initialize field-specific vertical extent for target data in fixed sp…

[MJHarrison-GFDL]

Fixes issue for fixed sponge cases introduced by #1308

[codecov]

Codecov Report

Merging #1317 (2fac63d) into dev/gfdl (a582bff) will decrease coverage by 0.00%.
The diff coverage is 33.33%.

@@             Coverage Diff              @@
##           dev/gfdl    #1317      +/-   ##
============================================
- Coverage     45.77%   45.77%   -0.01%     
============================================
  Files           234      234              
  Lines         72513    72514       +1     
============================================
- Hits          33193    33192       -1     
- Misses        39320    39322       +2     

Impacted Files	Coverage Δ
src/parameterizations/vertical/MOM_ALE_sponge.F90	26.56% <0.00%> (-0.05%)	⬇️
src/initialization/MOM_state_initialization.F90	29.88% <50.00%> (-0.09%)	⬇️

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a582bff...0957fa1. Read the comment docs.

[angus-g]

Maybe also for this fixup: it looks like h_col is never set when applying the sponge on tracer fields in the following block: https://github.com/NOAA-GFDL/MOM6/blob/b5158bb0705d098f6594abbd10250edcba23b316/src/parameterizations/vertical/MOM_ALE_sponge.F90#L948-L968

[Hallberg-NOAA]

I agree with these changes, and they have passed both the TC testing and the pipeline testing at
https://gitlab.gfdl.noaa.gov/ogrp/MOM6/-/pipelines/12015 .