What is the weather forecast?

In daily life, human beings pay more attention to meteorological problems and arrange their own travel, production and other issues accordingly. The weather here is what we often say. Weather refers to the ever-changing atmospheric state, not only in a certain time and space, but also in a certain time interval, so it can be understood as the general term of weather phenomena and weather processes. 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, snow, frost, thunder, hail, etc.). ) in an instant. The weather process is the change process of weather phenomena with time in a certain area. This chapter focuses on the atmosphere, weather and human life, weather forecast, meteorological satellites and various weather phenomena.