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WRF 4.1.5 spectral nudging produces identical results to no-nudging run

hkjin

New member
Hello,
I am trying to use spectral nudging with WRF version 4.1.5. The total simulation period is one day, and I plan to apply spectral nudging only at 12 UTC.
I modified the &fdda section in namelist.input to enable spectral nudging, but the WRF outputs are the same as the case without nudging. It is unclear whether spectral nudging is actually taking effect.

Could you please advise which settings I should modify or what I should check to make spectral nudging work properly?
I have attached my namelist.input, log files, and NetCDF attributes for reference.
Thank you in advance.
 

Attachments

  • input.wrfbdy_d01_netcdf.txt
    32.5 KB · Views: 0
  • namelist.input
    3.1 KB · Views: 0
  • input.wrffdda_d01_netcdf.txt
    5.8 KB · Views: 0
  • input.wrflowinp_d01_netcdf.txt
    3.9 KB · Views: 0
  • input.wrfrst_netcdf.txt
    141.6 KB · Views: 0
  • output.wrfout_netcdf.txt
    48.7 KB · Views: 0
  • output.wrfrst_netcdf.txt
    147 KB · Views: 0
  • rsl.error.0000
    241.2 KB · Views: 0
  • namelist.output.txt
    83.7 KB · Views: 0
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