The equatorial electrojet (EEJ) is an intense current jet flowing in the upper atmosphere around 100 km.  This is a unique phenomenon that occurs at only a few kilometers in height (e.g., 105 – 110 km) and with a horizontal (North-South) width of a few hundred kilometers (e.g., ~600 km) centered on the geomagnetic equator.  This important geophysical phenomenon gives more insights into the equatorial ionospheric electrodynamical processes that have various impacts on satellite orbital dynamics, Global Positioning Systems and other satellite communication links, electrical power grids, etc. This study develops a new empirical model to predict the diurnal, seasonal, and solar activity variations in the intensity of this unique current system over the Indian longitude sector.
For more details see  
Tulasi Ram, S., Ankita, M., Nilam, B., Gurubaran, S., Nair, M., Seemala, G. K., et al. (2024). Empirical model of Equatorial ElectroJet (EEJ) using long-term observations from the Indian sector. Space Weather, 22, e2024SW003988. https://doi.org/10.1029/2024SW003988