ice nucleus

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SPOTLIGHT: An ice nucleus generator operated by the Desert Research Institute on land owned by Denver Water, north of the Winter Park Resort.

Clouds of bliss

Bingemer, 2008: The fast ice nucleus chamber FINCH.

ML-CIRRUS: the airborne experiment on natural Cirrus and contrail cirrus with the high-altitude Long-Range Research Aircraft HALO

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.

Icing weather basics: basics--yes. Same ol' stuff--no. Safely flying in winter's ice requires a lot more than knowing rime vs. clear, and trace vs. moderate. Here's some real depth you can use

Crystallographic arrangement: The geometric arrangement of hydrogen bonding molecules on the surface of the ice nucleus must be very similar to that of water molecules in an ice crystal lattice.

Therefore, active site densities can be correlated to the ability of an aerosol to function as an ice nucleus. In other words, ice nuclei with more active sites exhibit greater ice nucleation efficiencies.

Chernoff & Bertram (2010) found that it is a fairly efficient ice nucleus as it exhibited onset ice supersaturations between 110% and 120%.

Because of this, more quantitative studies are required in order to better understand the mechanism by which pollen functions as an ice nucleus in the four different modes.

Review of recent developments and shortcomings in the characterization of potential atmospheric ice nuclei: focus on the tropics

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.

Isolation and identification of Ice-nucleating--active bacteria and their antagonistic bacteria from pistachio trees in Rafsanjan Region

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.

Pillars in the Sky: High-flying ice crystals reflect sunlight to make glowing spires

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)].

CalWater field studies designed to quantify the roles of atmospheric rivers and aerosols in modulating U.S. West Coast precipitation in a changing climate

In the case of PL, snowflakes that don't melt quite all the way are liquid drops with a potentially active ice nucleus in it.

Finding the big drops: what we teach about freezing rain is true less than 10 percent of the time. During the other 90, there may be no safe haven above you

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