Abstract The objective of this study was the estimation of the effect of droplet structure of diurnal precipitation totals, measured with Thies Clima disdrometer, on the value of surface runoff from three kinds of surface used in urban areas, i.e. a roof surface covered with small-grain roofing paper, a car park surface of openwork concrete slabs, and a tarmac surface, and the resultant reduction of infiltration from atmospheric precipitation. The detailed comparative analysis of diurnal precipitation totals in the aspect of droplet structure, structure of increasing influx of precipitation water to the surface, and changes of air temperature-humidity conditions, allowed preliminary elucidation of the effect of those factors on the values of the runoff indices for the different hardened surfaces. The analysis of reduction of infiltration presents the level of supply losses resulting from the use of surface covering systems with various degrees of permeability to precipitation water. A solution that can minimise the indicated losses can be an approach to precipitation water management assuming interception of possibly the largest amounts of non-productive surface runoff waters, and then using that water.

中文翻译：

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降水结构作为供水量减少的指标供给土壤剖面

摘要 本研究的目的是估计日降水总量的液滴结构对城市地区使用的三种表面的地表径流值的影响，即用小雨覆盖的屋顶表面，用 Thies Clima disdrometer 测量。谷物屋面纸、镂空混凝土板的停车场表面和柏油碎石表面，以及由此产生的大气降水渗透的减少。对日降水总量从液滴结构、降水增加地表进水结构、气温湿度条件变化等方面进行了详细的对比分析，初步阐明了这些因素对径流值的影响不同硬化表面的指数。对渗透减少的分析显示了由于使用具有不同程度的降水渗透性的表面覆盖系统而导致的供应损失水平。可以最大限度地减少指示损失的解决方案可以是一种降水水管理方法，假设拦截了可能最大量的非生产性地表径流水，然后使用这些水。