What Causes Tsunamis
With drastic changes in climate throughout the world, with some regions experiencing drought while other receiving excessive rainfalls resulting in floods, there is a dire need to focus on improving cloud seeding technology to save the humanity from un-forgiving weather consequences. Below we discuss its uses and effectiveness in different countries for last few years.
Naturally, rain formation occurs through super cooled droplets of water, which is at a temperature well below freezing 0 c. The droplets convert into ice when it comes into contact with impurity atoms in the atmosphere and upon build-up of ice particles crossing threshold weight in the air, precipitation occurs. If the temperature above is high enough, the snow may melt into droplets while on its way down.
Cloud seeding is an artificially producing (rain) precipitation technique, which is executed by emitting rain-catalyst gases such as silver-iodide, dry ice (frozen carbon dioxide) etc in air, either by air planes or, by firing rockets, gas-canisters into air.
The above-mentioned gases, if released into the environment, help in a process known as nucleation, which is the condensation and crystallization of air moisture surrounding the gas nuclei. Once there is enough concentration of water droplets combining into big drops, rain pours down.
Many countries, using the artificial rain technique, have claimed to receive significant amount of water in areas where droughts had been predicted. According to the Chinese authorities, Beijing, which would face less precipitation otherwise, has experienced 30% rise in its water reservoirs.
Among other countries, USA has also been working to improve its weather conditions for quite some years now. UAE has also undergone appreciable rainfall on its vast desert areas through cloud seeding.
Not only can drought be mitigated through the technique- smog, fog and hail storms or in other words, pollution – have also been eliminated by the weather modification centers. Indonesia has, in the past, seeded clouds to eradicate smog caused by bush fires in Sumatra.
The technique can also be used in reverse to hinder rain in areas, where it is going to be occurring naturally. The process works by forcing clouds to rain before they reach their destination. In 2008, prior to Beijing Olympics ceremony, China fired silver iodide rockets into air to save itself from possible down pour, disrupting the event.
Recently, researchers in Germany have radiated infrared pulses in the air to coax the environment into forming Sulphur and Nitrogen particles, which may then be used as nuclei for condensed water droplets.