MNT: introduce pressure unit conversion when using forecast/reanalysis/ensemble data

[Lucas-Prates]

Pull request type

• Code maintenance (refactoring, formatting, tests)

Checklist

• Tests for the changes have been added
• Docs have been reviewed and added / updated
• Lint (black rocketpy/ tests/) has passed locally
• All tests (pytest tests -m slow --runslow) have passed locally
• CHANGELOG.md has been updated (if relevant)

Current behavior

When set_atmospheric_model is used with the argument file as "forecast", "reanalysis", or "ensemble", the data can be fetched with different pressure units. For instance, when using "forecast" with "GFS", it seem to be 100x higher than they should, as the figures indicate, so they probably use Pa. However, it seems that ERA5 data is in hPa, so the conversion is needed.

New behavior

We previously had a hard conversion from hPa to Pa (100x factor). It was replaced with an argument that allows the user to specify the conversion factor.

It can be considered a breaking change because users who used "reanalysis" with ERA5 will now need to specify that their data is in "hPa", otherwise their pressure levels will be 100x smaller than they should

Breaking change

• Yes

Additional information

The following figure shows the incorrect pressure values using forecast.

As the figure below indicates, the values are 100x higher than the normal range of values

[codecov]

Codecov Report

❌ Patch coverage is 85.71429% with 3 lines in your changes missing coverage. Please review.
✅ Project coverage is 81.11%. Comparing base (9cf3dd4) to head (476e3a8).
⚠️ Report is 72 commits behind head on develop.

Files with missing lines	Patch %	Lines
rocketpy/environment/environment.py	84.21%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #955      +/-   ##
===========================================
+ Coverage    80.27%   81.11%   +0.84%     
===========================================
  Files          104      113       +9     
  Lines        12769    14555    +1786     
===========================================
+ Hits         10250    11807    +1557     
- Misses        2519     2748     +229     

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