The profile of the ionosphere is highly variable, changing constantly on timescales of minutes, hours, days, seasons, and years. This profile becomes even more complex near Earth's magnetic poles, where the nearly vertical alignment and intensity of Earth's magnetic field can cause physical effects like the aurora.
The profile of the ionosphere is highly variable changing constantly on timescales of minutes hours days seasons and years This profile becomes even more complex near Earth's magnetic poles where the nearly vertical alignment and intensity of Earth's magnetic field can cause physical effects like the aurora