Cloud seeding trials likely in Oct-Nov, Pg 5.

Key Highlights:

• Delhi government received clearance from DGCA on September 23 for cloud seeding trials between October 1 and November 30.
• The cloud seeding method involves using silver iodide to induce precipitation and reduce smog.
• Trials were initially planned for August 30 to September 10 but were postponed due to monsoon cloud patterns.
• This initiative aligns with Delhi's strategy for year-round clean air to protect public health during peak winter pollution.

Detailed Insights:

• Cloud seeding is being explored as a short-term solution to combat smog, though its effectiveness is debated among experts.
• The DGCA conditions require pilots to have professional licenses and experience in similar flight operations.
• Operations will be conducted under Visual Flight Rules (VFR) with prior ATC clearances and coordination with airport authorities.
• The trials will avoid restricted areas, prohibit aerial photography, and exclude foreign crew involvement.
• The decision to proceed with trials in October and November depends on real-time weather conditions and inter-agency coordination.
• The India Meteorological Department and the Indian Institute of Tropical Meteorology provide weather forecasts influencing trial schedules.

Scientific/Technical Concepts Involved:

• Cloud Seeding: A weather modification technique that disperses substances into the air to increase precipitation.
• Silver Iodide: A chemical compound used in cloud seeding to act as condensation nuclei for forming raindrops.
• Visual Flight Rules (VFR): A set of regulations under which a pilot operates an aircraft in weather conditions clear enough to see where they are going.