De Toffol S, Laghari A N, Rauch W
Unit of Environmental Engineering, University of Innsbruck, Technikerstr. 13 Innsbruck A-6020, Austria.
Water Sci Technol. 2009;59(9):1769-76. doi: 10.2166/wst.2009.182.
The fact that climate change is affecting the intensity and frequency of rainfall is well accepted in the scientific community. This is backed by a multitude of reports on the basis of daily rainfall series analysis; however, little research is available for short duration intensities. Due to its significant influence on the behaviour of urban drainage, it is critical to investigate the changes in short duration rainfall intensities. In this study different intensities relevant for the urban drainage and the total rainfall per rain event are analysed. The trend is investigated using the Mann-Kendall test. The rainfall series analysed are from the alpine region Tyrol. The results present differences depending on the duration of the intensity and the series considered, however an increase in the number of extreme events is detectable for short durations for the most series.
气候变化正在影响降雨强度和频率这一事实在科学界已得到广泛认可。这一观点得到了众多基于日降雨序列分析的报告的支持；然而，针对短历时强度的研究却很少。由于其对城市排水行为有重大影响，因此研究短历时降雨强度的变化至关重要。在本研究中，分析了与城市排水相关的不同强度以及每次降雨事件的总降雨量。使用曼-肯德尔检验来研究趋势。所分析的降雨序列来自阿尔卑斯地区的蒂罗尔。结果表明，根据强度持续时间和所考虑的序列不同而存在差异，不过对于大多数序列而言，在短历时内可检测到极端事件数量的增加。
