What role did Irving Langmuir play in the early scientific study of weather modification?

Irving Langmuir played a pivotal role in the modern era of scientific weather modification, which began in 1946 through his collaboration with Vincent J. Schaefer at the General Electric Research Laboratories.1

Building on their earlier research into atmospheric science and airplane deicing during World War II, Langmuir and Schaefer conducted laboratory and atmospheric experiments demonstrating that supercooled clouds—those containing water droplets at temperatures below freezing—could be dissipated. They discovered that by seeding these clouds with dry ice (frozen carbon dioxide), they could induce the formation of ice crystals, which would then grow and fall from the clouds as precipitation.12

Langmuir’s subsequent work involved broader experiments in cloud seeding, including efforts to influence snowfall and rainfall. While his research helped establish the scientific foundation for cloud modification, the effectiveness of these procedures remained a subject of significant debate and controversy within the meteorological community.21