What is the relationship between weather and humidity?

There is a close relationship between weather and air humidity. The higher the relative humidity of the air, the closer it is to the dew point, and the precipitation will appear when the air cools down. The lower the relative humidity, the clearer the weather. The weather mentioned here is weather phenomenon, which refers to all atmospheric physical phenomena such as wind, clouds, rain, snow, frost, dew, rainbow, halo, lightning and thunder.

1.

Weather refers to the specific state of the atmosphere near the surface in a short period of time. Weather phenomenon refers to various natural phenomena in the atmosphere, that is, the comprehensive expression of the spatial distribution of various meteorological elements in the atmosphere (such as temperature, pressure, humidity, wind, clouds, fog, rain, flash, snow, frost, thunder, hail, haze, etc.). ) in an instant. The weather process is the change process of weather phenomena with time in a certain area.

2.

Humidity, a physical quantity indicating the dryness of the atmosphere. At a certain temperature, the less water vapor in a certain volume of air, the drier the air; The more water vapor, the wetter the air. The degree of dryness and wetness of air is called "humidity". In this sense, it is often expressed by physical quantities such as absolute humidity, relative humidity, relative humidity, mixing ratio, saturation deficit and dew point. If the weight of steam in wet steam accounts for the percentage of the total weight (volume) of steam, it is called the humidity of steam. The comfortable humidity of human body is: the relative humidity is lower than 70%.

3.

Relative humidity (relative

Humidity) refers to the percentage of water vapor pressure and saturated water vapor pressure in the air. The ratio of absolute humidity of wet air to the maximum absolute humidity that can be achieved at the same temperature. It can also be expressed as the ratio of the partial pressure of water vapor in wet air to the saturated pressure of water at the same temperature. Air has the characteristics of absorbing moisture, and the concept of humidity is how much water vapor is contained in the air. At the current temperature, the moisture content in the air reaches saturation, and the relative humidity is 100%. When the relative humidity in the air exceeds 100%, water vapor will generally condense out, which is called dew point. With the increase of temperature, the more water can be contained in the air, that is to say, the relative humidity will increase with the decrease of temperature with the same amount of water vapor.

4.

Dew point/dew point temperature Td, the water vapor content in the air is unchanged,

Under the condition of keeping the air pressure constant,

The temperature at which air cools to saturation is called dew point temperature, or dew point for short. The unit is℃ or ℉, which is actually the temperature at which water vapor and water reach equilibrium.

5.

Meteorology, in layman's terms, refers to all atmospheric physical phenomena such as wind, clouds, rain, snow, frost, dew, rainbow, halo, lightning, thunder and so on.

6.

In meteorology, the physical quantity representing the degree of air heat and cold is called temperature, which is referred to as temperature for short.

Temperature). The international standard unit of temperature measurement is Celsius (℃).