Last Updated: 03/19/2025
GEMSOR Model Updates
March 2025
The GEMSOR (Global Empirical Model of Sporadic-E Occurrence Rates) version 1 model is now available to the community through the CCMC instant-Run (IR) service.
The GEMSOR provides occurrence rates (ORs) of blanketing sporadic-E with intensities of fbEs >= 3 MHz. ORs are estimated from a combination of ionosonde & GNSS radio occultation observations, with a Karhunen–Loéve Expansion (KLE) used to improve temporal resolution.
