SPOTLIGHT: An ice nucleus
generator operated by the Desert Research Institute on land owned by Denver Water, north of the Winter Park Resort.
Bingemer, 2008: The fast ice nucleus
For a droplet of supercooled water to change to ice, it must "learn" to rearrange its molecules into a crystalline structure using a seed particle called an ice nucleus
. This serves as a catalyst for the water to crystallize.
Bacteria in the leaf ecosystem with emphasis on Pseudomonas syringae, ice nucleus and epiphyte.
Erwinia herbicola: A bacterial ice nucleus active in increasing frost injury to corn.
The crystal growth radiates outward from this center, which is known as an ice nucleus
. The dust particle's likely composition is thought to be a form of clay called kaolinite.
The same aerosol suite (aerosol size distribution, aerosol mass, aerosol composition, CCN) and precipitation sampling systems used in previous CalWater 1 efforts were used in the early start campaign Additionally, aerosol filter collections were made for biological and ice nucleating particle analyses extending across the entire mixed-phase cloud temperature regime, and the first field linkage of the CFDC with an ATOFMS to measure the compositions of aerodynamically separated ice crystals [activated ice nucleus
(IN)] from the CFDC [using a pumped counterflow virtual impactor (PCVI)].
In the case of PL, snowflakes that don't melt quite all the way are liquid drops with a potentially active ice nucleus