How Morning Fog Forms Foggy in the morning and why it is often good weather

Morning fog is water vapor.

Colder air is encountered in the air, forming a mixture of small particles of snow and rain. In other words, fog is the condensation of water vapor in the air near the ground. There are two basic conditions for the formation of fog, one is that the water vapor content in the air near the ground is abundant, and the other is that the ground air temperature is low.

Day and night alternate between hot and cold, and water vapor condenses into water droplets.

The water vapor in the air liquefies into small droplets when cold and floats in the air.

Water vapor condenses into water when it meets cold air.

Fog occurs on winter mornings, and the weather on this day is generally clear. This is because the sun hits the ground during the day, and a lot of heat accumulates on the ground, and due to the evaporation of water, the warmer air can also hold more water vapor, so there is more water vapor in the air.

As soon as the sun goes down, the heat begins to dissipate into the air, and the temperature of the air close to the ground decreases, and the better the weather, the fewer clouds there are in the sky, and the heat from the ground is not hindered in any way, and the faster it is dissipated, the lower the air temperature will be.

In the second half of the night and in the morning, the temperature of the air on the ground has dropped very low, and at this time, even indoors, we can easily feel much colder than in the first half of the night.

When the temperature of the air near the ground decreases, the water vapor in the air exceeds the saturated state, and the excess water vapor condenses into fine water droplets, which are distributed at low altitudes, and this fog is usually produced near the center of high pressure, so when this kind of fog appears, although the morning is thick with fog, as long as the sun comes out and disperses the fog, there will be clear weather.

The conditions for the formation of fog are cooling, humidification, and condensation nuclei to increase the water vapor content.

A type of fog is formed by radiative cooling, and most of the fog occurs in clear weather, light winds, and near the surface water vapor is relatively abundant and stable, or there is a temperature inversion.

The presence of night and early morning is meteorologically called radiation fog;

The other is the fog formed by the horizontal movement of warm and moist air, passing through the cold ground or water surface, and the water vapor in the air is gradually liquefied by cold, which is called advection fog in meteorology;

Sometimes fog formed by both causes is called mixed fog. It can be seen that these conditions can be met in late autumn and early winter, especially in the morning of late autumn and early winter.

Most of the fog we generally see is a clear and cloudless sky at night, and the ground is strongly cooled, so that the water vapor in the air near the surface condenses into small water droplets and is suspended in the air to form fog, that is, radiation fog. Ten fogs and nine sunny refers to this kind of fog. The conditions required for the formation of such fog are sufficient water vapour in the lower air, strong radiation, and light winds.

The areas that meet these three conditions are generally under the control of cold high pressure or the weather suddenly clears after rain under the control of weak high pressure, and the weather under the control of these two weather systems is mostly good weather. Most of this fog occurs at night or in the morning, and after the sun rises, due to the strong warming of the ground and the destruction of the near-surface inversion layer, the fog dissipates and the sky is still fine. That's what it means.

However, when there is advection fog, steam fog, etc., it is not necessarily sunny weather.

Foggy in the morning means that the humid air contains many small water droplets, and the moist air is saturated moist air when the temperature is increasing.

After the gradual rise, the small water droplets gradually vaporize, so it is often good weather.

Generally, there is a lot of fog in the morning in autumn and winter, and it is generally very cold after the fog, and the temperature is relatively high during the day, and the air can hold more water vapor. This is the morning fog, the temperature will rise after the fog, the fog at night, is due to the temperature drop, the air is quite humid, when it cools to a certain extent, a part of the water vapor in the air will condense out, into a lot of small water droplets, suspended in the air layer near the ground, so the fog is more for a long time, and the temperature will drop after that.

The specific knowledge is that saturation is reached when the water vapor contained in the air reaches its maximum. And the higher the temperature, the more water vapor can be contained in the air. 1 cubic meter of air, when the air temperature is 4, the maximum amount of water vapor that can be contained is grams; When the air temperature is 20, the maximum amount of water vapor that can be contained in 1 cubic meter of air is grams.

If the air contains more water vapor than the amount of saturated water vapor at a certain temperature, the excess water vapor will condense, and when enough water is enough to combine with the tiny dust particles in the air, and the water molecules themselves will stick to each other, becoming small water droplets or ice crystals. The amount of water vapor in the air exceeds the saturation amount and condenses into water droplets, which is mainly caused by the drop in air temperature.

If the ground heat is lost, the temperature drops, and the air is quite humid, then when it cools to a certain extent, a part of the water vapor in the air will condense and become many small water droplets, suspended in the air layer near the ground, which is fog. Both it and clouds are caused by a drop in temperature, and fog can actually also be said to be clouds close to the ground.

The temperature is relatively high during the day, and the air can hold more water vapor. But at night, the temperature drops, and the ability of the air to hold water vapor decreases, so some of the water vapor condenses into fog. Especially in autumn and winter, due to the long nights and the chance of cloudless wind, the ground heat dissipation is more rapid than in summer, so that the ground temperature drops sharply, so that the water vapor in the air near the ground is easy to reach saturation in the second half of the night to the morning and condense into small water droplets, forming fog.

In autumn and winter, the morning temperature is the lowest, and the fog is at its thickest.

The conditions for the formation of fog are cooling and humidification, which increases the water vapor content. This is formed by radiative cooling, which mostly occurs at night and early in the morning when it is clear, breezy, and the water vapor near the surface is relatively abundant and stable, or there is a temperature inversion, which is called radiation fog in meteorology; the other is the fog formed by the horizontal movement of warm and humid air, passing through the cold ground or water surface, and gradually cooling, which is called advection fog in meteorology; Sometimes fog formed by both causes is called mixed fog. It can be seen that those who have these conditions are in late autumn and early winter, especially in the morning of late autumn and early winter.

Here's an example of fill-in-the-blank:

Hazy morning mist.

Ethereal morning mist.

Heavy morning mist.

White morning mist.

Hazy morning mist.

Thin morning mist.

Thick morning fog.

Reasons: 1. Formed by radiative cooling, most of which appear at night and early in the morning when it is clear, breezy, and near-ground water vapor is relatively abundant and stable, or there is a temperature inversion, which is called radiation fog in meteorology;

2. The warm and humid air moves horizontally, passes through the cold ground or water surface, and the water vapor in the air is gradually liquefied by the cold and forms the fog, which is called advection fog in meteorology;

3. Sometimes the fog formed by both two reasons is called mixed fog. It can be seen that what can meet the conditions of this collapse is late autumn and early winter, especially in the morning of late autumn and early winter.

Abstract:Halfway through, a round of red sun slowly rose from the east, the dense fog was torn off layer by layer like cotton wool, and gradually turned into a layer of fine yarn, and the distant scenery began to appear hazy; Looking up, the sky is full of red clouds, the sea is full of golden waves, and the red sun is like a furnace of boiling molten steel, spurting out, crystal dazzling, what a beautiful picture! ......

In the morning, I woke up early, and I used to look out, but I couldn't see anything clearly. I hurriedly put on my clothes and opened the window, only to see a thick fog wafting all around. A breeze blows,The fog swirled and crawled slowly through the air like snails; After a while, it turned into a conch ......The fog is really like a monster.

It was time for school, and I walked downstairs and was immediately surrounded by a thick fogIt's like falling into a bottle, only a piece can be seen underfoot. I walked cautiously along the side of the road, and suddenly, I heard something familiar'The sound of talking, the footsteps behind me are getting closer and closer, but I can't see who it is, until the person walked up to me, I realized that it was Zhao Liang who also went to school.

Halfway through, a red sun slowly rose from the east, and the dense fog was torn off layer by layer like cotton wool, gradually turning into a layer of fine yarn, and the distant scenery began to appear dimly;Looking up, the sky is full of red clouds, the sea is full of golden waves, and the red sun is like a furnace of boiling molten steel, spurting out, crystal dazzling, what a beautiful picture! ......

Fog is not welcome in normal times, but if you look at it quietly, the morning fog is really a masterpiece of nature, and it makes people feel very interesting.