[MITgcm-support] Held-Suarez_MITgcm-support Digest, Vol 147, Issue 12

[Angela Zalucha]

Hi,

This error message usually indicates that the CFL condition has been 
violated.  If you are getting this message you should first try lowering 
your time step (deltaT).  I don't know about the exact configuration you 
are running, but I usually find I need deltaT=150, sometimes even as low 
as deltaT=50 for Mars.

You can check if CFL is being violated in the "MONITOR dynamic field 
statistics" by looking in the output text (you have it called 
presion.txt in your example) for the parameters:
advcfl_uvel_max
advcfl_vvel_max
advcfl_wvel_max

These should be below about 0.5 for numerical stability.

Please let me know if you require more assistance.

     Angela

On 09/27/2015 04:40 PM, guarneros at geofisica.unam.mx wrote:
> Hi,
>
> In the Data file I put the Lines 63 and 64:
>
>  delR=20*45,
>  Ro_SeaLevel=9.E2,
>
> The potential temperature that I put it was wrong, so that I'm getting 
> a new calculation of it. I ran the model with the original potential 
> temperature and the levels of pressure that I wrote before and I got 
> the next message:
>
> julio at julio-NE572:~/MITgcm/verification/Marte33/run$ ./mitgcmuv > 
> presion.txt
> STOP ABNORMAL END: S/R CALC_R_STAR
>
> The model I try to run it is a very simple model of the atmosphere of 
> Mars, I won't put a topo file.
>
>> Today's Topics:
>>
>>    1. Held and Suarez adaptation (guarneros at geofisica.unam.mx)
>>    2. Re: Held and Suarez adaptation (Angela Zalucha)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Wed, 23 Sep 2015 20:46:16 -0500
>> From: guarneros at geofisica.unam.mx
>> To: mitgcm-support at mitgcm.org
>> Subject: [MITgcm-support] Held and Suarez adaptation
>> Message-ID:
>>     <20150923204616.Horde.ApHSY2cx83a_ZsxhQ_yiSw1 at nundehui.geofisica.unam.mx> 
>>
>>
>> Content-Type: text/plain; charset=UTF-8; format=flowed; DelSp=Yes
>>
>> Hello, my name is Julio Guarneros, and I am using de MITgcm to do a
>> simple model of the atmospheric temperature of Mars. I'm using the
>> Held and Suarez experiment as a base, but I have a little problem with
>> the temperature and the atmospheric pressure. When I change the
>> potential temperature it don't seems to a big change, I tried to put
>> starTime=0., (Line 42 of Data file)but it didn't work.
>> The problem that I have with the atmospheric pressure is when I put
>> Ro_SeaLevel= 1.E3 (Line 64) and delR=20*5.E1 (Line 63 Data file)
>> because the model don't run, I can compile, generate the mitgcmuv file
>> but it just didn't work. I hope someone can help me tell me about my
>> mistake, in the user manual it says that the Held & Suarez experiment
>> can be used to model any atmosphere.
>>
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Wed, 23 Sep 2015 20:23:37 -0600
>> From: Angela Zalucha <azalucha at seti.org>
>> To: <mitgcm-support at mitgcm.org>
>> Subject: Re: [MITgcm-support] Held and Suarez adaptation
>> Message-ID: <56035EA9.4070203 at seti.org>
>> Content-Type: text/plain; charset="windows-1252"; format=flowed
>>
>> Hi,
>>
>> I developed a Mars version of the MIT GCM starting from the Held-Suarez
>> tutorial some years ago.  Could you provide the exact error message you
>> are getting when you execute the mitgcmuv file (cut and paste into email
>> or text file)?
>>
>>      Angela
>>
>> On 09/23/2015 07:46 PM, guarneros at geofisica.unam.mx wrote:
>>> Hello, my name is Julio Guarneros, and I am using de MITgcm to do a
>>> simple model of the atmospheric temperature of Mars. I'm using the
>>> Held and Suarez experiment as a base, but I have a little problem with
>>> the temperature and the atmospheric pressure. When I change the
>>> potential temperature it don't seems to a big change, I tried to put
>>> starTime=0., (Line 42 of Data file)but it didn't work.
>>> The problem that I have with the atmospheric pressure is when I put
>>> Ro_SeaLevel= 1.E3 (Line 64) and delR=20*5.E1 (Line 63 Data file)
>>> because the model don't run, I can compile, generate the mitgcmuv file
>>> but it just didn't work. I hope someone can help me tell me about my
>>> mistake, in the user manual it says that the Held & Suarez experiment
>>> can be used to model any atmosphere.
>>>
>>> _______________________________________________
>>> MITgcm-support mailing list
>>> MITgcm-support at mitgcm.org
>>> http://mitgcm.org/mailman/listinfo/mitgcm-support
>>
>> -- 
>> =^^==^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=
>> Angela Zalucha, Ph.D.
>> Principal Investigator
>> SETI Institute
>> +1 (617) 894-2937
>> http://www.seti.org/users/azalucha
>> =^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=
>>
>>
>>
>>
>> ------------------------------
>>
>> _______________________________________________
>> MITgcm-support mailing list
>> MITgcm-support at mitgcm.org
>> http://mitgcm.org/mailman/listinfo/mitgcm-support
>>
>>
>> End of MITgcm-support Digest, Vol 147, Issue 12
>> ***********************************************
>
>
>
> _______________________________________________
> MITgcm-support mailing list
> MITgcm-support at mitgcm.org
> http://mitgcm.org/mailman/listinfo/mitgcm-support

-- 
=^^==^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=
Angela Zalucha, Ph.D.
Principal Investigator
SETI Institute
+1 (617) 894-2937
http://www.seti.org/users/azalucha
=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=|=^^=