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*Non-Boussinesq interface_filter #418

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Hallberg-NOAA
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Refactored interface_filter when in non-Boussinesq mode to avoid any dependencies on the Boussinesq reference density, and to translate the volume streamfunction into the mass streamfunction using an appropriately defined in-situ density averaged to the interfaces at velocity points. This form is similar to the one that is used in thickness_diffuse.

No public interfaces are changed, and all answers are bitwise identical in Boussinesq or semiBoussinesq mode, but they will change in non-Boussinesq mode cases that use the interface filter.

  Refactored interface_filter when in non-Boussinesq mode to avoid any
dependencies on the Boussinesq reference density, and to translate the volume
streamfunction into the mass streamfunction using an appropriately defined
in-situ density averaged to the interfaces at velocity points.  This form is
similar to the one that is used in thickness_diffuse.

  No public interfaces are changed, and all answers are bitwise identical in
Boussinesq or semiBoussinesq mode, but they will change in non-Boussinesq mode
cases that use the interface filter.
@Hallberg-NOAA Hallberg-NOAA added the answer-changing A change in results (actual or potential) label Jul 21, 2023
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codecov bot commented Jul 21, 2023

Codecov Report

Merging #418 (320f33b) into dev/gfdl (c803904) will decrease coverage by 0.01%.
The diff coverage is 0.00%.

❗ Current head 320f33b differs from pull request most recent head 6ef0f80. Consider uploading reports for the commit 6ef0f80 to get more accurate results

@@             Coverage Diff              @@
##           dev/gfdl     #418      +/-   ##
============================================
- Coverage     38.06%   38.06%   -0.01%     
============================================
  Files           269      269              
  Lines         77206    77215       +9     
  Branches      14257    14260       +3     
============================================
+ Hits          29387    29390       +3     
- Misses        42496    42501       +5     
- Partials       5323     5324       +1     
Files Changed Coverage Δ
...parameterizations/lateral/MOM_interface_filter.F90 0.00% <0.00%> (ø)

... and 1 file with indirect coverage changes

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@StephenGriffies StephenGriffies left a comment

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Seems fine. I see no red flags.

@marshallward
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Gaea regression: https://gitlab.gfdl.noaa.gov/ogrp/MOM6/-/pipelines/20317 ✔️

@marshallward marshallward merged commit a808881 into NOAA-GFDL:dev/gfdl Aug 15, 2023
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@Hallberg-NOAA Hallberg-NOAA deleted the nonBous_interface_filter branch September 27, 2023 16:31
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3 participants