Representative scripts and diagnostic data for Revisiting the Desroziers Diagnostic Across Gaussian and Non-Gaussian Correlation Regimes

This record contains representative scripts and selected diagnostic data associated with the manuscript “Revisiting the Desroziers Diagnostic Across Gaussian and Non-Gaussian Correlation Regimes”. The archive illustrates the observation-error generation procedure, Desroziers diagnostic calculations, distributional diagnostics, and selected correlation/statistical summaries used during manuscript revision. It is intended as a lightweight reproducibility and documentation package rather than a complete archive of all intermediate numerical experiment outputs.