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[FIX] Standardise sigma coords on rapid to be <1000#126

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eleanorfrajka merged 3 commits intomainfrom
fix/rapid-sigma-coords
Feb 22, 2026
Merged

[FIX] Standardise sigma coords on rapid to be <1000#126
eleanorfrajka merged 3 commits intomainfrom
fix/rapid-sigma-coords

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@eleanorfrajka eleanorfrajka commented Feb 13, 2026

Description:

RAPID's "meridional_transports.nc" file uses sigma values which are not anomalies. Subtracting 1000 to be consistent with OSNAP.

Also update to latest version of FBC data.

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Pull request overview

This pull request standardizes sigma coordinate values in RAPID's "meridional_transports.nc" file to use potential density anomalies (values < 100) instead of absolute potential density values (values > 1000), bringing them into consistency with OSNAP data formatting conventions.

Changes:

  • Added coordinate transformation logic to subtract 1000 from sigma0 and sigma2 values when they exceed 100
  • Updated documentation to reflect the new coordinate value ranges (sigma0: 22.00-28.00, sigma2: 30.00-37.15)

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 5 comments.

File Description
amocatlas/data_sources/rapid26n.py Implements sigma coordinate transformation in the RAPID data reader for meridional_transports.nc file
docs/source/reports/rapid_report.rst Updates coordinate value ranges in documentation to reflect the transformation from absolute density to anomaly values

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@eleanorfrajka eleanorfrajka merged commit 9250d3e into main Feb 22, 2026
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@eleanorfrajka eleanorfrajka deleted the fix/rapid-sigma-coords branch February 23, 2026 05:53
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2 participants