Time-dependent Characteristics of the Heterogeneous Nucleation of Ice PDF Download
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Author: Macdonald Physics Laboratory. Stormy Weather Group
Publisher: Macdonald Physics Laboratory ; Stormy Weather Group
ISBN:
Category : Atmospheric nucleation
Languages : en
Pages : 31
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Book Description
The dependence of heterogeneous nucleation of supercooled water drops on temperature and the duration of supercooling has been studied. The rain-sized drops were placed on an oiled aluminium surface and thermoelectric refrigeration was used to provide constant cooling-rates and to maintain constant temperatures. Once-distilled tap-water and melted snow and hail were investigated. Only the first two of these showed definite time-dependent properties. The experimental results are inconsistent with the hypothesis that all drops have equal probability of nucleation (stochastic hypothesis), and also with the hypothesis that the freezing temperature of a drop is the characteristic temperature of one of the impurities contained in the drop (''singular'' hypothesis). The results can be explained if the existence of a variety of nuclei is recognized, each of which is most likely to cause nucleation in a different range of temperatures, and if the nucleation probability associated with each impurity is a function of the temperature of the sample. (Author).
Author: Macdonald Physics Laboratory. Stormy Weather Group
Publisher: Macdonald Physics Laboratory ; Stormy Weather Group
ISBN:
Category : Atmospheric nucleation
Languages : en
Pages : 31
Get Book Here
Book Description
The dependence of heterogeneous nucleation of supercooled water drops on temperature and the duration of supercooling has been studied. The rain-sized drops were placed on an oiled aluminium surface and thermoelectric refrigeration was used to provide constant cooling-rates and to maintain constant temperatures. Once-distilled tap-water and melted snow and hail were investigated. Only the first two of these showed definite time-dependent properties. The experimental results are inconsistent with the hypothesis that all drops have equal probability of nucleation (stochastic hypothesis), and also with the hypothesis that the freezing temperature of a drop is the characteristic temperature of one of the impurities contained in the drop (''singular'' hypothesis). The results can be explained if the existence of a variety of nuclei is recognized, each of which is most likely to cause nucleation in a different range of temperatures, and if the nucleation probability associated with each impurity is a function of the temperature of the sample. (Author).
Author: Gabor Vali
Publisher:
ISBN:
Category : Atmospheric nucleation
Languages : en
Pages : 31
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Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 692
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Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 684
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Author:
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ISBN:
Category : Science
Languages : en
Pages : 1776
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Author: Constantin Andronache
Publisher: Elsevier
ISBN: 012810550X
Category : Science
Languages : en
Pages : 302
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Mixed-Phase Clouds: Observations and Modeling presents advanced research topics on mixed-phase clouds. As the societal impacts of extreme weather and its forecasting grow, there is a continuous need to refine atmospheric observations, techniques and numerical models. Understanding the role of clouds in the atmosphere is increasingly vital for current applications, such as prediction and prevention of aircraft icing, weather modification, and the assessment of the effects of cloud phase partition in climate models. This book provides the essential information needed to address these problems with a focus on current observations, simulations and applications. Provides in-depth knowledge and simulation of mixed-phase clouds over many regions of Earth, explaining their role in weather and climate Features current research examples and case studies, including those on advanced research methods from authors with experience in both academia and the industry Discusses the latest advances in this subject area, providing the reader with access to best practices for remote sensing and numerical modeling
Author:
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ISBN:
Category : Physics
Languages : en
Pages : 1410
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ISBN:
Category : Frozen ground
Languages : en
Pages : 794
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Author: Stanley Changnon
Publisher: Springer
ISBN: 193570429X
Category : Science
Languages : en
Pages : 184
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The objects of the American Meteorological Society are "the development and dissemination of knowledge of meteorology in all its phases and applications, and the advancement of its professional ideals." The organization of the Society took place in affiliation with the American Association for the Advancement of Science at Saint Louis, Missouri, December 29, 1919, and its incorporation, at Washington, D. C., January 21, 1920. The work of the Society is carried on by the Bulletin, the Journal, and Meteorological Monographs, by papers and discussions at meetings of the Society, through the offices of the Secretary and the Executive Secretary, and by correspondence. All of the Americas are represented in the membership of the Society as well as many foreign countries.
Author:
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ISBN:
Category : Antarctica
Languages : en
Pages : 404
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