[RegCNET] (no subject)

[gaoxj at cma.gov.cn]

Hi Wu,

1. The domain you are using maybe too small. We have 12*2 bufer zone in N-S and E-W direction which make your real doamin to be only 26*26. I am afraid this is too small.

2. Check the humidity and other variables in the ICBC file you created. Compare them with the orginal CCSM3 field to see if everything is OK.

Good luck,

Gao

----- Original Message ----- 
From: "Guangyu Wu" <wgy1972 at yahoo.com>
To: <regcnet at lists.ictp.it>
Sent: Wednesday, January 24, 2007 6:11 AM
Subject: [RegCNET] Problems in RegCM nested with CCSM3


> Hi all,
> 
> I am conducting a 25-year control run (1971-1995)
> using CCSM3 20th Century experiment output data (Q, T,
> U, V, Z3) as the ICBC. The domain is a 50x50, 30km
> spacing grid covering the whole Texas State, U.S..
> 
> I used the codes (CCSM.f)provided with the latest
> RegCM3 to generate the ICBC files. However, the output
> results from RegCM simulations are not good.
> Especially for summer, the monthly domain averaged
> precipitation are often below 0.1 mm/day. I tried Kuo,
> Grell, and MIT scheme and all have the same problem. 
> 
> 
> I checked back the monthly precipitation (PRECC+PRECL)
> outputted from CCSM3 and found this area has around
> monthly averaged 2-3 mm/day precipitation for summer.
> Those are close to the CRU observed values. So the
> problem might be associated with the RegCM3 codes.
> 
> I wonder if someone can give me some tips regarding
> this problem. Any suggestions would be greatly
> appreciated.
> 
> Guangyu Wu