What method is used to enhance rainfall by introducing ice nuclei into clouds?

The method used to enhance rainfall by introducing ice nuclei into clouds is known as cloud seeding. This process involves dispersing substances, such as silver iodide or sodium chloride, into the atmosphere to encourage the formation of ice crystals in supercooled cloud droplets. When these ice crystals grow large enough, they can fall to the ground as precipitation, effectively enhancing rainfall in areas that are experiencing insufficient rainfall or drought conditions.

This technique is based on the concept that ice nuclei can facilitate the processes that lead to the formation of precipitation. When these nuclei are introduced into clouds, they provide a surface for moisture to collect and freeze around, which can accelerate the conversion of cloud moisture into raindrops or snowflakes.

Other methods mentioned, like atmospheric stabilization, precipitation enhancement, and storm modification, do not specifically pertain to the deliberate introduction of particles for the purpose of stimulating rainfall via ice nucleation as cloud seeding does. Atmospheric stabilization typically refers to processes that prevent vertical mixing in the atmosphere, while precipitation enhancement might imply broader techniques that don't necessarily involve ice nuclei specifically. Storm modification generally deals with altering or impacting storm characteristics, which is a different process from cloud seeding focused purely on increasing precipitation.