Rainwater is a major source of rain water in most parts of the world. In order to survive the diverse ecosystem, rainwater is needed to keep hydropower projects active and to keep the irrigation system active. Although not all types of rain reach the surface. Some rainy points dry when reading through the dry air. This feature, known as Varga, is seen in dry desert areas. Rainfall is calculated in millimeters in terms of precipitation. Then according to scale, the calculation of light, heavy, heavy and extreme rainfall is given. Rainfall from 0.25mm to 1mm in the morning, heavy rainfall from 4 mm to 16 mm, heavy rainfall from 16 mm to 50 mm and heavy rainfall of 50 mm is called extreme rainfall.
For the first time, due to water vapor, the water vapor, which is required for precipitation, clouds rising above the surface due to the evaporations of the clouds, the dust of the sand, and the clouds of sand forming a cluster. When the shape of the cloud becomes heavy, it is either rain or rain. This natural process is called human-controlled method, artificial rainfall. In artificial rain, the whole process, sometimes its partial (water vapor transmutation) is controlled. In order to control the whole process, the first water of the water is immobilized with a large fan of speed. The vapors that rise above the light and clogged with the dust of the wind. However, the synthetic patchwork can also be artificially restrained by throwing particles of silver iodide. In this case, the use of guns or rockets for the production of natural or artificially flavored vapors, from the ground to the top, or the use of the air, the particles of silver iodide from the sky to the ground are spread. Calcium chloride is used in warm areas. Thus, when the concrete water vapor or the clouds will become heavy, then the clouds will drop in that place, rain will occur. This process of artificial rain is costly.
Artificial rain first thought that US scientist Vincent Sayyfer He used to make the cloud by straining the water vapor from the air to form a cloud of carbon dioxide (dry ice). He was able to make a cloud like cotton by throwing dry ice near Berkshire Hill. So he is called the father of artificial clouds.
Artificial rain brought the message of hope to many countries around the world. China is the most beneficial. Rainfall in the northern part of China is very low. The situation of other sources of water is also very bad. So by applying artificial rain, they have been able to increase the water of the river by 13%. This artificial rain method is used to keep the inaugural ceremony of the 2008 Beijing Olympic Games free of rains. But whether there is any adverse reaction to artificial rainfall, it is still not beyond the doubt. Beijing's neighboring regions have alleged that in this process, water vapors are being pulled from their air. Many people think that this system of heavy artificial rainfall can cause global warming.
The amount of water vapor in the air is measured by the humidity of the air. We mean relative humidity in everyday life. Relative humidity is the partial pressure of water vapor in the air in a certain place and the vapor pressure associated with water vapor at that temperature. The specific amount of water vapor that can hold the air in specific heat and pressure is specific. Moisture is also called absolute humidity and fixed moisture. Relative humidity is an important part of weather forecasts. If humidity is more than the summer, we feel more warm, because it reduces the effectiveness of the body's heat-out process by sweating. This effect is calculated in the heat index chart.
