What do humans rely on to give orders?

Humans rely on the progress of science and technology to master and change nature, realize the forecast and regulation of the weather, and thus indirectly achieve the effect of "calling the wind and calling the rain".

I. Atmospheric science and meteorological prediction

Through the study of atmospheric science, human beings have a deep understanding of the composition, structure and motion law of the earth's atmosphere, so that they can predict the future weather trend. Meteorological forecast is to use a large number of observation data, meteorological models and computer technology, through the analysis and simulation of meteorological systems, to get the forecast results of future weather. In this way, human beings can take countermeasures in advance to reduce the impact of weather disasters and ensure the safety of people's lives and property.

The second is cloud processing and precipitation enhancement.

1. Cloud processing

Cloud processing is a technology that changes the characteristics of clouds by artificial means, and promotes or inhibits the formation of precipitation. Through cloud treatment, the particle size, concentration and charge distribution of the cloud can be changed, thus affecting the physical and chemical processes inside the cloud and promoting the condensation of water droplets and the formation of precipitation. In a limited range, this technology can create artificial precipitation and play the role of "calling for rain".

2. Artificial precipitation enhancement operation

Artificial precipitation enhancement is a technology to enhance or trigger weather phenomena by artificial means, thus increasing precipitation. It uses the potential precipitation substances in the cloud, such as ice crystals and cloud droplets, to inject them into the cloud by spraying or catalyst, so that the water vapor condenses into precipitation particles and finally forms rainfall. Artificial precipitation enhancement is widely used to solve severe weather problems such as drought, drought and flood, and improve crop yield.

Third, climate control and human influence.

1. Effects of forest and vegetation on climate

Areas with extensive forest and vegetation cover have significant climate regulation effects. They absorb carbon dioxide through photosynthesis, release oxygen, adjust the humidity and temperature in the atmosphere and reduce the heat island effect. In addition, forests and vegetation can also affect the precipitation distribution and water circulation process, improve soil quality and prevent soil erosion, thus having a positive impact on the climate.

2. Impact of human activities on climate

Human activities such as industrial production, energy consumption and the emission of a large number of greenhouse gases have a direct and indirect impact on the climate. The increase of greenhouse gases will lead to the increase of the earth's surface temperature, which in turn will cause climate change. In addition, human activities such as forest destruction, urbanization and land use change will also change the reflectivity and evaporation process of the surface, thus affecting precipitation and climate formation.

Summary:

Through atmospheric science and meteorological forecast, cloud processing and precipitation enhancement, climate control and artificial influence, human beings have realized the forecast and control of the weather, thus indirectly achieving the effect of "calling for rain". The application of these technologies and methods has improved the ability of human beings to know and control nature, and provided more convenience and guarantee for people's production and life.