Producing natural like snow in a supercooled cloud for laboratory experiments

Авторы: Enzenhofer U., Bacher M., Sokratov S., Mahr Ch, Müller J., Worthmann U., Reiweger I.
Сборник: ISSW 2016 : Proceedings of the International Snow Science Workshop 2016, Breckenridge, CO October, 2–7, 2016
Год издания: 2016
Место издания: Superevent BV
Первая страница: 664
Последняя страница: 667
Аннотация: We here introduce our cloud chamber which enabled us to grow snow crystals from water vapour under conditions similar to those in natural clouds. The snow crystals grew as a result of water vapour supersaturation as well as due to the interaction of ice crystals and water droplets within the cloud chamber. The cloud chamber, of cylindrical shape with a volume of about 2.7 m3, was positioned in a cold room with regulated temperature ranging from −1 to −20°C. A fine mist of water droplets was fed into the cloud chamber and a short pulse of pressurized air triggered the nucleation. Observations of the size and shape distribution of the ice crystals as a function of temperature and supersaturation were consistent with literature values. Different crystal shapes – e.g. plates, columns, hollow columns, dendrites – were successfully formed at different conditions within the chamber. The produced snow was collected at the bottom of the cloud chamber and was used for further experiments and measurements.
Добавил в систему: Сократов Сергей Альфредович

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