Cloud seeding is a technique used for artificial rain or snowfall. In this technique, chemicals are sprayed into the clouds, causing the water vapour in the clouds to condense and fall as rain or snow. If you are wondering why there is a sudden discussion of cloud seeding, then the biggest reason for this is the increasing air pollution in Delhi-NCR. According to media reports, Gopal Rai has also written a letter to the Union Environment Minister agreeing to this.
How does cloud seeding work?
There are two main types of chemicals used in cloud seeding:
- Silver iodide: This chemical forms ice crystals. When the temperature in the clouds cools, ice crystals begin to form around the silver iodide particles. These crystals grow and fall in the form of snow or rain.
- Sodium Chloride: This chemical induces rain by condensing the water vapour present in the clouds.
When is cloud seeding used?
Cloud seeding is mainly used in the following situations:
- Rainfall in dry areas: For artificial rain in areas affected by drought.
- Reducing the amount of rain: to reduce damage caused by flooding.
Advantages of Cloud Seeding
- Increase in agricultural production: With the help of rain in agricultural areas, crop production can be increased.
- Relief from Drought: Drought conditions can be mitigated by artificial rain in drought affected areas.
- Management of water resources: Can help in the management of water resources.
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Disadvantages of cloud seeding
- Interference with the weather: Cloud seeding can affect weather patterns, leading to unintended consequences.
- The environmental impacts: The use of chemicals can harm the environment.
- A limited impact: The effect of cloud seeding can be limited, especially when there is not enough water vapour in the clouds.
Cloud seeding is also used in India, especially in areas affected by drought. In recent years, many states have used this technique to deal with drought. However, the success rate of cloud seeding is still a matter of debate. Cloud seeding is an attractive technology, but its effects are limited and it is important to take into account the environmental impacts. Precautions should be taken while using this technique and it should be used based on scientific studies.
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