[RegCNET] Re : NPS problem

[Bamba Sylla]

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>
À : regcnet at lists.ictp.it
Envoyé 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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