[Ncep.list.fv3-announce] fv3 rstart

Fri Apr 14 23:41:23 UTC 2017

Moorthi,

When running with the NGGPS ICs, mountain=.false. is needed.  Otherwise as
you've found, the model will try to build it's own topography, when you
really want the topography from the orography maker.  It is for a restart
that mountain must be set to .true. so as to preserve the original
topography.

Rusty
--
Rusty Benson, PhD
Modeling Systems Group
NOAA Geophysical Fluid Dynamics Lab
Princeton, NJ

On Fri, Apr 14, 2017 at 7:33 PM, Shrinivas Moorthi - NOAA Federal <
shrinivas.moorthi at noaa.gov> wrote:

> Rusty,
>    I am a bit confused.  I have been running all this time with
> "mountain=.false."
> But now I set "mountain=.true." and my job crashed with
> "Rank 3 [Fri Apr 14 23:25:03 2017] [c5-0c2s12n0] application called
> MPI_Abort(MPI_COMM_WORLD, 1) - process 3
>
> FATAL from PE     0: surfdrv: surface file INPUT/topo1min.nc not found !"
>
> This is something new.  How am I to specify  orography?
> Or do I have to really set "mountain='false."?
> Thanks
> Moorthi
>
>
> On Fri, Apr 14, 2017 at 2:47 PM, Rusty Benson - NOAA Federal <
> rusty.benson at noaa.gov> wrote:
>
>> I'm copying this email trail to the mail list for everyone to benefit
>> regarding the changes for restart runs.  Let me know if anything is unclear.
>>
>> na_init determines how many backward/forward adiabatic preconditioning
>> steps there are for the ICs.  This only needs to be done for the ICs and
>> not any restart.
>>
>> make_nh control whether to re-initialize thel non-hydrostatic variables
>> "w" and "dz".  For a restart, these do not need to be initialized as they
>> are part of the restart files.
>>
>> external_ic determines whether the data is coming from restarts or from
>> an external source:  NGGPS, ECMWF, NCEP, etc.
>>
>> nggps_ic is a further refinement regarding the type of external IC being
>> utilized.
>>
>> mountain deals with terrain.  If set to .false. flat-earth is assumed
>> (phis=geopotential=0)
>>
>> warm_start determines whether restart files are expected or not.
>>
>>
>>
>> Rusty
>> --
>> Rusty Benson, PhD
>> Modeling Systems Group
>> NOAA Geophysical Fluid Dynamics Lab
>> Princeton, NJ
>>
>> On Wed, Apr 12, 2017 at 11:38 PM, Fanglin Yang - NOAA Affiliate <
>> fanglin.yang at noaa.gov> wrote:
>>
>>> Jun,
>>>
>>> I made another try with phy_data* included. The warm restart run with
>>> NSST appeared to be working.
>>> STMP: /gpfs/hps/stmp/emc.glopara/fv3test2017041100gfsfcst1
>>> ROTDIR: /gpfs/hps/ptmp/emc.glopara/prfv3test/gfs.20170411
>>>
>>> Although I am using the following settings
>>>
>>>
>>> *set make_nh = ".T."   set nggps_ic = ".T."*
>>>    set mountain = ".T."
>>>    set external_ic = ".F."
>>>    set warm_start = ".T."
>>>
>>>
>>> *  set na_init = 1*
>>>
>>>
>>> *So why do we need to change make_nh, nggps_ic and na_init to different
>>> values from cold to warm start?*
>>>
>>> *Fanglin*
>>>
>>> On Wed, Apr 12, 2017 at 10:54 AM, Jun Wang - NOAA Affiliate <
>>> jun.wang at noaa.gov> wrote:
>>>
>>>> Rusty ,
>>>>
>>>> I would like to check with you if the following setting you sent out
>>>> before for restart still works for nsst restart in IPD4?
>>>>
>>>>
>>>>    set make_nh = ".F."
>>>>    set nggps_ic = ".F."
>>>>    set mountain = ".T."
>>>>    set external_ic = ".F."
>>>>    set warm_start = ".T."
>>>>    set na_init = 0
>>>>
>>>>
>>>> Thanks.
>>>>
>>>> Jun
>>>>
>>>> On Mon, Dec 12, 2016 at 3:25 PM, Rusty Benson - NOAA Federal <
>>>> rusty.benson at noaa.gov> wrote:
>>>>
>>>>> Hi Jun,
>>>>>
>>>>> You were really close with your attempt.  Here are the things we've
>>>>> changed for seamless restarts when running multi-year AMIP-style runs with
>>>>> FV3GFS:
>>>>>
>>>>>    set make_nh = ".F."
>>>>>    set nggps_ic = ".F."
>>>>>    set mountain = ".T."
>>>>>    set external_ic = ".F."
>>>>>    set warm_start = ".T."
>>>>>    set na_init = 0
>>>>>
>>>>>
>>>>> The current date in coupler_nml is not a big deal as the beginning
>>>>> date and current date are encoded in the coupler.res file.
>>>>>
>>>>> For your own information, the gfs*.nc files are used only for the
>>>>> initial state and could be deleted from the INPUT directory for restart
>>>>> runs.
>>>>>
>>>>> Let me know if you have any other questions or issues trying to
>>>>> restart a run.
>>>>>
>>>>> thanks - Rusty
>>>>> --
>>>>> Rusty Benson, PhD
>>>>> Modeling Systems Group
>>>>> NOAA Geophysical Fluid Dynamics Lab
>>>>> Princeton, NJ
>>>>>
>>>>> On Mon, Dec 12, 2016 at 2:24 PM, Jun Wang - NOAA Affiliate <
>>>>> jun.wang at noaa.gov> wrote:
>>>>>
>>>>>> Rusty,
>>>>>>
>>>>>> I was trying to run a restart case for fv3 but failed. Would you
>>>>>> please let me know if I missed anything to restart fv3? Here is what I did:
>>>>>>
>>>>>> 1) Run fv3gfs for 5 days. I saw a RESTART directory in the run
>>>>>> directory with files such as  coupler.res, fv_core.res.nc, and 6
>>>>>> tiles of files such as fv_core.res.tile1.nc, fv_srf_wnd.res.tile1.nc,
>>>>>> fv_tracer.res.tile1.nc and sfc_data.tile1.nc.
>>>>>>
>>>>>> 2) In the input.nml, I changed the values of three namelist variable
>>>>>> in fv_core_nml:
>>>>>>
>>>>>> warm_start from .F. to .T.
>>>>>> external_ic from .T. to .F.
>>>>>> nggps_ic from .T. to .F.
>>>>>>
>>>>>> 3) I copy-ed all the restart files to the INPUT directory under
>>>>>> restart run directory.
>>>>>>
>>>>>> But now I got error message:
>>>>>>
>>>>>> WARNING from PE   145: diag_manager_mod::send_data_3d: A value for
>>>>>> dynamics in field slp (Min:   7.79516E+002, Max:   1.01180E+003) is outside
>>>>>> the range [  8.00000E+002,  1.20000E+003], and not equal to the missing
>>>>>> value.
>>>>>> ...
>>>>>>
>>>>>> forrtl: error (76): Abort trap signal
>>>>>> Image              PC                Routine            Line
>>>>>> Source
>>>>>> fv3_gfs_nh.prod.6  00000000017951D5  Unknown               Unknown
>>>>>> Unknown
>>>>>> ...
>>>>>>
>>>>>> Any clue that what I might do wrong? Thanks.
>>>>>>
>>>>>> Jun
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>
>>>
>>> --
>>> Fanglin Yang, Ph.D.
>>> Environmental Modeling Center
>>> National Centers for Environmental Prediction
>>> 301-6833722 <(301)%20683-3722>; fanglin.yang at noaa.gov
>>> http://www.emc.ncep.noaa.gov/gmb/wx24fy/fyang/
>>> http://www.emc.ncep.noaa.gov/gmb/STATS_vsdb/
>>>
>>
>>
>> _______________________________________________
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>> Ncep.list.fv3-announce at lstsrv.ncep.noaa.gov
>> https://www.lstsrv.ncep.noaa.gov/mailman/listinfo/ncep.list.fv3-announce
>>
>>
>
>
> --
> Dr. Shrinivas Moorthi
> Research Meteorologist
> Global Climate and Weather Modeling Branch
> Environmental Modeling Center / National Centers for Environmental
> Prediction
> 5830 University Research Court - (W/NP23), College Park MD 20740 USA
> Tel: (301)683-3718 <(301)%20683-3718>
>
> e-mail: Shrinivas.Moorthi at noaa.gov
> Phone:  (301) 683-3718   Fax: (301) 683-3718
>
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