[Wrf-users] Long-run Simulation

[Mickias Kebede]

Hello! Tabish,

Thank you very much for your email. Yes, I've used the model output from
NCAR to enforce my model (NCAR CESM Global Bias-Corrected CMIP5 Output to
Support WRF/MPAS Research) and I'm interested in simulating from 1970 to
2005 for the past and do the same in the mid-century. No need to do
ungrib in this case as the data is already in intermediate format and I've
downloaded the data for the entire time frame. My concern is, for that
one-year successful simulation I did, the size of wrfbody is about 20 GB
and I'm concerned how big it's going to be for the entire 30 years? I'm
wondering if there is a way to break the 30 years simulation into fewer
number of years such as three 10 years while I run the metgrid.exe and
real.exe?

Thank you very much again and any help would be highly appreciated.

Kind regards,

Mickias,



On Thu, Feb 23, 2017 at 9:35 AM, Tabish Ansari <tabishumaransari at gmail.com>
wrote:

> Hi Mickias,
>
> I assume that you had your initial and boundary conditions for meteorology
> for the one year that you ran the model for, in your wrfinput and wrfbdy
> files. You must have produced these files through ungrib and metgrid
> utilities, and must have downloaded a reanalysis or global model data like
> FNL/GFS or ECMWF to create these files.
>
> You cannot run a regional model (WRF) without initial and (more
> importantly) boundary conditions. So you'll have to first run a global
> model for the 30 years past and 30 years future, or alternatively contact
> someone who has run it and has the output available for that period. Then
> use that data (instead of FNL etc.) to create new wrfinput and wrfbdy
> files. This would require a fair amount of restructuring and reformatting
> of data if you want it to be processed by WPS. Once you've produced your
> wrfinput and wrfbdy files for the required period, you can go ahead and run
> WRF.
>
>
> Good luck!
>
> Tabish
>
> Tabish U Ansari
> PhD student, Lancaster Environment Center
> Lancaster Univeristy
> Bailrigg, Lancaster,
> LA1 4YW, United Kingdom
>
> On 23 February 2017 at 10:53, Mickias Kebede <ws.micky at gmail.com> wrote:
>
>> Hello!
>>
>> I did a successful one-year simulation of three different parallel cases
>> of simulations. I would like to do the same three parallel runs but this
>> time with 30 years in the past and 30 years in the future. Can I just
>> adjust the dates in my namelist.wps to my 30 years span timeframe and run
>> geogrid and do the rest of the running processes as one continuous
>> simulation? Or is there any another trick that I should do perhaps to break
>> the long 30 years simulation into smaller such as three 10 year simulations?
>>
>> Which one is the most effective way of doing such type of long
>> simulations?
>>
>> Thank you very much and any help would really be appreciated.
>>
>> --
>> ​
>>
>>
>>
>>
>> *Best regards,Mickias*
>>
>> _______________________________________________
>> Wrf-users mailing list
>> Wrf-users at ucar.edu
>> http://mailman.ucar.edu/mailman/listinfo/wrf-users
>>
>>
>


-- 
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