IIT Kanpur has a possible solution to Delhi’s worsening air pollution. Experts said ‘artificial rains’ can mitigate toxic air quality levels.
Artificial or controlled rains are created through ‘cloud seeding,’ which includes adding certain chemicals to the clouds.
Chemicals like silver iodide, potassium iodide, and dry ice are dispensed in the troposphere. This binds water vapour and creates rainy clouds.
The effectiveness of artificial rain is not assured. It heavily depends on the presence of moisture in clouds and appropriate wind patterns.
In September, Delhi’s Environment Minister Gopal Rai hinted at a possible experiment. He said experts from IIT Kanpur made a presentation.
In addition to Delhi government, permissions are required from the Home Ministry, civil aviation authorities and even the Special Protection Group.