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LAND SURFACE PROCESSES AND THE POTENTIAL FOR CONVECTIVE PRECIPITATION

机译:土地表面过程和对流降水的潜力

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摘要

The impact of the land surface on the potential for precipitating convection is examined. To do so, an analytical expression that relates boundary layer equivalent potential temperature to the surface evaporative fraction is derived by means of the slab model of the convective boundary layer. Analysis of the resulting expression shows that the equivalent potential temperature increases with the evaporative fraction under most circumstances, except for very dry atmospheres, and that this increase is enhanced in the presence of a low-level moist layer. [References: 29]
机译:研究了陆地表面对降水对流的影响。为此,借助对流边界层的平板模型推导了将边界层等效电位温度与表面蒸发分数相关联的解析表达式。对所得表达式的分析表明,在大多数情况下,除了非常干燥的气氛外,等效电位温度随蒸发分数的增加而增加,并且在存在低水平的湿润层的情况下,这种增加得到了增强。 [参考:29]

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