[RegCNET] RegCNET Digest, Vol 265, Issue 1

[Dr AP DIMRI]

Thanks Bamba,
While simulating Indian monsoon - I am also getting excessive precipitation using Emanuel Scheme. I will look for pages you have provided.


 
Sincerely
Dimri





> From: regcnet-request at lists.ictp.it
> Subject: RegCNET Digest, Vol 265, Issue 1
> To: regcnet at lists.ictp.it
> Date: Fri, 15 Oct 2010 12:00:09 +0200
> 
> 
> 
> Contents:
> 
>    1. NPS problem (zou liwei)
>    2. Re :  NPS problem (Bamba Sylla)
> 
> 
> ----------------------------------------------------------------------
> 
> From: zou liwei <zouliwei at gmail.com>
> Subject: [RegCNET] NPS problem
> 
> Dear ALL,
> 
>        Sorry for disturbing you.
> 
>         I made a simulation employing regCM3 over Monsoon domain. The
> EMANUEL convection scheme is used.
> 
>         However, I found the precipitation at some grids is highly
> over-estimated, implying a "Numerical point storm (NPS)" problem.
> 
>        In current version of RegCM, it only treat this problem when Kuo
> Scheme is employed (Giorgi, 1991).
> 
>        SO, have anybody ever dealt with the NPS problem when employ EMANUEL
> convection scheme or Grell Scheme?
>         Woule you mind giving me any suggestion?
> 
>        Thank you very much!
> 
>        All the Best,
> 
>        Liwei
>     2010-10-14
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> ------------------------------
> 
> From: Bamba Sylla <syllabamba at yahoo.fr>
> Subject: [RegCNET] Re :  NPS problem
> 
> Hi Lewei,
> 
> Emanuel scheme in its default setting tends to give excessive rainfall. To 
> overcome this you need to calibrate it for your region. Parameters that can be 
> changed include elcrit, tlcrit, coeffr and cu in the namelist emanparam in 
> param.F. For insight in how these parameters can be changed, see 
> http://wind.mit.edu/~emanuel/home.html and retrieve related documents. Couple of 
> peoples also detailled their calibrations here:
> http://onlinelibrary.wiley.com/doi/10.1002/joc.1681/pdf
> http://journals.ametsoc.org/doi/abs/10.1175/2009JCLI2388.1
> 
> Good luck,
> cheers!
>  
> ***************************************************
> Mouhamadou Bamba SYLLA, PhD
> Post-Doc Fellow, Earth System Physics
> International Centre for Theoretical Physics
> Strada Costiera 11, 34100 Trieste, Italy
> Office tel: 0039 040 2240 385
> Cell: 0039 34 71 94 06 55 
> emails: msylla at ictp.it, syllabamba at yahoo.fr 
> ***************************************************
> 
> 
> 
> 
> ________________________________
> De : zou liwei <zouliwei at gmail.com>
> ? : regcnet at lists.ictp.it
> Envoy? le : Jeu 14 octobre 2010, 17h 48min 22s
> Objet : [RegCNET] NPS problem
> 
> Dear ALL,
>   
>        Sorry for disturbing you.
> 
>         I made a simulation employing regCM3 over Monsoon domain. The EMANUEL 
> convection scheme is used.
>   
>         However, I found the precipitation at some grids is highly 
> over-estimated, implying a "Numerical point storm (NPS)" problem.
> 
>        In current version of RegCM, it only treat this problem when Kuo Scheme 
> is employed (Giorgi, 1991).
> 
>        SO, have anybody ever dealt with the NPS problem when employ EMANUEL 
> convection scheme or Grell Scheme? 
> 
>         Woule you mind giving me any suggestion?
> 
>        Thank you very much!
> 
>        All the Best,
> 
>        Liwei
>     2010-10-14
> 
> 
> 
>       
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