Abstract: Urea was observed to have extraordinary ice nucleating properties in laboratory and natural clouds. Ice nucleation was induced in laboratory clouds at temperatures as warm as +6C. The nucleation mechanism involves the high ...

Abstract: A local cooling ice nucleation model is proposed to explain the high ice nucleation activity of soluble compounds which have endothermic heats of solution. Partial dissolution of the nuclei particle is required to produce ...

Abstract: No abstract available.

Abstract: Laboratory experiments were conducted to determine the local cooling resulting from the dissolution of soluble ice nuclei which have endothermic heats of solution. The local cooling was determined from ice nucleation ...

Abstract: A comparison study is made of liquid water content measurements using conventional devices with those integrated from optically measured drop size distributions. In clouds of low to medium droplet size (<30 ? diameter) the ...

Abstract: tract

Abstract: An electro-optical technique is described for the measurement of the size distributions of cloud and precipitation particles. The technique utilizes a linear array of photodetectors as a size measuring grid in a typical ...

Abstract: Longwave emissivities and the vertical profile of cooling rates of tropical cirrus clouds are determined using broadband hemispheric irradiance data. Additionally, a broadband mass absorption coefficient is defined and ...