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Charnock parameter not set in ST6 #1307

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stefanzieger opened this issue Oct 10, 2024 · 0 comments
Open

Charnock parameter not set in ST6 #1307

stefanzieger opened this issue Oct 10, 2024 · 0 comments
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@stefanzieger
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stefanzieger commented Oct 10, 2024 •
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Describe the bug
Output field variable CHA is zero when using ST6 source terms.

To Reproduce

bash ./bin/run_test -f -o netcdf -s ST6 -w ST6 ../model ww3_ts1
ncdump -v cha ww3_ts1/ST6/ww3.196806.nc

Expected behavior
cha = 0.0095, ....
@stefanzieger stefanzieger added the bug Something isn't working label Oct 10, 2024
stefanzieger added a commit to stefanzieger/WW3 that referenced this issue Oct 11, 2024
@stefanzieger
Charnock parameter not set in ST6 NOAA-EMC#1307
3780f17 
Functional type is after Janssen (1991):
   CHARN = AHAT / SQRT(1-TAU_WAV/TAU)

Changes
-------
 [x] Compute Charnock parameter in subroutine LFACTOR.
 [x] Add minimum Charock coefficient SIN6AHAT to
     namelist SIN6 (Eqv. to WAM-type ALPHA0).
 [x] Regression test `ww3_ts1` succeeded (output
     changed for ST6 gridded output).
ToDo
----
 [ ] Try alternatives w/ dynamically calculated AHAT.
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