What are the common sayings about the weather?

The common sayings about the weather are as follows:

1. In autumn, it is windy and rainy in the west and sunny in the northeast.

2. Pigs hold grass in their mouths, and a cold wave arrives.

3. It’s a fish-scale sky, and it’s windy even if it doesn’t rain.

4. The raindrops are as big as copper coins, and it doesn’t even rain.

5. The morning fog is not closing, and the drizzle is drenching. There are flowers and clouds in the sky, and people are dying from the sun on the ground.

Detailed introduction to weather:

Weather refers to the specific state of the atmosphere close to the surface in a certain area in a short period of time. Weather phenomena refer to various natural phenomena that occur in the atmosphere, that is, various meteorological elements in the atmosphere at a certain instant (such as temperature, air pressure, humidity, wind, clouds, fog, rain, flash, snow, frost, thunder, Hail, haze, etc.) spatial distribution comprehensive performance.

The weather process is the process of changes in weather phenomena in a certain area over time. Various weather systems have certain spatial and temporal scales, and systems of various scales are intertwined and interact with each other.

The combination of many weather systems forms a large-scale weather situation and constitutes the atmospheric circulation of the hemisphere and even the world. Weather systems are always in the process of being reborn, developing and dying, and have corresponding distributions of weather phenomena at different stages of development.

Causes of wind:

The direct cause of wind: the uneven distribution of air pressure in the horizontal direction. Wind is comprehensively affected by different factors such as atmospheric circulation, topography, and water bodies, and takes various forms, such as monsoons, local land and sea breezes, valley winds, and foehn winds. Simply put, wind is the directional movement of air molecules.

To understand the causes of wind, we must first understand two key concepts: air and air pressure. The composition of air includes: nitrogen molecules (accounting for 78% of the total volume of air), oxygen molecules (accounting for about 21%), water vapor and other trace components. All the air molecules are moving very fast, rapidly colliding with each other and anything on the horizon.

It can be defined as: in a given area, the amount of pressure exerted by air molecules in that area. Generally speaking, the more air molecules there are in a certain area, the greater the air pressure in that area. Correspondingly, wind is the result of the pressure gradient force.