IONOSPHERIC TEMPORAL-SPATIAL CORRELATION ANALYSIS USING GNSS NETWORKS OVER CHINA

We provide a high-resolution dataset describing spatiotemporal variability in the ionized upper atmosphere over China at finer spatial resolution than conventional global products. It is produced from a ground-based receiver network and geostationary navigation satellites using fixed-geometry observations to resolve spatial gradients. The dataset supports studies of upper-atmosphere coupling within the Earth system and assessment of space-weather impacts on satellite positioning accuracy.