MICROPHYSICS: Lin et-al vs Ferrier

Questions and other topics related to UEMS 15.
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norulz
Posts: 89
Joined: Thu Mar 12, 2015 1:43 pm

MICROPHYSICS: Lin et-al vs Ferrier

Post by norulz » Sun Mar 26, 2017 10:19 am

Hello all,

I tried the Ferrier Micro Physics scheme (MP_PHYSICS = 5) and found it to be about 10% faster than the default scheme, Lin et-al (MP_PHYSICS = 2).

What differences might I expect in the resulting forecast using Ferrier scheme with a single nested model at 12km/4km grids?

Thanks,
David

meteoadriatic
Posts: 1556
Joined: Wed Aug 19, 2009 10:05 am

Re: MICROPHYSICS: Lin et-al vs Ferrier

Post by meteoadriatic » Sun Mar 26, 2017 10:25 am

Hello,

I don't know why LIN is set as default in EMS. Not much of people chose LIN these days. It is also very old, and I'm not sure if it is much updated recently.

Ferrier is fastest but is developed for NMM and then ported to ARW from there. I believe it is also worst performing scheme on ARW but I didn't tested it much. I usually use WSM5 if I need solid scheme with good speed. Not fast as Ferrier but I'm sure it is better.

norulz
Posts: 89
Joined: Thu Mar 12, 2015 1:43 pm

Re: MICROPHYSICS: Lin et-al vs Ferrier

Post by norulz » Sun Mar 26, 2017 12:07 pm

Thanks for the suggestion. WSM5 is quite fast. Not as much as Ferrier but faster than Lin.
I will see if I get better precipitation forecasts next winter.

meteoadriatic
Posts: 1556
Joined: Wed Aug 19, 2009 10:05 am

Re: MICROPHYSICS: Lin et-al vs Ferrier

Post by meteoadriatic » Sun Mar 26, 2017 2:21 pm

By the way, this is nice document, it doesn't say what physics option is superior but if nothing there must be a reason why for example most used MP is WSM6, why some other schemes use almost nobody, and so on...
http://www2.mmm.ucar.edu/wrf/users/wrf_ ... survey.pdf

dominic
Posts: 333
Joined: Thu Jun 14, 2012 7:19 am

Re: MICROPHYSICS: Lin et-al vs Ferrier

Post by dominic » Mon Mar 27, 2017 4:24 pm

Hello Ivan, I started using too WDM 6-class scheme. Do you have any other suggestions on physical ?, before I used Lin et al. scheme

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