Temporal and spatial variability of rainfall at urban hydrological scales
EMMANUEL ; LEBLOIS ; ANDRIEU ; FLAHAUT
Type de document
COMMUNICATION AVEC ACTES INTERNATIONAL (ACTI)
Langue
anglais
Auteur
EMMANUEL ; LEBLOIS ; ANDRIEU ; FLAHAUT
Résumé / Abstract
The main objective of this paper is to characterize the spatial and temporal variability of rainfall at scales that are consistent with urban hydrological applications. In this way, a total of 24 rain periods have been analysed according to a geostatistical approach. This analysis has focused on the non-zero rainfall variogram. The studied rain periods were recorded by the weather radar of Treillières (10 km north of Nantes, France) in 2009. This radar device provides rainfall radar images with a high level of spatial resolution (250 m × 250 m) and instantaneous temporal resolution. Results indicated four different types of rainfall fields, which display very different variability scales, including double structures within the same field. This study highlights the benefit of radar images featuring high temporal and spatial resolution, which in turn allow studying small-scale variability.
Source
IAHS Red Book, num. 351, pp 261-266 p.
Editeur
INTERNATIONAL ASSOCIATION OF HYDROLOGICAL SCIENCES - IAHS
