[MITgcm-support] flt_example

[Dustin Carroll]

Hi Rahele,

1. See /MITgcm/verification/flt_example/input/read_flt_traj.m for an example of reading in the float output files using MATLAB.
2. flt_noise is the amplitude added or subtracted to the advection velocity by a white noise generator.
3. Use /MITgcm/verification/flt_example/extra/write_float.F to generate the float input files, then convert them to big endian using /MITgcm/verification/flt_example/input/convert_ini.m.

I haven’t looked at the float_profiles.meta files before, perhaps someone else can help with that.

Best,
Dustin

 
> On Aug 22, 2017, at 7:30 AM, Menemenlis, Dimitris (329C) <Dimitris.Menemenlis at jpl.nasa.gov> wrote:
> 
> I forward your question to MITGCM support.
> 
> Check that you are writing to MITGCM support list from the email that you used to register.
> 
> On Aug 22, 2017, at 1:46 AM, rahele shafiee <rahele_shafiee at yahoo.com <mailto:rahele_shafiee at yahoo.com>> wrote:
> 
>> HI   Dimitris  . 
>> I am a  MITgcm user. 
>> It's been a few days that I can not post messege to the site MITgcm.Thanks if you help me.
>> I'm running the “flt_example” test case in the MITgcm. I'm very confused and there is no explanation about this test case in the manule. I have some questions. Thanks for helping me.
>>  
>> 1- If  nsx=nsy=2 selected, four outputs are created (e.g. float_traject.data, floar_profiles.data , …). How can I get these outputs in a file and have an output  “profile” and an output “traject” . I used the following:
>> python gluemncbig -o a.data  float_profiles.001.0000*
>> But the following error was given:
>>   File "gluemncbig", line 1206, in <module>
>>     raise IOError('No files matching {0}', globpatt)
>> IOError: [Errno No files matching {0}] float_profiles.001.0000*
>> This command runs error-free for the NETCDF files.
>>  
>> 2- How to choose the parametric “flt_noise”?
>> 3- How to design an ” flt_file” input file for  my domain floats? Does this file determine the coordinates of the floats? This file is presented “flt_ini_pos.bin” in the  test case and there are 2539 record in it.
>>  
>> 4- In the outputs, the file float_profiles.meta  is presented as follows:
>> nDims = [   3 ];
>>  dimList = [
>>      1,    1,    1,
>>      1,    1,    1,
>>     41,    1,   41
>>  ];
>>  dataprec = [ 'float32' ];
>>  nrecords = [   141 ];
>>  timeStepNumber = [         18 ];
>>  
>> What does the number 41 and the 141  number of nrecords  mean?
>> And the file is presented as follows:
>> nDims = [   3 ];
>>  dimList = [
>>      1,    1,    1,
>>      1,    1,    1,
>>     13,    1,   13
>>  ];
>>  dataprec = [ 'float32' ];
>>  nrecords = [   421 ];
>>  timeStepNumber = [         18 ];
>> What does the number 13 and the 421  number of nrecords  mean?
>>  
>> I apologize for asking my questions. I'm really confused.
>> Thanks ����� 
>> 
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