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    The Phase Curve of Venus and the Nature of its Clouds

    Source: Journal of the Atmospheric Sciences:;1968:;Volume( 025 ):;issue: 004::page 617
    Author:
    Arking, Albert
    ,
    Potter, John
    DOI: 10.1175/1520-0469(1968)025<0617:TPCOVA>2.0.CO;2
    Publisher: American Meteorological Society
    Abstract: Theoretical models of the Venus cloud layer are compared with observations in the U, B and V spectral regions. It is found that the models are sensitive to the detailed scattering properties of the particles. A model of a terrestrial type cloud containing spherical water droplets or ice particles with radii distributed around 4 ? provides good agreement with the observed phase curve of Venus, superior to that obtained in previously published calculations. There is a small disagreement with the observations at low phase angles, suggesting the particles may have a slightly higher index of refraction than for water. However, observations are sparse and uncertain at these angles and improved data are needed to resolve this point. The comparison with observations leads to the following conclusions: the particles in the cloud layer must be of micron-size or larger, and are highly transparent; highly reflective but opaque particles are excluded; and scattering properties of the cloud particles on Venus resemble those of water droplets, ice particles, or particles of transparent minerals such as quartz.
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      The Phase Curve of Venus and the Nature of its Clouds

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4151143
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    contributor authorArking, Albert
    contributor authorPotter, John
    date accessioned2017-06-09T14:14:31Z
    date available2017-06-09T14:14:31Z
    date copyright1968/07/01
    date issued1968
    identifier issn0022-4928
    identifier otherams-15468.pdf
    identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4151143
    description abstractTheoretical models of the Venus cloud layer are compared with observations in the U, B and V spectral regions. It is found that the models are sensitive to the detailed scattering properties of the particles. A model of a terrestrial type cloud containing spherical water droplets or ice particles with radii distributed around 4 ? provides good agreement with the observed phase curve of Venus, superior to that obtained in previously published calculations. There is a small disagreement with the observations at low phase angles, suggesting the particles may have a slightly higher index of refraction than for water. However, observations are sparse and uncertain at these angles and improved data are needed to resolve this point. The comparison with observations leads to the following conclusions: the particles in the cloud layer must be of micron-size or larger, and are highly transparent; highly reflective but opaque particles are excluded; and scattering properties of the cloud particles on Venus resemble those of water droplets, ice particles, or particles of transparent minerals such as quartz.
    publisherAmerican Meteorological Society
    titleThe Phase Curve of Venus and the Nature of its Clouds
    typeJournal Paper
    journal volume25
    journal issue4
    journal titleJournal of the Atmospheric Sciences
    identifier doi10.1175/1520-0469(1968)025<0617:TPCOVA>2.0.CO;2
    journal fristpage617
    journal lastpage628
    treeJournal of the Atmospheric Sciences:;1968:;Volume( 025 ):;issue: 004
    contenttypeFulltext
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    DSpace software copyright © 2002-2015  DuraSpace
    نرم افزار کتابخانه دیجیتال "دی اسپیس" فارسی شده توسط یابش برای کتابخانه های ایرانی | تماس با یابش
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