How to understand the change of weather?

Various weather phenomena, such as snow, frost and fog, are all caused by the change of airflow state and temperature, which promotes the condensation of water vapor contained in the air. Therefore, to understand the weather changes, we must first understand the nature of the air. The nature of air is greatly influenced by the environment. For example, indoors, the temperature is higher than outdoor in winter and lower than outdoor in summer. It is also outdoor, and the temperature in the south of the house is higher than that in the north; When it is windy, the wind in the passage between houses is often stronger than that in the open space.

This special situation caused by environmental impact is only useful when studying microclimate. If you want to make a correct weather forecast, you must first master the original appearance of the air, so you must avoid these external influences.

How can we avoid the influence of the environment? This requires that the observation site is empty and the air can circulate freely.

Secondly, at the observation site, it is necessary to measure sunshine, ground temperature, wind force and rainfall. In order to prevent the sun from being blocked and the wind and rain from being blocked by the surrounding buildings, the surrounding area needs to be open.

Third, in the field of observation, it is necessary to observe clouds and visibility, as well as weather phenomena in the distance. If there are many buildings around, it is impossible to observe these phenomena.

Therefore, in order to make correct weather forecast, it is necessary to set up meteorological observation fields in the surrounding open places.