In order of increasing heights and intensities, what are the layers of the ionosphere?

The layers of the ionosphere are classified based on their altitude and the intensity of ionization. Starting from the lowest layer to the highest, they are D, E, F1, and F2.

The D layer is closest to Earth, typically lying between about 30 to 90 kilometers above the surface. It has the lowest ionization levels and primarily affects radio waves during the day, reflecting lower frequency signals.

Above the D layer is the E layer, which ranges from around 90 to 150 kilometers. The E layer has a higher ionization level than the D layer and can reflect medium frequency signals.

The F layer, which is subdivided into two parts, F1 and F2, is situated above E and ranges from approximately 150 kilometers up to 800 kilometers. The F1 layer is typically between 150 to 300 kilometers in altitude, while the F2 layer extends beyond 300 kilometers. The F layer is the most highly ionized part of the ionosphere, especially during periods of solar activity, and is significant for long-distance radio communications.

Ordering these layers by increasing heights and intensities clearly aligns with the D, E, F1, and F2 arrangement, confirming that the correct sequence begins with the