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1980s Towering Puffy Cumulonimbus And Cumulus Clouds Fully Developed Mature Stage Texas USA (Photo … More by Heilman/Classicstock/Getty Images) Heilman/ClassicStock In the wake of the horrific Texas floods, there is a lot of discussion about cloud seeding. While it certainly did not cause those floods, talk about cloud seeding has flowed out of the fringes into mainstream conversations. As a meteorologist and atmospheric science expert with around thirty years of experience, I thought it would be useful to provide four basic facts about it. The Concept I remember sitting in a barber shop one day on a hot summer day as it rained. I told the barbers that rain began as snow in the upper reaches of the clouds. They were baffled. Let me explain. Most U.S. rainstorms are caused by a process called the Bergeron or ice crystal process. In my atmospheric physic class, I get more into the physics of it all, but a summary will suffice here. Precipitating clouds will typically have a mix of ice crystals, supercooled water (water at temperatures below freezing), water droplets, and water vapor. According to the NOAA Glossary, the Bergeron process is, “The process by which ice crystals in a cloud grow at the expense of supercooled liquid water droplets.” Infographic explaining the cloud seeding process, the traditional method of artificial rainmaking. … More (Graphic by Laurence CHU / AFP via Getty Images) AFP via Getty Images All clouds need “seeds” called condensation nuclei or ice nuclei to properly develop. This could be a speck of dust, clay or pollen in the atmosphere. There are several temperature, moisture, and air motion processes that come into play. However, ice nuclei are very important for the formation of ice crystals in the upper part of clouds. As ice crystals grow larger through clumping…

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Filed under: News - @ July 9, 2025 12:28 pm