[Wrf-users] Wrf-users Digest, Vol 87, Issue 17

[Y. Yamasaki]

Ref: Vol87, Issue 17.

The negative height is probably related to model top 
configuration if you are preparing your own fc files/etc.. 
ref to -  WRFVAR

look  at log files and you see that tutorial example set 
the model top to 10 hPa. So that, if you are preparing 
your own fc files you should set the top to 10 hPa OR 
change all setting by including :

p_top_requested = 5000 (if top is 50 hPa)

best regards,

yyamazaki



Em Thu, 24 Nov 2011 12:00:02 -0700
  wrf-users-request at ucar.edu escreveu:
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> Today's Topics:
> 
>   1. WRFDA: Negative Heights Error (Sean Crowell)
>   2. Re-Calculating precipitation? (Ehsan Beigi) (Om 
>tripathi)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Wed, 23 Nov 2011 11:51:42 -0600
>From: Sean Crowell <Sean.Crowell at noaa.gov>
> Subject: [Wrf-users] WRFDA: Negative Heights Error
> To: wrf-users at ucar.edu
> Message-ID: 
><A34A81A1-5BF4-4255-A241-73B27499D337 at noaa.gov>
> Content-Type: text/plain; charset=US-ASCII; 
>format=flowed; delsp=yes
> 
> I've run WRF and generated a set of wrfout files, to use 
>as a first  
> guess for WRFDA in a 3D-Var setting.  I've linked all 
>the files as it  
> says to do in the tutorial, but when I run 
>da_wrfvar.exe, I get the  
> message "Negative height found" in my rsl.error files. 
> Indeed, when I  
> look at the wrfout files, there are negative heights.  I 
>know that  
> this is not unusual, but I'm not sure how to correct the 
>problem to  
> make wrfvar work correctly.  Any ideas?
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Wed, 23 Nov 2011 13:33:09 -0700
>From: Om tripathi <tripathi at atmo.arizona.edu>
> Subject: [Wrf-users] Re-Calculating precipitation? 
>(Ehsan Beigi)
> To: wrf-users at ucar.edu
> Message-ID: <4ECD5885.7070404 at atmo.arizona.edu>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Ehsan,
> 
> WRF accumulates precipitation from the day of the start 
>of run. So to calculate daily precipitation you need to 
>first add RAINC and RAINNC for 00 hours of day1 and 00 
>hours of day2 and subtract the value for day1 from the 
>value for day2 or vice versa. Remember: WRF keeps 
>accumulating rains as the run prograsses.
> 
> Om 
> 
> Message: 1
> Date: Mon, 21 Nov 2011 17:46:17 -0600
>From: Ehsan Beigi <ebeigi3 at tigers.lsu.edu>
> Subject: [Wrf-users] Calculating precipitation?
> To: wrfhelp <wrfhelp at ucar.edu>, wrf-users at ucar.edu
> Message-ID:
> 	<CADwy=L+OkUcvSCEEbXGLoJ1QmD_LXKehZp=ovcLM+bv6P05mPg at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
> 
> Dear Sir/Madam,
> 
> I added RAINC to RAINNC to calculate precipitation for 
>my domain , and then
> for each day , i took summation of every 6hour (00 06 12 
>18 )to estimate
> the daily precipitation. do you think i am doing the 
>correct way to
> calculate precipitation? i think it is wrong because the 
>simulated
> precipitation has increasing trend while it  should be 
>stochastic.
> 
> 
> Bests,
> 
> 
> Ehsan Beigi
> 
> 
> 
> wrf-users-request at ucar.edu wrote:
>> Send Wrf-users mailing list submissions to
>> 	wrf-users at ucar.edu
>>
>> To subscribe or unsubscribe via the World Wide Web, 
>>visit
>> 	http://mailman.ucar.edu/mailman/listinfo/wrf-users
>> or, via email, send a message with subject or body 
>>'help' to
>> 	wrf-users-request at ucar.edu
>>
>> You can reach the person managing the list at
>> 	wrf-users-owner at ucar.edu
>>
>> When replying, please edit your Subject line so it is 
>>more specific
>> than "Re: Contents of Wrf-users digest..."
>>
>>
>> Today's Topics:
>>
>>    1. Calculating precipitation? (Ehsan Beigi)
>>    2. Problem compiling WRF: (KENOBI ISIMA MORRIS)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Mon, 21 Nov 2011 17:46:17 -0600
>> From: Ehsan Beigi <ebeigi3 at tigers.lsu.edu>
>> Subject: [Wrf-users] Calculating precipitation?
>> To: wrfhelp <wrfhelp at ucar.edu>, wrf-users at ucar.edu
>> Message-ID:
>> 	<CADwy=L+OkUcvSCEEbXGLoJ1QmD_LXKehZp=ovcLM+bv6P05mPg at mail.gmail.com>
>> Content-Type: text/plain; charset="iso-8859-1"
>>
>> Dear Sir/Madam,
>>
>> I added RAINC to RAINNC to calculate precipitation for 
>>my domain , and then
>> for each day , i took summation of every 6hour (00 06 12 
>>18 )to estimate
>> the daily precipitation. do you think i am doing the 
>>correct way to
>> calculate precipitation? i think it is wrong because the 
>>simulated
>> precipitation has increasing trend while it  should be 
>>stochastic.
>>
>>
>> Bests,
>>
>>
>> Ehsan Beigi
>>
>>
>>
>>   
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