sporadic-E layer
type: Concept
broader: E-region
preferred label: لایه‌های پراکنده E @fa

E-region
type: Concept
alternative label: E-layer
broader: ionosphere
narrower: sporadic-E layer
preferred label: منطقه-ای. @fa

ionosphere
type: Concept
narrower: E-region
preferred label: یون‌سپهر @fa