When water droplets in liquid state take the form of ice crystals as the temperature is typically below 0 centigrade. The droplets cannot just hang in the air and fall on the earth in the form of rain.
Well, this blog does not talk about rain, but about the process of cloud seeding, so we will find out what exactly is cloud seeding, and what can be done, with the help of this procedure.
Cloud seeding is the procedure to simulating precipitation and forming rain with the use of dry ice, into the upper part of clouds. As most of us know, rainfall starts from the crystals of cooled cloud droplets, by the use of the silver iodide particles the growth of novel ice particles is encouraged considerably. Be it winter or summer, clouds always are not enough for producing significant rainfall.
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Cloud Seeding Methods
Static cloud seeding
This method makes the use of a chemical like silver iodide into clouds. This offers a crystal around which condensation of moisture can take place. The moisture is there in the clouds, but this chemical makes rain clouds more efficient.
Hygroscopic cloud seeding
This process scatters salts through bursts in the lower portions of clouds. With the joining of water, salts grow. Hygroscopic cloud seeding has a lot of potential, but there is still a need of more research to be done in this regard.
Silver iodide, liquid propane, dry ice is used for this process. The use of hygroscopic materials for example table salt is getting popular after the positive research results.
But it is important for them to take into account the countries downstream with regards to the rainfall which they were to have if the clouds not were seeded.
It is because of the increase in the number of tech-advancements happening around the world, growing expenditure by the countries on cloud modification, and also reducing the risks that come up with low rainfall, the demand for cloud seeding will continue to rise at pace in the years to come.