Clouds composed of both ice particles and supercooled liquid water droplets exist at temperatures above ∼236 K. These mixed phase clouds, which strongly impact climate, are very sensitive to the presence of solid particles that can catalyse freezing. In this paper we describe experiments to determine the conditions at which the clay mineral kaolinite nucleates ice when immersed within water dro...

Nature has evolved many elegant solutions to enable life to flourish at low temperatures by either allowing (tolerance) or preventing (avoidance) ice formation. These processes are typically controlled by ice nucleating proteins or antifreeze proteins, which act to either promote nucleation, prevent nucleation or inhibit ice growth depending on the specific need, respectively. These proteins ca...

Abstract Nucleation efficiency and the special supermolecular structure formed in presence of novel nucleating agents, N,N′-dicyclohexylsuberoylamide N,N′-dicyclohexylsebacoylamide are presented this work. The nucleation effect is studied isotactic polypropylene (iPP). melting crystallization processes as well polymorphic composition using calorimetric thermo-optical techniques, while solubilit...

This laboratory study evaluates an experimental set-up to study the immersion freezing properties of ice residuals (IRs) at a temperature ranging from −26 to −34 ◦C using two continuous-flow diffusion chamber-style ice nucleation chambers coupled with a virtual impactor and heat exchanger. Ice was nucleated on the total ambient aerosol through an immersion freezing mechanism in an ice nucleatio...

Abstract. Ice-nucleating particles (INPs) represent a rare subset of aerosol that initiate cloud droplet freezing at temperatures above the homogenous point water (−38 ∘C). Considering ocean covers 71 % Earth's surface and represents large potential source INPs, it is imperative identities, properties relative emissions INPs become better understood. However, specific underlying drivers marine ...

Abstract. Ice-nucleating particles (INPs) influence the formation of ice crystals in clouds and many types precipitation. This study reports unique properties INPs collected from 42 precipitation samples Texas Panhandle region June 2018 to July 2019. We used a cold stage instrument called West Cryogenic Refrigerator Applied Freezing Test system estimate INP concentrations per unit volume air (n...