[RegCNET] Re: ECHAM Runs

[Dr. Md. Nazrul Islam]

Dear Simon
Thanks for your mail.
Actually ECHAM5 run was performed by Faisal. I compared PRECIS outputs with 
ECHAM5 results. I completed PRECIS calibration with surface rainfall and 
temperature. It seems that PRECIS can estimate about 92% and 97% of surface 
rain and temperature respectively, averages for 1961-1990. I did some jobs 
using RegCM3 for 1982-2000. The RegCM3 in FC option seems able to estimate 
about 97% of surface rainfall averages for few years. Data are under 
processing for 30 years. However, Emanuel scheme is not found good for our 
region. 

I did not tried for FV data.

I think Asia window size(lon0 < lon1, and 
> lat0 < lat1) is below
39.375,120.,-19.6875,60.9375


Nazrul

Dr. Md. Nazrul Islam
Associate Professor
Department of Physics
Bangladesh University of Engineering and Technology
Dhaka-1000, Bangladesh
http://www.buet.ac.bd/phy/nazrul.htm

Phone: 880 2 966 5650 (PABX)
FAX: 880 2 861 3026, 880 2 861 3046


> Dear Nazrul Islam,
> 
> I am trying now to start running the RegCM3 with the ECHAM5 data 
> over the eastern Mediterranean. Some time ago I have already 
> completed a PRECIS based RegCM3 run using Grell FC and am now in the 
> process of repeating it using Emanuel scheme.
> 
> May I ask you several questions please? According to your letter 
> below your ECHAM5 run was more successful over your region than the 
> PRECIS based one. What is your opinion about  it now? Also - did you 
> also try the FV data? Is it worth trying? By the way in the terrain 
> part I am supposed to input lon0,lon1,lat0,lat1  (lon0 < lon1, and 
> lat0 < lat1). Could you please tell me what these values mean. I 
> could not find any explanation in the users guide.
> 
> Best,
> Simon
> 
> Dr. Simon O. Krichak
> simon.krichak at gmail.com
> 
> ----- Original Message ----- 
> From: "Dr. Md. Nazrul Islam" <mnislam at phy.buet.ac.bd>
> To: "S. Faisal Saeed" <faisal.saeed at gcisc.org.pk>; "Pal Jeremy"
> <jpal at ictp.it>
> Cc: <regcnet at lists.ictp.it>
> Sent: Tuesday, October 04, 2005 7:07 PM
> Subject: [RegCNET] Re: ECHAM Runs
> 
> > Hi Jeremy and Faisal,
> > It seems that ECHAM result of RegCM is beeter than that we obtained using
> > Grell-AS/FC. For your kind information, PRECIS results are included with
> > Faisal's monthly and seasonal values. In my openion, both model detected
> > well the precipitation band (i) through Nepal extended more NW and SE, 
and
> > (ii) Western Ghat of India. Some dissimilarities are (i) in and around
> > Shillong hill of India(where Cherapunji, the highest rainfall recorded
> > station existed) and (ii) over the Bay of Bengal.
> >
> > I am looking for the ECHAM version of RegCM and analyzing detail for
> > longterm data, we may find better conclusion.
> >
> > For your kind information, PRECIS can measure about 92% of surface rain
> > over
> > Bangladesh.
> >
> > Nazrul
> >
> > Dr. Md. Nazrul Islam
> > Associate Professor
> > Department of Physics
> > Bangladesh University of Engineering and Technology
> > Dhaka-1000, Bangladesh
> >
> > Phone: 880 2 966 5650 (PABX)
> > FAX: 880 2 861 3026, 880 2 861 3046
> >
> >
> > ---------- Original Message -----------
> > From: "S. Faisal Saeed" <faisal.saeed at gcisc.org.pk>
> > To: "Pal Jeremy" <jpal at ictp.it>
> > Cc: "jagadish karmacharya" <j_karmacharya at yahoo.com>, "archana shrestha"
> > <archanamet at yahoo.com>, "Dr. Md. Nazrul islam" <mnislam at phy.buet.ac.bd>,
> > "BI
> > XUNQIANG" <bixq at ictp.it>, "Filippo Giorgi" <giorgi at ictp.it>,
> > <shahbazmehmood at gmail.com>, <madnanabid at gmail.com>
> > Sent: Mon, 3 Oct 2005 11:54:36 +0500
> > Subject: ECHAM Runs
> >
> >> Hi Jeremy,
> >>
> >> The results of ECHAM runs for 1981 are attached. It was a 2 year run
> >> 1980-1981. Overall the monthly and seasonal patterns of Precip and
> >> Temp are good. In the months of Oct, Nov and Dec (post-monsoon) the
> >> precip is highly over-estimated by the model over northern Pakistan,
> >> these are quite dry months in Pak. The seasonal winter JFM
> >> precipitation with ECHAM over northern Pakistan is quite reasonable,
> >> the climatological value JFM of precip is 4 mm/day, while year to
> >> year values may go up to 6 mm/day at some stations, where as in the
> >> Model with ERA40 it is about 8-9 mm/day.
> >>
> >> Best,
> >> Faisal
> >> __________________________________________________________________
> >> SYED Faisal Saeed - Meteorologist
> >> Global Change Impact Studies Centre
> >> 1st Floor, Saudi - Pak Tower, Blue Area,
> >> P.O.Box No 3022 , Islamabad, Pakistan.
> >> Tel:      +92-51-9219785
> >> Fax:     +92-51-9219787
> >> e-mail:    faisal.saeed at gcisc.org.pk
> >> __________________________________________________________________
> > ------- End of Original Message -------
> >
> >
> >
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------- End of Original Message -------