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Rain seeding in Calcutta (1950s) — what actually happened?
In the early 1950s in Kolkata (then Calcutta), there were early experimental attempts at artificial rainmaking / cloud seeding in India.
The key figure linked to this period is:
Sudhanshu Sekhar Banerjee (also referred to as S.K. Banerji / “Megh Banerjee”)
🌧️ What was done in the 1950s?
Around 1952, Banerjee experimented with early forms of cloud seeding over Kolkata.
Reported methods included:
Silver iodide dispersal
Dry ice experiments
Balloon-based release systems (hydrogen balloons)
Early atmospheric testing inspired by US cloud-seeding research
The goal was simple:
Trigger rainfall by introducing particles that help cloud droplets form and grow.
Some accounts describe successful induced rainfall events, though results were not consistently controlled or scientifically standardized by modern standards.
🧪 Why Kolkata mattered in this history
At that time:
India was facing drought concerns in multiple regions
Global cloud seeding research had just begun (post-1946 US experiments)
Kolkata became one of the earliest Indian testbeds for adaptation of this science
Banerjee is often described as:
One of India’s earliest meteorologists working on weather modification
A pioneer who tried to localize foreign techniques for Indian monsoon conditions
⚠️ Important scientific context
Even today:
Cloud seeding is not a reliable “rain-making machine”
It only works when suitable clouds already exist
Results are probabilistic, not guaranteed
So in the 1950s:
Experiments were exploratory
Measurement standards were limited
Success claims are historically interesting but not rigorously comparable to modern climate science trials
🧠 Big picture
The Kolkata experiments were part of a global wave of post-WWII science exploring:
weather control
atmospheric physics
early “geoengineering-like” ideas
They represent early experimental meteorology, not fully proven weather control.
If you want, I can break down:
how cloud seeding actually works physically (step-by-step in clouds), or
whether modern India still uses these techniques today.
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