Temporal and spatial variability of rainfall at urban hydrological scales

被引：0
|
作者：
Emmanuel, I. [1 ]
Leblois, E. [2 ]
Andrieu, H. [1 ,3 ]
Flahaut, B. [1 ]
机构：
[1] PRES L UNAM, Ifsttar, Dept GER, CS4, F-44341 Bouguenais, France
[2] Irstea, F-69009 Lyon, France
[3] PRES LUNAM, IRSTV FR, CNRS 2488, Dept GER, Bouguenais, France
来源：
WEATHER RADAR AND HYDROLOGY | 2012年 / 351卷
关键词：
rainfall structure; geostatistics; hydrological scales;
D O I：
暂无
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
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 Treillieres (10 km north of Nantes, France) in 2009. This radar device provides rainfall radar images with a high level of spatial resolution (250 x 250 m(2)) 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.
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页码：261 / +
页数：2
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