Analysis-Ready Ionospheric and Geomagnetic Dataset for Pre-sunrise EPB Events During the May 2024 Geomagnetic Storm

This dataset contains ionospheric and geomagnetic observations used to analyze a pre-sunrise equatorial plasma bubble (EPB) event occurring during 10–12 May 2024. The data are compiled from multiple sources and instruments to support reproducible analysis of ionospheric irregularities and their geomagnetic drivers. The dataset consists of five main data groups: Geomagnetic Data (10–12 May 2024)Interplanetary Magnetic Field (IMF) parameters, AE index, and SYM-H index are provided to characterize geomagnetic conditions during the study period. ROTI Map Data (11 May 2024)Rate of TEC Index (ROTI) maps derived from GNSS observations are included to identify and visualize ionospheric irregularities associated with plasma bubble activity. TEC Map Data (11 May 2024)Global or regional Total Electron Content (TEC) maps are provided to describe large-scale ionospheric electron density variations during the EPB event. Equatorial Electrojet (EEJ) Data (10–12 May 2024)EEJ-related data are included to examine electrodynamic conditions in the equatorial ionosphere. Ionosonde Data and Ionogram Scaling (11–12 May 2024)Manually scaled ionogram parameters from Bac Lieu (Vietnam) and Chumphon (Thailand) ionosonde stations are provided to investigate vertical ionospheric structure and F-region dynamics. All data are organized into clearly labeled folders within a single compressed archive and accompanied by a README file describing the directory structure, temporal coverage, and basic usage notes. This dataset is intended to support transparency, reproducibility, and future comparative studies of equatorial ionospheric disturbances. DOI: 10.5281/zenodo.17971311