What is the wind like and what does the wind look like?

Wind formation is the result of the movement of air. Wind energy utilization is mainly to convert the kinetic energy that the atmosphere has when it moves into other forms of energy.

Wind is the air that moves horizontally, and the movement of the air is mainly due to the different intensities of solar radiation received by the latitudes of the earth. In the equatorial and low latitudes, the solar altitude angle is large, the sunshine time is long, the solar radiation intensity is strong, the ground and atmosphere receive more heat, and the temperature is higher. In higher latitudes, the solar altitude angle is small, the sunshine hours are short, the ground and atmosphere receive less heat, and the temperature is low. This temperature difference between high and low latitudes forms a pressure gradient between north and south, so that the air moves horizontally, and the wind should blow along the horizontal pressure gradient, that is, vertically and isobars blow from high pressure to low pressure.

The earth is rotating, the force that deflects the horizontal movement of air is called the geostrophic deflection force, which causes the air flow in the northern hemisphere to deflect to the right and the southern hemisphere to the right, so the earth's atmospheric movement is affected by the geostrophic deflection in addition to the pressure gradient force. The real motion of the atmosphere is the result of the combined influence of these two forces.

In fact, the surface wind is not only dominated by these two forces, but also to a large extent by the ocean, the topography, the mountain passes and straits can change the direction of the air movement, but also increase the wind speed, while the hills and mountains rub the wind speed to decrease, and the isolated mountain peak increases the wind speed due to the high altitude. Therefore, the temporal and spatial distribution of wind direction and wind speed is complex.

In winter, the continent is colder than the ocean, and the continental pressure is higher than that of the ocean, and the wind blows from the continent to the ocean. In summer, on the contrary, the continent is hotter than the ocean, and the wind blows inland from the ocean. This kind of wind that changes with the seasons is called the monsoon.

The so-called sea and land breeze is also during the day, when the air flow on the continent is heated and expands to the upper altitude and flows to the ocean, cools and sinks above the ocean, and the air flow over the near-surface ocean blows to the continent to compensate for the updraft of the continent, the low-level wind blows from the ocean to the continent is called the sea breeze, and at night (winter), the opposite is the case, the low-level wind blows from the continent to the ocean, which is called the land breeze.

In mountainous areas, due to heat, the former is called the valley wind, and the latter is called the mountain wind, caused by the heat from the valley to the plain or hillside during the day and from the plain or hillside at night. This is due to the fact that the slope heats up quickly during the day, and the temperature temperature is higher than the air temperature at the same height above the valley, and the warm air on the slope flows from the slope to the top of the valley, and the air from the valley replenishes the lost air along the slope, and the wind blowing from the valley to the slope is called the valley wind. At night, the slopes of the mountains are cooled by radiation, and the cooling rate is faster than the air at the same altitude, and the cold air flows down the slope into the valley, which is called the mountain wind.

In addition, different underlying surfaces also have an impact on the wind, such as cities, forests, ice-covered areas, etc. Smooth ground or ground with little friction increases the wind speed, rough ground decreases the wind speed, etc.

The wind is invisible, but we can sense him.

Agile, erratic, unpredictable.

The formation of wind Wind is the most familiar natural phenomenon, and to understand the formation of wind, it is necessary to understand the movement of the atmosphere that surrounds the earth. The flow of the atmosphere, like the flow of water, is from a place of high pressure to a place of low pressure. Solar energy is exactly what creates the difference in atmospheric pressure.

Because of the angle between the Earth's axis of rotation and the axis of revolution around the Sun, the angle of solar irradiation is different for different places on Earth, and this angle also varies for the same place 365 days a year, so the solar radiation energy received by a certain place on Earth is also constantly changing. The Earth's north and south poles receive less solar radiation energy, so the temperature is low and the air pressure is high; Whereas, the equator receives more heat, has a high temperature, and has low air pressure. In addition, as the earth rotates, there are diurnal variations in temperature and air pressure.

In this way, due to the changes in temperature and pressure on the earth's surface, the air flow will move from high pressure to low pressure in order to transport heat from the tropics to the poles, thus forming winds in different directions and accompanied by different meteorological changes. Ocean currents in the ocean play a similar role. On a global scale, the air currents in the atmosphere are a huge energy transport medium, and the rotation of the Earth further promotes the formation of semi-permanent planetary-scale circulation in the atmosphere.

The direction of movement of the wind on Earth is shown in the diagram below.

Figure: The direction of the movement of the wind on Earth.

The topography and landforms of various parts of the earth will also affect the formation of wind, such as the seaside, due to the large heat capacity of seawater, after receiving solar radiation energy, the surface temperature rises slowly, and the land heat capacity is small, and the temperature rises relatively quickly. As a result, during the day, due to the high temperature of the land air, the air rises, forming a sea and land breeze that blows from the sea surface to the land. On the other hand, at night, the sea cools slowly, the sea surface air temperature is high, and the air rises, forming a land and sea breeze that blows from the land to the sea (see the figure below).

a) Coastal wind protection during the day; (b) Nighttime land and sea breezes.

Schematic diagram of the formation of the sea and land breeze.

In mountainous areas, the sun warms the air in the mountains during the day, and as the hot air rises, the cold air from the valley moves upwards to form the "valley wind". Conversely, at night, the heat in the air is dissipated higher up, the density of the gas increases, and the air moves down the hillside, creating the so-called "mountain wind" (see figure below).

a) "Valley wind" during the day; (b) "Mountain breeze" at night

Schematic diagram of valley wind formation.

1. The characteristics of the wind are: softly silent, quietly invisible, and there is a feeling of cool silk after blowing.

2. Wind is a natural phenomenon caused by the flow of air, which is caused by the heat of solar radiation. Sunlight shines on the earth's surface, causing the surface temperature to rise, and the air on the surface of the earth is heated and expands lightly and rises. When the hot air rises, the cold air at a low temperature flows in laterally, and the rising air cools and becomes heavier and falls, and the air heats up to rise due to the high surface temperature, and the flow of this air generates wind.

3. From a scientific point of view, wind often refers to the horizontal movement component of air, including direction and magnitude, that is, wind direction and speed; But for flight, it also includes the vertical motion component, the so-called vertical or ascending airflow. Gale moves objects in relation to the direction of the object (mass of matter). The speed of the wind is fast.

<> gentle wind, cool wind, biting wind, cold wind, fickle wind, bitter wind, violent wind, soft wind, roaring wind, howling wind, etc.

1. WarmBreeze.

2. FreshBreeze.

3. WarmBreeze.

4. RefreshingBreeze.

5. GentleBreeze.

一、和煦: [ hé xù ]

Basic explanation: Warm: spring breeze. of the sun.

2. Fresh: [ qīng xīn ].

Basic explanation. 1. Refreshing and fresh: just after the rain, the air.

2. Novel and not tacky: color tone. The layout of the pictorial is lively.

三. Warm: [ wēn nuǎn ].

Basic explanation. 1. Warm: Weather. He felt deeply collective.

2. Make you feel warm. The party's concern has touched the hearts of the people in the disaster-stricken areas.

Fourth, refreshing: [ qīng shuǎng ].

Basic explanation. 1. Clean and cool: air after rain.

2. Easy and refreshing: the task is completed, and the heart is very good.

3. Neat and tidy; Clean: Clean up the house.

4. Clear; Understood: sanity. Tell the story.

5. Light and refreshing: taste.

What kind of wind is: warm spring breeze, warm spring breeze, naughty spring breeze, soft spring breeze, and rainy spring breeze.

1.A warm spring breeze.

Interpretation: "Spring breeze" and "warm" are connected to create a word to describe the warm spring breeze.

Sentence formation: The spring sun is warm, the spring light is rippling, the spring breeze is bright and charming, the spring breeze is warm, and the warm spring breeze is gentle and the spring mountain is like a dai.

2.Warm spring breeze.

Interpretation: The spring breeze, with a moist aromatic breath, blows gently, blows on the body, and does not feel cold, but feels warm. The spring breeze is as soft and gentle as cotton wool.

Sentence formation: The warm spring breeze blows in the ears, the fragrance of flowers enters the nose, the most is the early spring solstice, the sun is shining and smiling boundlessly.

3.Naughty spring breeze.

Interpretation: Using naughty to describe the spring breeze is actually an anthropomorphic sentence, followed by a description of hide and seek, this action is both further anthropomorphic and very appropriate.

Sentence formation: Oh! Naughty spring breeze. Oh! The joyful spring breeze opened my heart and let me see a better tomorrow. I want to go up, hold your hand, and go with you to wake up all things, urge the white flowers to bloom, and be a real springherald.

4.Gentle spring breeze.

Interpretation: The soft spring breeze is generally compared to something warmer and more beautiful.

Sentence formation: The soft spring breeze blows the wicker and ripples in the water. The pure moonlight shrouded the village quietly, like a thin gauze coat.

5.The spring breeze that melts the rain.

Interpretation: It means rain and wind suitable for the growth of plants and trees. Figuratively kind and easy education.

Sentence formation: The latter is the elegant femininity of the side ground, formless and shadowless, the delicate place is like the spring breeze that turns into rain, moisturizing things silently, but the grandiose place penetrates the heart and lungs, and breaks the life opportunity. <>