Hybrid axes support

[rbeucher]

work in progress

[codecov]

Codecov Report

❌ Patch coverage is 40.68966% with 86 lines in your changes missing coverage. Please review.
✅ Project coverage is 61.06%. Comparing base (1460e7e) to head (b5f85cb).
⚠️ Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
src/access_moppy/derivations/calc_utils.py	6.25%	30 Missing ⚠️
src/access_moppy/base.py	6.45%	29 Missing ⚠️
src/access_moppy/vocabulary_processors.py	63.63%	16 Missing ⚠️
src/access_moppy/atmosphere.py	78.57%	6 Missing ⚠️
src/access_moppy/derivations/calc_atmos.py	37.50%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #176      +/-   ##
==========================================
- Coverage   62.24%   61.06%   -1.18%     
==========================================
  Files          19       19              
  Lines        2961     3054      +93     
==========================================
+ Hits         1843     1865      +22     
- Misses       1118     1189      +71     

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[rhaegar325]

Whole update looks good, working on further test on it, and after that I think it's ready to be merged

[rhaegar325]

Those data hasn't been upload yet with this branch.

[rhaegar325]

Review: Integration Test Failures

Thanks for adding comprehensive integration tests! The test infrastructure looks solid, but I've identified two critical issues that need to be addressed before this can be merged.

Issue 1: Coordinate Renaming Conflict (huss variable)

Location: atmosphere.py → select_and_process_variables()

Error:

ValueError: the new name 'lat' conflicts

Root Cause:
The dataset contains both lat (145 points) and lat_v (144 points) as separate variables. When the code attempts to rename lat_v → lat, it creates a naming conflict because lat already exists.

Impact: Affects all variables that use staggered grids (V-grid for atmosphere).

Alternatively, we might need to select the appropriate coordinate based on the variable's grid (U-grid vs V-grid) before attempting the rename.

---

Issue 2: Missing Required Variable (mrso calculation)

Location: derivations/__init__.py → evaluate_expression()

Error:

KeyError: 'depth'

Root Cause:
The calculation for mrso (total soil moisture content) references a depth variable that doesn't exist in the input dataset. The dataset contains soil_model_level_number but not the actual depth values in meters.

Impact: Affects all land variables requiring soil depth information.

Context from logs:

fld_s08i223: data variable → time:1, soil_model_level_number:6, lat:145, lon:192

Might be some issue with the mapping, I will look into those

[rbeucher]

I think the mapping for huss and hus was wrong...I fixed it

[rbeucher]

I have fixed huss and mrso.