco Reale <reale.marco82 at gmail.com> wrote:

> hi martin and thank for your prompt reply,
> 
> yes my bathymetry H in some points (only in a few) equals the sum of my delR.
> 
> may this affect the numerical outputs if I ask the model the velocity fields in my last level?
> 
> cheers
> 
> marco 
> 
> 
> Il giovedì 15 gennaio 2015, <mitgcm-support-request at mitgcm.org> ha scritto:
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>    1. Re: how to do the adjoint using MITgcm (=?utf-8?B?TWlrZQ==?=)
>    2. Lev spacing and bottom depth (marco reale)
>    3. Re: how to do the adjoint using MITgcm (Patrick Heimbach)
>    4. Re: Lev spacing and bottom depth (Martin Losch)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Thu, 15 Jan 2015 21:30:12 +0800
> From: "=?utf-8?B?TWlrZQ==?=" <717613378 at qq.com>
> To: "=?utf-8?B?bWl0Z2NtLXN1cHBvcnQ=?=" <mitgcm-support at mitgcm.org>
> Subject: Re: [MITgcm-support] how to do the adjoint using MITgcm
> Message-ID: <tencent_2CA93E597F257CA45FB78739 at qq.com>
> Content-Type: text/plain; charset="utf-8"
> 
> Hello,Patrick Heimbach?
> Thanks for your replay. Now I am trying to install the OpenAD. At the same time, I am reading the manual of MITgcm to find some examples in which the adjoint model of MITgcm is built using the OpenAD. However, I can not find a simple and appropriate ?example in the directory of 'verification?'. Maybe I am too clumsy.
> I am interested in? the adjoint model of MITgcm and just a beginner. Could you give me a sample example that could be compiled and run using OpenAD and a file including the summary of steps.????
> Thank you so much
> 
> 
> best wishes ??
> 
> 
> Mike
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> ------------------------------
> 
> Message: 2
> Date: Thu, 15 Jan 2015 16:50:39 +0100
> From: marco reale <reale.marco82 at gmail.com>
> To: mitgcm-support at mitgcm.org
> Subject: [MITgcm-support] Lev spacing and bottom depth
> Message-ID: <E2538793-605D-4C1F-8184-3809CAC7FAF4 at gmail.com>
> Content-Type: text/plain; charset=utf-8
> 
> Dear MITGCM users
> 
> I?m running some simulations in a complex domain: I?m asking myself what happens to numerical output if my last level coincides with the deepest point of my bathymetry? I have no slip_bottom=.false. on the bottom ,  hfacmin=0.2 and bottom drag quadratic
> 
> cheers
> 
> Marco
> 
> 
> 
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Thu, 15 Jan 2015 16:20:12 +0000
> From: Patrick Heimbach <heimbach at mit.edu>
> To: "mitgcm-support at mitgcm.org" <mitgcm-support at mitgcm.org>
> Subject: Re: [MITgcm-support] how to do the adjoint using MITgcm
> Message-ID: <CACF19EA-715C-4648-A45E-F3B0E3D2B9F6 at mit.edu>
> Content-Type: text/plain; charset="utf-8"
> 
> Sorry, Mike, I don?t understand your question.
> In your initial email you referred to the example tutorial_global_ocean_optim
> which *is* a sub-directory of the verification/ directory.
> So you must have found it in the past.
> 
> In my previous email, I provided an example that works with the tutorial you referred to,
> and it works with the open-source tool OpenAD.
> Instead of using testreport, you can do the build ?by hand? as follows:
> cd verification/tutorial_global_ocean_optim/build/
> ../../../tools/genmake -oad -mods -mods ../code_oad/
> make adAll
> 
> More documentation on the specific tutorial is in section 3.18 of the online manual, see
> http://mitgcm.org/public/r2_manual/latest/online_documents/node160.html
> (unfortunately that description so far only described the build process using TAF; using OpenAD you should follow my previous instructions).
> 
> More on getting started with the model (e.g., directory structure and such) is in
> http://mitgcm.org/public/r2_manual/latest/online_documents/node88.html
> 
> p.
> 
> 
> 
> On Jan 15, 2015, at 8:30 AM, Mike <717613378 at qq.com> wrote:
> 
> > Hello,Patrick Heimbach
> > Thanks for your replay. Now I am trying to install the OpenAD. At the same time, I am reading the manual of MITgcm to find some examples in which the adjoint model of MITgcm is built using the OpenAD. However, I can not find a simple and appropriate example in the directory of 'verification'. Maybe I am too clumsy.
> > I am interested in the adjoint model of MITgcm and just a beginner. Could you give me a sample example that could be compiled and run using OpenAD and a file including the summary of steps.
> > Thank you so much
> >
> > best wishes ?
> >
> > Mike
> > _______________________________________________
> > MITgcm-support mailing list
> > MITgcm-support at mitgcm.org
> > http://mitgcm.org/mailman/listinfo/mitgcm-support
> 
> 
> ---
> Patrick Heimbach | heimbach at mit.edu | http://www.mit.edu/~heimbach
> MIT | EAPS 54-1420 | 77 Massachusetts Ave | Cambridge MA 02139 USA
> FON +1-617-253-5259 | FAX +1-617-253-4464 | SKYPE patrick.heimbach
> 
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> ------------------------------
> 
> Message: 4
> Date: Thu, 15 Jan 2015 17:25:06 +0100
> From: Martin Losch <Martin.Losch at awi.de>
> To: MITgcm Support <mitgcm-support at mitgcm.org>
> Subject: Re: [MITgcm-support] Lev spacing and bottom depth
> Message-ID: <16874F5E-E259-402F-A314-BA86E6B7A9C2 at awi.de>
> Content-Type: text/plain; charset="windows-1252"
> 
> Hi Marco,
> 
> not sure if this is what you mean: your bathymetry H in some points equals the sum of your delR?
> 
> The model assumes ?solid ground? below the domain, so that a topography/bathymetry can co-incides with the bottom of the domain. If you don?t specify any bathymetry, then the model assumes that the bottom of the domain is the (solid) sea floor. The boundary condtions are the same for this case, but their implementation is different from boundaries inside the domain because we now have to deal with a value at Nr+1 which does not exist in the arrays.
> 
> Martin
> On Jan 15, 2015, at 4:50 PM, marco reale <reale.marco82 at gmail.com> wrote:
> 
> > Dear MITGCM users
> >
> > I?m running some simulations in a complex domain: I?m asking myself what happens to numerical output if my last level coincides with the deepest point of my bathymetry? I have no slip_bottom=.false. on the bottom ,  hfacmin=0.2 and bottom drag quadratic
> >
> > cheers
> >
> > Marco
> >
> >
> >
> > _______________________________________________
> > MITgcm-support mailing list
> > MITgcm-support at mitgcm.org
> > http://mitgcm.org/mailman/listinfo/mitgcm-support
> 
> 
> 
> 
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> End of MITgcm-support Digest, Vol 139, Issue 15
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> 
> -- 
> Reale Marco
> University of Salento
> Italian Geophysical Association
> Italian Meteorological Society
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