Why is there a sunset glow in the east

Sunset appears in the east because the weather in the upper reaches of the west turns fine or the clouds split, and the sun shines from the west to the east. It indicates that the rain clouds are about to move eastward or dissipate; At the same time, the temperature gradually decreases in the evening, the atmosphere tends to be stable, and the weather will improve.

Sunset refers to the rosy clouds that appear on the horizon around sunset in the evening. Formation principle: the scattering of light by air. When sunlight enters the atmosphere, it will scatter when it meets atmospheric molecules and particles suspended in the atmosphere. These atmospheric molecules and particles themselves do not emit light, but because they scatter sunlight, each atmospheric molecule forms a scattered light source.