Processed Arctic Sea Ice Data, Figures, and Tables (1979–2016)

This Zenodo record contains the processed data, figures, and tables supporting the analysis presented in the associated manuscript on long-term Arctic sea ice extent variability (1979–2016). The contents are organised as follows: Processed data Processed_Arctic_Sea_Ice_Data.xlsxContains monthly Arctic sea ice extent values derived from satellite observations, anomaly calculations relative to a fixed 1979–2000 baseline, 12-month rolling mean diagnostics, and cumulative anomaly time series used in the analysis. Figures Figure_1_Monthly_Sea_Ice_Extent.pdfShows observed monthly Arctic sea ice extent, corresponding monthly anomalies relative to the 1979–2000 baseline, and the 12-month rolling mean anomaly, illustrating seasonal variability and long-term change. Figure_2_Cumulative_Anomalies.pdfDisplays the cumulative sum of monthly Arctic sea ice extent anomalies, highlighting the integrated effect of persistent departures from the historical baseline. Tables Table_1_Summary_Statistics.pdfProvides summary statistics for Arctic sea ice extent and anomaly metrics over the full observational period (1979–2016). Table_2_Period_Comparison.pdfCompares Arctic sea ice extent and anomaly statistics between pre-2000 and post-2000 periods to assess regime-scale change. All figures and tables correspond exactly to those presented in the manuscript. These materials are provided to support transparency, reproducibility, and independent verification of the reported results.