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首页> 外文期刊>Theoretical and applied climatology >A modelling investigation into lake-breeze development and convection triggering in the Nam Co Lake basin, Tibetan Plateau
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A modelling investigation into lake-breeze development and convection triggering in the Nam Co Lake basin, Tibetan Plateau

机译：青藏高原纳木错湖流域湖风发展与对流触发的模型研究

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摘要

This paper uses the cloud resolving Active Tracer High-resolution Atmospheric Model coupled to the interactive surface model Hybrid in order to investigate the diurnal development of a lake-breeze system at the Nam Co Lake on the Tibetan Plateau. Simulations with several background wind speeds are conducted, and the interaction of the lake breeze with topography and background wind in triggering moist and deep convection is studied. The model is able to adequately simulate the systems most important dynamical features such as turbulent surface fluxes and the development of a lake breeze for the different wind conditions. We identify two different mechanisms for convection triggering that are dependent on the direction of the background wind:triggering over topography, when the background wind and the lake breeze have the same flow direction, and triggering due to convergence between the lake-breeze front and the background wind. Our research also suggests that precipitation measurements at the centre of the basins on the Tibetan Plateau are not representative for the basin as a whole as precipitation is expected to occur mainly in the vicinity of the topography.
机译：为了研究青藏高原纳木错湖微风系统的日变化，本文将云解析的主动示踪剂高分辨率大气模型与交互式地表模型Hybrid结合使用。进行了几种背景风速的模拟，研究了湖风与地形和背景风在引发湿对流和深对流中的相互作用。该模型能够充分模拟系统最重要的动力学特征，例如湍流表面通量以及不同风况下湖风的发展。我们确定了两种不同的对流触发机制，这些机制取决于背景风的方向：在背景风和湖泊微风具有相同流动方向时触发地形，以及由于湖风锋与湖泊风之间的会聚而触发背景风。我们的研究还表明，青藏高原盆地中心的降水量测量值不能代表整个盆地，因为预计降水量主要发生在地形附近。

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  • 来源
    《Theoretical and applied climatology》 |2014年第2期|149-167|共19页
  • 作者

    Tobias Gerken; Tobias Biermann; Wolfgang Babel; Michael Herzog; Yaoming Ma; Thomas Foken; Hans-F. Graf;

  • 作者单位

    Department of Micrometeorology, University of Bayreuth, 95440 Bayreuth, Germany,Department of Geography, Centre for Atmospheric Science, University of Cambridge, Cambridge CB2 3EN, UK;

    Department of Micrometeorology, University of Bayreuth, 95440 Bayreuth, Germany;

    Department of Micrometeorology, University of Bayreuth, 95440 Bayreuth, Germany;

    Department of Geography, Centre for Atmospheric Science, University of Cambridge, Cambridge CB2 3EN, UK;

    Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;

    Department of Micrometeorology, University of Bayreuth, 95440 Bayreuth, Germany,Center of Ecology and Environmental Research (BayCEER), Bayreuth, Germany;

    Department of Geography, Centre for Atmospheric Science, University of Cambridge, Cambridge CB2 3EN, UK;

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