Surface data skipped in wrfvar_output

[Kpeter]

I would like to ask your assistance for my 3D-VAR data assimilation experiment. All elements of my experiment seem ok, the log files tell appropriate work, and wrfvar_output generated correctly.
I have checked the increments (difference between first guess and 3D-VAR output file) and they also seem correct on higher level. BUT on surface level something may be wrong.

Considering T2m there is slight and singular increment field, moreover U,V fields are identical in both files (no increments), however Jo calculation for synop_u and synop_v appears in log files:

jo_synop 0.211335854820E+03
jo%synop_u 0.107599699190E+03
jo%synop_v 0.186768876058E+01
jo%synop_t 0.101610705821E+03
jo%synop_p 0.257418691903E+00
jo%synop_q 0.342357448447E-03
jo_airep 0.362222449565E+02
jo%airep_u 0.113257960778E+02
jo%airep_v 0.000000000000E+00
jo%airep_t 0.248964488787E+02
jo%airep_q 0.000000000000E+00
jo_profiler 0.346260589824E+02
jo%profiler_u 0.261924596285E+02
jo%profiler_v 0.843359935392E+01

My first idea was that surface observation assimilation results are not written out, but I did not find this option in namelists. What could be wrong?
I have put FG, namelist, and output files together:

https://drive.google.com/file/d/1Sh70hrV1JfRt9BuD-i00vMuqQb5bWQzq/view?usp=drive_web


Thank you for your help in advance,
Péter

 

[RCarpenter]

I am having the same issue (perhaps). Fields like T2 and U10 are not being updated. But the model levels seem to be reasonably updated. How can I get the derived near-surface fields to update?

 

[hclin2018]

Please see the description about update_sfcdiags in var/README.namelist.

It is better to let the model diagnose and output those surface variables from the first couple time steps.
For example, in WRF namelist.input,
&time_control
auxhist6_outname = "./surface_d<domain>_<date>"
iofields_filename = "./surface_out.txt"
io_form_auxhist6 = 2
auxhist6_begin_m = 3 ! set a proper value according to your time step
auxhist6_end_m = 6 ! set a proper value according to your time step

Edit surface_out.txt file to include the following one line.

+:h:6:t2,q2,u10,v10