[Wrf-users] ERA-Interim data

[Md Hosen]

Dear Nikhil,


Thanks for your heartiest cooperation. Finally, I have downloaded pressure levels and surface data. I have seen some posts in WRF users group that they run calc_ecmwf_p.exe between ungrib.exe and metgrid.exe.


Could you tell me please is it always essential if I use ERA-interim data.


Also I have seen that if I want to run calc_ecmwf_p.exe,then I need ecmwf_coeffs table in the working directory. According to ARW user guide, I have found a link "http://www.ecmwf.int/products/data/technical/model_levels/index.html" for ecmwf_coeffs table. But the table is not existed in that link. I want to use "e_vert=50 or 60".

Could you please suggest any link or any sample where I can get ecmwf_coeffs table.

Could you please advise what criteria I have to follow to edit that table.


Your further suggestions will be highly appreciated.


Kind regards,

Hossain


________________________________
From: Nikhil Garg <nikhilgarg.gju at gmail.com>
Sent: 15 August 2015 02:04
To: Md Hosen
Cc: wrf-users at ucar.edu
Subject: Re: [Wrf-users] ERA-Interim data

you can use either of them

http://computing.io/wp/category/ecmwf/
http://conorsweeneyucd.blogspot.sg/2015/01/how-to-run-wrf-driven-by-ecmwf-data.html

check these links out

On 14 August 2015 at 13:50, Md Hosen <md.hosen at live.vu.edu.au<mailto:md.hosen at live.vu.edu.au>> wrote:

Dear WRF users,


Good day!


First I have tried to use FNL data for WRF model. But I am not getting the good results compared to observation data. Therefore, I wish to use ERA-interim data. I have seen on the following website that there are different types (Types of Level) data sets  such as Model Levels, Pressure Levels, Surface Levels and so on.


http://apps.ecmwf.int/datasets/data/interim-full-daily/?levtype=pl


(1) Could you tell me please what is the criteria to select different data options. Do I need all types of data into same folder? Or I can use any of them.


(2) Do I need any preprocessing work after downloading the data and before use in WRF model? Is it need to change anything in Vtable?


(3) I have seen that it is possible to download one month data at a time. But if I want to download the data for couple of days then how I can download it?


(4) After downloading the data for a month, I got only one file containing whole data set. Do I need to split the time step of the data (like FNL data) . For Instance, 00hrs, 06 hrs, 12 hrs and 18 hrs. If so, then how I can do that.


Hope you will extend your helping hand.


Kind regards,

Hossain


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--
Regards

Nikhil

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