Outputting only U,V wind speed data at iso-pressure level

[dakyoung]

Hello.

I would like to print out the U, V of the isobaric level using WRF.
ex) A total of 25 iso-pressure levels 201300, 200100, 100000, 97500, 95000, 92500...I want to obtain wind speed data U,V as an .nc file

In this case, can I use &diag, auxhist23, &mod_levs?

I am attaching the namelist.wps and namelist.input that I wrote.
I would appreciate it if you could review if it was written as I intended.

I'll be waiting for the reply.
Thank you.

 

[Ming Chen]

You don't need to change anything in namelist.wps.

You only need to activate this option by setting:

p_lev_diag = 1
auxhist23_outname=”wrfpress_d<domain>_<date>”
auxhist23_interval = 60, 60,
frames_per_auxhist23 = 1, 1,

Note that "auxhist23_outname" in your namelist is not correct. Please follow what I give above.

 

[dakyoung]

You don't need to change anything in namelist.wps.

You only need to activate this option by setting:

p_lev_diag = 1
auxhist23_outname=”wrfpress_d<domain>_<date>”
auxhist23_interval = 60, 60,
frames_per_auxhist23 = 1, 1,

Note that "auxhist23_outname" in your namelist is not correct. Please follow what I give above.

Thanks for your reply.

As you suggested, I modified the namelist.wps, namelist.input file and ran the ./wrf.exe, but there is no wrfpress_d01_2022-05-05_00:00 file
There are only wrfout_d01_2022-05_00:00 and wrfout_d01_2022-05_01:00:00.

There should be a file of wrfpress_d01_2022-05-05_00:00:00 in ../test/em_real/, right?

I will attach the revised namelist.wps, namelist.input. Can you go over it?

Thank you.

 

[dakyoung]

I still haven't found a solution.
Is there anyone who can help me?

 

[Ming Chen]

In your namelist.inpput, you set

auxhist23_outname = "wrfpress_d01_2022-05-05_00:00:00"

This is not correct. Please set it to

auxhist23_outname=”wrfpress_d<domain>_<date>”

 

[dakyoung]

Thanks! Following your solution, I got a wrfpress file.
Does the wrfpress file generated by this output have only wind speed data? Or is it necessary to extract wind speed data using ncl or something else?

 

[Ming Chen]

No. The file should contain other variables like temperature and geopotential height etc.
You can look at the data by
ncdump -h wrfpress