[Wrf-users] Land use & Topography effects in model

[Tabish Ansari]

Hi

You might want to manually edit the LU_INDEX and LANDUSEF (land use
fraction) variables in the geo_em.d0x.nc file based on your requirement.
You can locate the grid(s) of your interest by collocating the required
lat-long.


Hope this helps.

Cheers,

Tabish

Tabish U Ansari
PhD student, Lancaster Environment Center
Lancaster Univeristy
Bailrigg, Lancaster,
LA1 4YW, United Kingdom

On 21 July 2016 at 22:32, Nikhil Garg <nikhilgarg.gju at gmail.com> wrote:

> Hi,
> I think i can suggest something for part of your question.
>
> If you want to edit the geogrid data with some sort of gui experience, in
> past I have used the tools from the below mentioned link.
>
> http://www.nusculus.com/wtools
>
> Check out wtools, it will allow you to see and modify some data in geo_em
> file. I think it works for land use, however i dont think you can modify
> the land mask. Maybe someone on wrfhelp can suggest better answer.
>
> In past I have used a modified version of code
>
> https://github.com/hetland/octant/blob/master/octant/grid.py
>
> from this repository. At line number 937, it shows how python can be used
> to edit the mask, but i think it is not a quick solution.
>
>
> On 21 July 2016 at 16:33, Sara Jackson <sja at dhigroup.com> wrote:
>
>> Hi wrfhelp,
>>
>>
>>
>> I am trying to run ARW-WRF version 3.7 over an area with a complex
>> coastline. The area of interest involves small islands. The one of most
>> importance being ~7km x ~2km, located 500m off the main coastline and is
>> also partly reclaimed land. It is of high importance that this island is
>> resolved, as its effect is key to the study. The plan is have the finest
>> nest with a horizontal of <1km (probably 400m). The problem I have is that
>> the land mask in the model doesn’t resolve the island. I am including is
>> MODIS ~500m and ASTER ~30m topography as static data.
>>
>>
>>
>> Do you have any suggestions/advice on how to solve this problem?
>>
>> Are there any higher resolution land use data sets available? (the area
>> of interest is Australia)
>>
>> Is it possible to manually edit the landmask?
>>
>>
>>
>>
>>
>>
>> Best regards,
>>
>>
>>
>> *Sara Jackson*
>>
>> MMet Meteorology and Climate
>>
>> Junior Meteorologist
>>
>> *Modelling and Hydroinformatics Services*
>>
>>
>>
>> [image: DHI logo]
>>
>>
>>
>> *DHI Water & Environment (S) Pte Ltd*
>>
>> 1 Cleantech Loop
>>
>> #03-05 CleanTech One
>>
>> Singapore 637141
>>
>>
>>
>> Tel:
>>
>>
>>
>> +65 6777 6330
>>
>>
>>
>> sja at dhigroup.com
>>
>> www.dhigroup.com
>>
>>
>>
>> The expert in *WATER ENVIRONMENTS*
>>
>>
>>
>> This message contains information which may be confidential and
>> privileged. Unless you are the intended recipient
>> (or authorised to receive this message for the intended recipient), you
>> may not use, copy, disseminate or disclose
>> any information contained in it thereof. If you have received this
>> communication in error, please advise the sender
>> appropriately by reply e-mail, and then delete it. Thank you very much.
>>
>>
>>
>> _______________________________________________
>> Wrf-users mailing list
>> Wrf-users at ucar.edu
>> http://mailman.ucar.edu/mailman/listinfo/wrf-users
>>
>>
>
>
>
>
> _______________________________________________
> Wrf-users mailing list
> Wrf-users at ucar.edu
> http://mailman.ucar.edu/mailman/listinfo/wrf-users
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mailman.ucar.edu/pipermail/wrf-users/attachments/20160724/64b8f65b/attachment-0001.html 
-------------- next part --------------
A non-text attachment was scrubbed...
Name: image001.png
Type: image/png
Size: 6222 bytes
Desc: not available
Url : http://mailman.ucar.edu/pipermail/wrf-users/attachments/20160724/64b8f65b/attachment-0001.png