What is the scientific basis for "the sunset travels a thousand miles, but the morning glow never leaves home"?

In the summer morning, the low-altitude air is stable and there is little dust. If there is a bright red cloud at that time, it is called morning cloud. This means that there are many water droplets and clouds in the low altitude in the east. As the sun rises, thermal convection gradually develops towards the flat ground, the clouds will gradually become denser, bad weather will gradually approach, and the local weather will become worse and worse. This is the "early morning" In the evening, due to the heating of the sun, the temperature is higher, and there is generally not a lot of moisture in the low-altitude atmosphere, but dust may be concentrated in the lower levels due to weakened convection. Therefore, if a bright sunset glow appears, it means that the sunset glow is mainly caused by the scattering of sunlight by dry particles such as dust, indicating that the weather in the west is relatively dry. According to the law of airflow moving from west to east, the local weather will not turn bad in the future, so there is a saying that "the sunset travels a thousand miles".

Of course, "If you don't go out in the morning glow, you will travel thousands of miles in the sunset" is a general rule, and there are exceptions. For example, when the sun has fallen below the horizon and the rays of light on the horizon should disappear, because there are clouds below the horizon, the rays of light below the horizon are reflected by the bottom of the clouds, but they can appear carmine red. The more impurities in the air, the lower the sun's rays. The color is closer to carmine. This indicates that there are clouds under the western horizon and the air is very humid and turbid, indicating that the weather will deteriorate. Therefore, there is also a saying that "when the sun goes dark, there is wind even when there is no rain".

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