Temporal Coherence Index (CRCT v1.2): Empirical Validation Against Geomagnetic Disturbance Levels in Historical Solar-Terrestrial Events

This dataset presents an empirical validation of the Temporal Coherence Index (CRCT v1.2), a composite indicator based on multi-cycle weighted superposition, applied to 8 historical solar-terrestrial events. The index assigns a Temporal Coherence value (C_t) to each event using a hypothetical multi-cycle framework. These C_t values are correlated with real observed geomagnetic indices: - Pearson correlation (aa_mean vs C_t): 0.808- Spearman correlation (aa_mean vs C_t): 0.825- Pearson correlation (Kp_max vs C_t): 0.867 Results show strong positive correlations, indicating that the CRCT index effectively discriminates between deep solar minima (low disturbance) and extreme geomagnetic storms (high disturbance) using established historical data. Input data:- 8 well-documented events: Maunder-like Minimum, Dalton Minimum, Gleissberg Minimum, 2008–2009 Minimum, 2019–2020 Minimum, Carrington Event (1859), May 1989 storm, May 2024 storm.- Geomagnetic indices: aa (mean) and Kp (maximum) from standard databases. Output:- Full table with event name, observed indices, type, and CRCT-derived C_t.- Correlation analysis and scatter plot visualization (attached as PNG).- Complete Python code for full reproducibility. This validation complements previous applications of CRCT to exoplanet habitability ranking (DOI: 10.5281/zenodo.18102908) and Martian site prioritization, demonstrating consistency with real geophysical observations on Earth. The method is fully reproducible in Python (code provided as supplementary file).LicenciaCreative Commons Attribution 4.0 International (CC BY 4.0)