[RegCNET] Model Crashes even at lowest dt

Thu Dec 26 10:55:30 CET 2013

Hello everyone,
      I have been puzzled this error so long. Also, I have tried so many
times basing on the error(warning for decrease dt), and I guarantee that
the dt < 3ds. What do you think how to solve this puzzle. How we can set
these parameters truly. Thank you !

Best wishes!

        Peng Xiaoqing
2013/12/26 Syed Ahsan Ali <ahsanshah01 at gmail.com>

>  Dear Shaukat Bhai
>
> Thank You for email. But domain complexity also makes the difference. The
> timestepping which works for some domain may not work on other. In my
> simulation domain has topographic complexity and mountains above 5000m.
> I am current;y using dt values as suggested by OMER and the model
> simulation timing has drastically decreased, lets see if I am able to cross
> the previous error point.
> Regards
>
>
> On Thu, Dec 26, 2013 at 2:28 PM, shaukat Ali <pirshauki at gmail.com> wrote:
>
>>  Dear Ahsan,
>>
>> I used the following values with 20km and its working fine. Please also
>> try this:
>>
>> /
>>  &timeparam
>>  dtrad   =    30.,
>>  dtabem  =    18.,
>>  dtsrf   =   120.,
>>  dt      =   30.,
>>  /
>>
>> with regards,
>> Shaukat Ali
>>
>>
>>  ------------------------------
>> Date: Thu, 26 Dec 2013 12:47:04 +0500
>> From: ahsanshah01 at gmail.com
>> To: egy_mohamad at yahoo.com
>> CC: regcnet at lists.ictp.it
>> Subject: Re: [RegCNET] Model Crashes even at lowest dt
>>
>>
>>  Dear Mohamed
>> Thank you for your reply. The resolution is 25km. I am running simulation
>> again with reduced value of dtsrf. Let see what happens.
>> Thank you!
>> Best Regards
>>
>>
>>  On Thu, Dec 26, 2013 at 12:20 PM, Mohamad Ibrahim OMAR <
>> egy_mohamad at yahoo.com> wrote:
>>
>>  Dear Syed,
>> First we need to know what is your resolution because this error came
>> from the CFL creteria.
>> anyway if you use high resolution like 20 or 25 Km you should decrease
>> the dt and also dtsrf. as the following;
>>
>> á &timeparam
>> ádtáááá =áá 30.,áá ! time step in seconds
>> ádtradá =ááá 30.,áá ! time interval solar radiation calculated (minutes)
>> ádtabem =ááá 18.,áá ! time interval absorption-emission calculated (hours)
>> ádtsrfá =áá 120.,áá ! time interval at which land model is called
>> (seconds)
>>
>>
>> note that dtsrf = 3 dt
>> hope this helpfull.
>> Regards
>>
>>  Mohamed Ibrahim El-Sayed OMAR
>> Egyptian Meteorological Authority
>> Scientific Research Department
>> Climate Studies Centre
>> Kobry El-Quobba, P.O.Box. 11784
>> Cairo, EGYPT
>> Mobil phoneá : 002 01060802805á
>> Home Phone : 002 0482370261
>>
>>
>>    On Thursday, December 26, 2013 8:21 AM, Syed Ahsan Ali <
>> ahsanshah01 at gmail.com> wrote:
>>    I am running a simulation with RegCM-4.3.5.6 version and using CMIP5
>> GCM HadGEM2-ES historical data. The model run stops at a point after
>> running 24 years and I get the following error. I have tried reducing the
>> dt to lowest values (starting from 40 upto 5) but still the problem is
>> same.
>> Please advise!
>> áAhsan
>> á
>> *Calculate solar declination angle at á 1994041600*
>> *áJDay á á á 105.00 solar declination angle = á10.35514687 degrees*
>> *á á á á á á á á á ásolar TSI irradiance á á= á á1367.0000 W/m^2*
>> *áSEARCH BC data for á 1994041606*
>> *áREADY áBC from á á á 1994041600 áto á 1994041606*
>> *ámod_tendency.F90 : á á 1434: á á á á á á1*
>> *áMAXVAL ATEN U : á0.23073690760361867 á á*
>> *áII : á á á á 111 , JJ : á á á á á26 , KK : á á á á á 3*
>> *áMAXVAL ATEN QV : á 4.6023637038836721E+023*
>> *áMAXVAL ATEN U : á0.21479913170870082 á á*
>> *áII : á á á á 170 , JJ : á á á á 171 , KK : á á á á á13*
>> *áMAXVAL ATEN QV : á 1.0977250150088500E+058*
>> *áMAXVAL ATEN T : á 1.5864251565803420E+056*
>> *áMAXVAL ATEN U : á 4.1836639784397066E+110*
>> *áMAXVAL ATEN V : á 7.3548874512758020E+111*
>> *áMAXVAL ATEN QV : á 4.4003993185280386E+052*
>> *áMAXVAL ATEN QC : á 7.7744572396704626E+052*
>> *áMAXVAL ATEN U : á0.71302511089845821 á á*
>> *áII : á á á á 169 , JJ : á á á á 163 , KK : á á á á á23*
>> *áMAXVAL ATEN V : á0.25478128763041386 á á*
>> *áII : á á á á 169 , JJ : á á á á 148 , KK : á á á á á12*
>> *áMAXVAL ATEN T : á0.85502878291439455 á á*
>> *áMAXVAL ATEN T : á0.70550992717408301 á á*
>> *áII : á á á á 159 , JJ : á á á á 201 , KK : á á á á á23*
>> *áMAXVAL ATEN V : á0.27443318054567201 á á*
>> *áII : á á á á 105 , JJ : á á á á 199 , KK : á á á á á 7*
>> *áMAXVAL ATEN T : á0.74070002849556327 á á*
>> *áII : á á á á 139 , JJ : á á á á 203 , KK : á á á á á23*
>> *áMAXVAL ATEN U : á0.66880242640804233 á á*
>> *áII : á á á á 137 , JJ : á á á á 199 , KK : á á á á á23*
>> *áMAXVAL ATEN V : á0.23854246733191675 á á*
>> *áII : á á á á 127 , JJ : á á á á 197 , KK : á á á á á 9*
>> *áMAXVAL ATEN U : á0.71785515648095088 á á*
>> *áII : á á á á 164 , JJ : á á á á 206 , KK : á á á á á23*
>> *áMAXVAL ATEN V : á0.26687884044440968 á á*
>> *áII : á á á á 167 , JJ : á á á á 206 , KK : á á á á á 8*
>> *áII : á á á á 116 , JJ : á á á á 200 , KK : á á á á á23*
>> *áMAXVAL ATEN U : á0.28197099267345371 á á*
>> *áII : á á á á 119 , JJ : á á á á 202 , KK : á á á á á 8*
>> *áMAXVAL ATEN V : á0.31751600673955133 á á*
>> *áII : á á á á 113 , JJ : á á á á 202 , KK : á á á á á 8*
>>
>> *--------------------------------------------------------------------------*
>> *MPI_ABORT was invoked on rank 63 in communicator MPI_COMM_WORLD*
>> *with errorcode 1.*
>> *NOTE: invoking MPI_ABORT causes Open MPI to kill all MPI processes.*
>> *You may or may not see output from other processes, depending on*
>> *exactly when Open MPI kills them.*
>>
>> *--------------------------------------------------------------------------*
>> *áATM variables written at 1994-04-16 00:00:00 UTC á á á á*
>> *áSRF variables written at 1994-04-16 00:00:00 UTC á á á á*
>> *áSTS variables written at 1994-04-16 00:00:00 UTC á á á á*
>> *áRAD variables written at 1994-04-16 00:00:00 UTC á á á á*
>> *áWHUUUUBBBASAAAGASDDWD!!!!!!!!!!!!!!!!*
>> *áNo more atmosphere here....*
>> *áCFL violation detected, so model STOP*
>> *á#####################################*
>> *á# á á á á á áDECREASE DT !!!! á á á #*
>> *á#####################################*
>> á
>> á
>> á
>> á
>> á
>>
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>>
>>
>>
>>
>> --
>> Syed Ahsan Ali Bokhari
>> Electronic Engineer (EE)
>>
>> Research & Development Division
>> Pakistan Meteorological Department H-8/4, Islamabad.
>> Phoneá#áoff á+92518358714
>> Cell # +923155145014
>>
>> _______________________________________________ RegCNET mailing list
>> RegCNET at lists.ictp.it https://lists.ictp.it/mailman/listinfo.cgi/regcnet
>>
>
>
>
> --
> Syed Ahsan Ali Bokhari
> Electronic Engineer (EE)
>
> Research & Development Division
> Pakistan Meteorological Department H-8/4, Islamabad.
> Phone # off  +92518358714
> Cell # +923155145014
>
> _______________________________________________
> RegCNET mailing list
> RegCNET at lists.ictp.it
> https://lists.ictp.it/mailman/listinfo.cgi/regcnet
>
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