Weather forecast in dongzhi county, Anhui Province

Stay indoors at sunrise and travel thousands of miles at sunset. Morning glow and sunset glow here refer to the colorful phenomenon that the sun is scattered by the atmosphere around sunrise and sunset and appears in the sky and clouds.

At sunrise and sunset, colorful clouds occasionally appear on the horizon. At sunrise and sunset, the angle of sunlight is low, and the light passes through the thick atmosphere and is scattered by water vapor, water droplets and dust in the air. Some short-wavelength blue light, blue light and purple light in sunlight will be scattered by the atmosphere, only red light, orange light and yellow light will penetrate the atmosphere, and the sky will appear red.

At mid-latitude, wind and rain often move from west to east. The red halo around sunrise indicates that there is already a lot of water vapor in the atmosphere, clouds have begun to invade from the west, and the weather will turn rainy. So? The morning glow never dies? .

Seeing the sunset glow at dusk shows that the weather in the upper reaches of the west has turned fine, and the sunlight can be scattered through the atmosphere and reflected by the clouds, indicating that the rain clouds above have moved eastward and the weather will turn fine. So what? Twilight trip to Wan Li Road? .

However, in real life, the relationship between smog and weather is quite complicated. An example is that sometimes there will be a sunset glow on a sunny day after rain. In addition, especially in low latitudes (such as Hong Kong), sometimes the weather system moves from east to west (including typhoons) instead of from west to east. Therefore, we can't fully understand the weather changes only by summer light, and we need to make a comprehensive analysis with other meteorological elements, which will help to forecast the weather more accurately.

In summer morning, the air at low altitude is stable and there is little dust. If there was a bright red glow at that time, it was called sunrise. This means that there are many water drops and clouds in the eastern low altitude. As the sun rises, the thermal convection will gradually develop to the flat, the clouds will gradually become dense, the bad weather will gradually approach, and the local weather will get worse and worse. What is that? Don't go out in the morning Reason; At night, due to the sunshine heating during the day, the temperature is high, and there is generally not much water vapor in the low-altitude atmosphere, but due to the weakening of convection, dust may be concentrated in the lower level in large quantities. Therefore, if there is a bright sunset glow, it means that the sunset glow is mainly caused by the scattering of solar light by dry particles such as dust, which means 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 get worse in the future, so there are? A thousand miles in the sunset? Statement.

The crimson morning glow indicates that there are clouds in the western sky, and the morning clouds are mainly caused by the system weather. In the future, as the weather system moves eastward, the local area will gradually be affected by it, and the weather will turn rainy. The crimson sunset shows that there are no clouds in the western sky, so the sun can directly shine on the eastern sky, while the clouds in the eastern sky will only get farther and farther away from the local area as time goes by, and will not affect the local area, while the sunny days in the west will gradually move with time, and the weather will be fine.

On the other hand, the morning glow shows that the sky is cloudy and the weather is not very stable. When the sun rises, the thermal effect will be enhanced, the convection will develop further, and the clouds will develop further, which is easy to cause rainy weather. On the contrary, at night, as the sun goes down, the air stratification gradually returns to stability, the convection weakens, the clouds originally generated during the day will also dissipate, and the weather is generally fine. Visible? Don't go out at sunrise, but go to Wan Li Road at sunset? There is a certain scientific truth.