Biogenic ice nucleus

Alternative definitions (1), class: vernacular (0)
Term: Biogenic ice nucleus
Definition: An ice nucleus of biological origin, particularly bacteria (e.g., pseudomonas syringae) from plant surfaces. These organisms have threshold temperatures as high as -2C, being active at the highest temperature known for natural nuclei. They were first identified in leaf litter, collected worldwide. Commercial application lies in nucleation of water spray drops for artificial snow on ski slopes.
Created 2022.03.08
Last Modified 2023.03.27
Contributed by GCW Glossary