Influence of rainfall time series sample rate in the improvement of decision-making based on high intensity rainfall events

Abstract

Abstract - This study aims Lo assess whether data acquisition frequency can affect the understanding of high-intensity precipitation events. Time series from a weighing gauge and a weighhridge gauge installed at the sarne site were analysed, with rainfall intensity data acquisition frequencies of 10 seconds and 5 minutes, respectively. To check the consistency of the data ohtained by the two types of rainfall measuring instruments, a correlation analysis was carried out between the two time series. The results relating to acquisition frequency showed that, for an acquisition frequency of 5 minutes. there are significant losses of information (especially during heavy rainfall events) compared to acquisition frequencies of l0 seconds. The correlation analysis showed that the gauges are measuring correctly and that the data is accurate.