Results 21 to 30 of about 20,278 (263)

SPIN modification for low-temperature experiments [PDF]

open access: yesAtmospheric Measurement Techniques, 2020
The SPectrometer for Ice Nuclei (SPIN) has been modified to access ice nucleation at low temperatures. The modification consists of a reconfiguration of components from SPIN's cooling system to provide refrigerant with a low boiling point to the chamber.
A. Welti   +7 more
doaj   +1 more source

Perspectives on the Future of Ice Nucleation Research: Research Needs and Unanswered Questions Identified from Two International Workshops

open access: yesAtmosphere, 2017
There has been increasing interest in ice nucleation research in the last decade. To identify important gaps in our knowledge of ice nucleation processes and their impacts, two international workshops on ice nucleation were held in Vienna, Austria in ...
Ivan Coluzza   +23 more
doaj   +1 more source

Ice nucleation terminology [PDF]

open access: yes, 2014
Abstract. Progress in the understanding of ice nucleation is being hampered by the lack of uniformity in how some terms are used in the literature. This even extends to some ambiguity of meanings attached to some terms. Suggestions are put forward here for common use of terms. Some are already well established and clear of ambiguities.
G. Vali   +3 more
openaire   +1 more source

A new temperature- and humidity-dependent surface site density approach for deposition ice nucleation [PDF]

open access: yesAtmospheric Chemistry and Physics, 2015
Deposition nucleation experiments with Arizona Test Dust (ATD) as a surrogate for mineral dusts were conducted at the AIDA cloud chamber at temperatures between 220 and 250 K.
I. Steinke   +4 more
doaj   +1 more source

Ice Nucleation on a Corrugated Surface [PDF]

open access: yesJournal of the American Chemical Society, 2018
Heterogeneous ice nucleation is a key process in many environmental and technical fields and is of particular importance in modeling atmospheric behavior and the Earth's climate. Despite an improved understanding of how water binds at solid surfaces, no clear picture has emerged to describe how 3D ice grows from the first water layer, nor what makes a ...
Chenfang Lin   +5 more
openaire   +4 more sources

Leipzig Ice Nucleation chamber Comparison (LINC): Inter-comparison of four online ice nucleation counters [PDF]

open access: yesAtmospheric Chemistry and Physics, 2017
Abstract. Ice crystal formation in atmospheric clouds has a strong effect on precipitation, cloud lifetime, cloud radiative properties and thus the global energy budget. Primary ice formation above 235 K is initiated by nucleation on seed aerosol particles called ice nucleating particles (INPs).
Monika Burkert-Kohn   +9 more
openaire   +3 more sources

A comprehensive parameterization of heterogeneous ice nucleation of dust surrogate: laboratory study with hematite particles and its application to atmospheric models [PDF]

open access: yesAtmospheric Chemistry and Physics, 2014
A new heterogeneous ice nucleation parameterization that covers a wide temperature range (−36 to −78 °C) is presented. Developing and testing such an ice nucleation parameterization, which is constrained through identical experimental conditions, is ...
N. Hiranuma   +8 more
doaj   +1 more source

Ice Nucleation Activity in Lichens [PDF]

open access: yesApplied and Environmental Microbiology, 1988
A newly discovered form of biological ice nucleus associated with lichens is described. Ice nucleation spectra of a variety of lichens from the southwestern United States were measured by the drop-freezing method. Several epilithic lichen samples of the genera Rhizoplaca, Xanthoparmelia , and Xanthoria
openaire   +2 more sources

Heterogeneous ice nucleation: exploring the transition from stochastic to singular freezing behavior [PDF]

open access: yesAtmospheric Chemistry and Physics, 2011
Heterogeneous ice nucleation, a primary pathway for ice formation in the atmosphere, has been described alternately as being stochastic, in direct analogy with homogeneous nucleation, or singular, with ice nuclei initiating freezing at deterministic ...
D. Niedermeier   +6 more
doaj   +1 more source

AFM imaging of extracellular ice nucleators

open access: yesJournal of Food Science, 2020
Abstract Ice nucleators are substances that can initiate nucleation of pure water at and above −10 °C. Some plant pathogens possess a gene which encodes for a protein that acts as an ice nucleator, activity of which is enhanced when it is combined with the sugar and lipid components from the cell membrane.
Zafer Gezgin   +2 more
openaire   +4 more sources

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