Cloud Seeding-Dubai Flood !!!

 


Cloud Seeding

        Clouds are made up of tiny water droplets or ice crystals that form when water vapor in the atmosphere cools and condenses around a tiny particle of dust or salt floating in the atmosphere. Without these particles, known as condensation or ice nuclei, raindrops or snowflakes cannot form and precipitation will not occur. 

        Cloud seeding is a weather modification technique that improves a cloud’s ability to produce rain or snow by introducing tiny ice nuclei into certain types of subfreezing clouds. These nuclei provide a base for snowflakes to form. After cloud seeding takes place, the newly formed snowflakes quickly grow and fall from the clouds back to the surface of the Earth, increasing snowpack and streamflow.  


Chemicals used for Cloud Seeding

    The most common chemicals used for cloud seeding include silver iodide, potassium iodide and dry ice (solid carbon dioxide). Liquid propane, which expands into a gas, has also been used. It can produce ice crystals at higher temperatures than silver iodide. After promising research, the use of hygroscopic materials, such as table salt, is becoming more popular.

                  

 How does it work?

        Cloud seeding is usually carried out by sprinkling particles from a plane. Using weather forecasting techniques, suitable clouds are identified based on the location of the target area and the prevailing winds. Given the appropriate conditions, cloud seeding can modify clouds and induce rain. This works in two ways: by producing rain when none would fall naturally; or by increasing the amount of rain that falls over a particular area.


    UAE has denied cloud seeding process for the heavy rain took place on last week.

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