Creating Vtable

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adhityaraar
Posts: 2
Joined: Wed Mar 17, 2021 9:48 am

Creating Vtable

Post by adhityaraar » Wed Mar 17, 2021 10:12 am

Hello.
I already tried to run with the WRF-4.2.2 model (WPS-4.2) successfully with GFS data. However, in my projects, I should use the data from KMA (Korean Meteorological Agency) in order to run the South Korean region. In metgrid.exe, I always get errors. I search in google and found out that the problem was in ungrib.exe, specifically on Vtable.KMA. So I search it here: https://www2.mmm.ucar.edu/wrf/users/dow ... _data.html. but I didn't find it as a file that this report mentioned: http://www.nims.go.kr/_part/downloadFil ... %B6%95.pdf.

So far, I'm still asked KMA to give me Vtable, but if they do not provide it. I want to create Vtable on my own. The truth is, I'm still working on editing Vtable by following others' explanations in one of the forums. But until now, I'm still failed. Any suggestion on how to create Vtable, set up the boundary for initial conditions, and whats data input available?

Hereby I attached my intermediate, ungrib.log, and metgrid.log

Thank you in advance, any kind of reply will help us so much.
Attachments
Intermediate.KMA.txt
(2.58 KiB) Downloaded 16 times
ungrib_KMA.log
(37.27 KiB) Downloaded 15 times
metgrid_KMA.log
(13.14 KiB) Downloaded 15 times

Ming Chen
Posts: 1588
Joined: Mon Apr 23, 2018 9:42 pm

Re: Creating Vtable

Post by Ming Chen » Mon Mar 29, 2021 5:30 pm

Please take a look at the document below, which provides detailed instruction how to create Vtable:

https://www2.mmm.ucar.edu/wrf/users/doc ... _Editing_1

Hope this is helpful.
WRF Help Desk

adhityaraar
Posts: 2
Joined: Wed Mar 17, 2021 9:48 am

Re: Creating Vtable

Post by adhityaraar » Tue Jun 15, 2021 2:17 pm

Thank you for your reply
Yes, I knew how to create the Vtable format, however, Vtables were different in many meteorological data.
I wonder how to specify the data inputs from the grib that is needed for creating the Vtable?

Ming Chen
Posts: 1588
Joined: Mon Apr 23, 2018 9:42 pm

Re: Creating Vtable

Post by Ming Chen » Tue Jun 22, 2021 10:08 pm

Hi,
In the User Guide, it make clear that you need to figure put those parameters that specify the GRIB codes for various meteorological fields. Different data sets may use different GRIB codes for the same field – for example, temperature at upper-air levels has GRIB code 11 in GFS data, but GRIB code 130 in ECMWF data. To find the GRIB code for a field, the g1print.exe and g2print.exe utility program may be used.
WRF Help Desk

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