Hydrologic response of a semi-arid watershed to spatial and temporal characteristics of convective rain cells

被引：41

作者：

Yakir, H. ^{[1
]}

Morin, E. ^{[1
]}

机构：

[1] Hebrew Univ Jerusalem, Dept Geog, IL-91905 Jerusalem, Israel

来源：

HYDROLOGY AND EARTH SYSTEM SCIENCES | 2011年 / 15卷 / 01期

基金：

以色列科学基金会;

关键词：

SOUTHERN ISRAEL; MODEL; RUNOFF; VARIABILITY; METHODOLOGY; PROPAGATION; RADAR; STORM; IDENTIFICATION; UNCERTAINTY;

D O I：

10.5194/hess-15-393-2011

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

Rain can be measured and represented in many ways such as point data from rain gauges, grid data from meteorological radar, or interpolated data. In this paper we represent rain fields by implementing a rain cell model of convective rain cells. The rain fields are used as an input to a hydrological model to test the watershed response to spatial and temporal characteristics of the rain cells. As a case study we tested an extreme storm event over a semi-arid watershed in southern Israel. The rain cell model was found to simulate the rain storm adequately. The use of these modeled cells allowed us to test the sensitivity of the watershed hydrological response to rain cell characteristics and it was found that the watershed is mainly sensitive to the starting location of the rain cell. Relatively small changes in the rain cell's location, speed and direction may increase watershed peak discharge by three-fold.

引用

页码：393 / 404

页数：12

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