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首页> 外文期刊>Journal of Glaciology >Effects of clouds on surface melting of Laohugou glacier No. 12, western Qilian Mountains, China
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Effects of clouds on surface melting of Laohugou glacier No. 12, western Qilian Mountains, China

机译：云对中国西祁连山山区12号Laohugou冰川地表熔化的影响

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摘要

We analyzed a 2-year time series of meteorological data (January 2011-December 2012) from three automatic weather stations on Laohugou glacier No. 12, western Qilian Mountains, China. Air temperature, humidity and incoming radiation were significantly correlated between the three sites, while wind speed and direction were not. In this work, we focus on the effects of clouds on other meteorological parameters and on glacier melt. On an average, similar to 18% of top-of-atmosphere short-wave radiation was attenuated by the clear-sky atmosphere, and clouds attenuated a further 12%. Most of the time the monthly average increases in net longwave radiation caused by clouds were larger than decreases in net shortwave radiation but there was a tendency to lose energy during the daytime when melting was most intense. Air temperature and wind speed related to turbulent heat flux were found to suppress glacier melt during cloudy periods, while increased water vapor pressure during cloudy days could enhance glacier melt by reducing energy loss by latent heat. From these results, we have increased the physical understanding of the significance of cloud effects on continental glaciers.
机译：我们分析了三年三年的气象数据（2012年1月至2012年12月）来自中国祁连山，中国西部祁连山12号的三个自动气象站。在三个地点之间的空气温度，湿度和进入的辐射显着相关，而风速和方向则没有。在这项工作中，我们专注于云对其他气象参数和冰川熔体的影响。平均而言，类似于18％的大气层短波辐射的透明天空气氛衰减，云减弱了12％。大多数时间由于云引起的净龙波辐射的月平均水平增加大于净短波辐射的减少，但在熔化最激烈的白天期间存在失去能量的趋势。发现与湍流热通量有关的空气温度和风速抑制冰川熔体在多云期间，而多云的日子期间的水蒸气压力可以通过降低潜热来增强冰川熔体。从这些结果来看，我们提高了对云效应对大陆冰川的重要性的身体理解。

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  • 来源
    《Journal of Glaciology》 |2018年第243期|共11页
  • 作者

    Chen Jizu; Qin Xiang; Kang Shichang; Du Wentao; Sun Weijun; Liu Yushuo;

  • 作者单位

    Chinese Acad Sci Northwest Inst Ecoenvironm &

    Resources Qilian Shan Stn Glaciol &

    Ecol Environm State Key Lab Cryospher Sci Lanzhou 730000 Gansu Peoples R China;

    Chinese Acad Sci Northwest Inst Ecoenvironm &

    Resources Qilian Shan Stn Glaciol &

    Ecol Environm State Key Lab Cryospher Sci Lanzhou 730000 Gansu Peoples R China;

    Chinese Acad Sci Northwest Inst Ecoenvironm &

    Resources Qilian Shan Stn Glaciol &

    Ecol Environm State Key Lab Cryospher Sci Lanzhou 730000 Gansu Peoples R China;

    Chinese Acad Sci Northwest Inst Ecoenvironm &

    Resources Qilian Shan Stn Glaciol &

    Ecol Environm State Key Lab Cryospher Sci Lanzhou 730000 Gansu Peoples R China;

    Shandong Normal Univ Coll Populat Resources &

    Environm Jinan 250000 Shandong Peoples R China;

    Chinese Acad Sci Northwest Inst Ecoenvironm &

    Resources Qilian Shan Stn Glaciol &

    Ecol Environm State Key Lab Cryospher Sci Lanzhou 730000 Gansu Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 冰川;
  • 关键词

    cloud effect; cloud forcing; glacier; longwave-equivalent cloudiness; surface radiation;

    机译：云效应;云强迫;冰川;长波相当云;表面辐射;

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