Improving the Accuracy of Rainfall Records in the UK through the Development of a Comprehensive Undercatch Correction Methodology

该项目旨在调查降雨特征和环境条件对英国undercatch程度的影响。首先，对水文模型对降水空间分布和欠捕获现象的敏感性进行了比较分析。该分析将包括雷达和点计数据。其次，将通过室内实验、实地考察和数据分析相结合，确定降雨特征、环境条件和欠捕获程度之间的复杂关系。这种关系的时空敏感性将通过比较在较长观察期和不同地点收集的数据来评估。随后，将把上述研究的结果结合起来，为历史降雨数据制定一个强有力的渔获量下校正方法。最后，将通过比较原始数据集和修改数据集产生的输出来评估捕获下校正对各种应用的影响。总的来说，本研究旨在提高我们对欠捕获现象的理解，从而提高历史降雨记录的准确性以及由此产生的水文研究。

This project seeks to investigate the influence of rainfall characteristics and environmental conditions on undercatch extent in the context of the UK. Firstly, a comparative analysis of a hydrological model's sensitivity to both the spatial distribution of rainfall and the undercatch phenomenon will be explored. This analysis will incorporate radar and point gauge data. Secondly, the intricate relationship between rainfall characteristics, environmental conditions, and undercatch extent will be determined through a combination of laboratory experiments, fieldwork studies and data analysis. The spatiotemporal sensitivity of this relationship will be assessed by comparing data gathered over an extended observation period and from diverse range of locations. Subsequently, the findings of the proceeding studies will be combined to develop a robust undercatch correction methodology for historic rainfall data. Finally, the impact of undercatch correction on various applications will be assessed by comparing the outputs generated by original and modified datasets. Overall, this research seeks to advance our understanding of the undercatch phenomena, thereby improving the accuracy of historic rainfall records and the hydrological studies derived from them.