[Wrf-users] Wrf-users Digest, Vol 74, Issue 14

[vincent Ajayi]

On 10/21/10, wrf-users-request at ucar.edu <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. RIP4 - ./rip doesn't work (Mikhail Titov)
>    2. Damping and Diffusion Issues (Huber, David)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Thu, 21 Oct 2010 12:56:44 +1300
> From: Mikhail Titov <TitovM at ap.aurecongroup.com>
> Subject: [Wrf-users] RIP4 - ./rip doesn't work
> To: wrfhelp <wrfhelp at ucar.edu>
> Cc: "wrf-users at ucar.edu" <wrf-users at ucar.edu>
> Message-ID:
> 	<OF695EA23D.75FC8C56-ONCC2577C2.00827186-CC2577C2.00838973 at conwag.com>
> Content-Type: text/plain; charset="us-ascii"
>
> Dear WRF Help and WRF Users,
>
> I'm trying to work with RIP4 installed on SGI after 5 years I used it last
> time.
>
> I don't remember any problems when I worked with RIP4 before but I have
> very odd problems
> with RIP4 now.
>
> 1) ./ripdp runs without any problems, creates all files and stops with:
>
>        forecast time=    7.000556
>         (YYMMDDHH = 10083119 plus      2.00000 seconds)
>     But this time is beyond the latest requested time.
>     RIPDP is now stopping.
>
>  ====================================
>   We're outta here like Vladimir !!
>  ====================================
> FORTRAN STOP
>
> But any attempt to run ./rip itself fails with the same mistake (bug?):
> ====================
> [titovm at aurecon RIP4]$ ./rip -f Takaka/Taka rs-101cg_d03_wd
>  Usage:
>     rip [-f] model_case_name rip_case_name
>  Options:
>     -f: standard rip printout should go to a file
>         named rip_case_name.out rather than to
>         the screen.
>  Note: "rip_case_name" should be the root part of
>  the name of the ".in" file.  Do not inlcude ".in"
>  at the end of "rip_case_name" on the
>  rip command line.
> FORTRAN STOP
> ======================
>
> Did anybody have the same problems with RIP4? I googled this problem and
> found a couple of notices on
> WRF forum with the same RIP4 problem. But I didn't find any responses with
> solutions.
>
> Any help or suggestion is highly appreciable.
>
> Many thanks,
> Mikhail
> ________________________________________________________________________________
>
> Dr. Mikhail Titov | Energy  | Aurecon
> Ph: +64 3 366 0821 ext.9231 DDI +64 367 32 31 | Fax: +64 3 379 6955 | Mob:
> +64 21 106 5563
> Email: TitovM at ap.aurecongroup.com
> PO Box 1061, 122 Gloucester Street | Christchurch 8140 | New Zealand
> http://www.aurecongroup.com
> http://www.aurecongroup.com/apac/groupentity/
> ________________________________________________________________________________
>
> Please consider your environment before printing this e-mail.
>
>
>
>
>
> Disclaimer - http://www.aurecongroup.com/apac/disclaimer/
>
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL:
> http://mailman.ucar.edu/pipermail/wrf-users/attachments/20101021/ece19cfb/attachment-0001.html
>
> ------------------------------
>
> Message: 2
> Date: Thu, 21 Oct 2010 09:15:40 -0500
> From: "Huber, David" <dbh409 at ku.edu>
> Subject: [Wrf-users] Damping and Diffusion Issues
> To: <wrf-users at ucar.edu>
> Message-ID:
> 	<B879161FC3A1444B86315CDA69FCADB9E9F38F at MAILBOX-13.home.ku.edu>
> Content-Type: text/plain;	charset="iso-8859-1"
>
>
> Hello All,
>
> I am having an issue with vertical velocities at 700mb on a 12km grid
> spacing model run for July 2001. The full simulation is for June-July 2001,
> but the issue is most noticeable in July. The first time I ran the model, I
> opted not to use damping or 6th-order diffusion, which resulted in the
> following month-long average 700mb w-field:
> http://i1233.photobucket.com/albums/ff389/dbh409/july_C_W700.png
> The grid scale noise over N Texas was concerning to me, so to remove 2dx
> noise I turned on 6th order diffusion (diff_6th_opt = 1, diff_6th_factor =
> 0.12) and in case the problem was being caused by the interaction with the
> mountain range in eastern New Mexico and the subtropical high positioned
> over N Texas, I also turned on w-Rayleigh damping (damp_opt = 3, damp_coef =
> 0.2). This resulted in the following w-field at 700mb:
> http://i1233.photobucket.com/albums/ff389/dbh409/july_base_W700.png
>
> (units in both images are cm/s)
>
> This solution removes the grid scale noise, but introduces a wave-like
> solution everywhere. Also, it introduces positive vertical velocities over
> the southeastern corner of the domain (you'll have to click on the links to
> see this, since the pictures are too large to show on this forum). I am
> leaning towards the second solution, but I worry about whether the wave-like
> velocities should be noticeable on a month-long average. I'm really at a
> loss as to how to proceed. Should I consider different options for damping
> and diffusion? Is the grid scale noise OK, or if not, does the damped and
> diffused solution seem OK? Any incites would be much appreciated.
>
> Thanks,
>
> Dave
>
>
> ------------------------------
>
> _______________________________________________
> Wrf-users mailing list
> Wrf-users at ucar.edu
> http://mailman.ucar.edu/mailman/listinfo/wrf-users
>
>
> End of Wrf-users Digest, Vol 74, Issue 14
> *****************************************
>

-- 
Sent from my mobile device

Department of Meteorology
Federal University of Technology,
PMB 704 Akure
Nigeria