The files in this data set were obtained from the Global Ionospheric Specification (GIS) derived from COSMIC-2 radio occultation data along with data from other sources. The GIS is normally available
Slant absolute total electron content (TEC) is observed by the Formosa Satellite-7/Constellation Observing System for Meteorology, Ionosphere, and Climate-2...
The CANOPUS All-Sky Imagers (ASI) comprosed a ground-based instrument array for remote sensing the high latitude ionosphere during the ISTP/GGS program. The CANOPUS program has been superseded by the
