What do we know about high-altitude precipitation in the semi-arid Andes of Chile ?

被引：4

作者：

Bourgin, Pierre-Yves ^{[3
]}

Andreassian, Vazken ^{[3
]}

Gascoin, Simon ^{[2
,4
]}

Valery, Audrey ^{[1
]}

机构：

[1] Tractebel Engn Coyne & Bellier, F-92622 Gennevilliers, France

[2] CEAZA, La Serena, Chile

[3] Irstea, UR HBAN, F-92163 Antony, France

[4] CESBIO, F-31401 Toulouse 9, France

来源：

HOUILLE BLANCHE-REVUE INTERNATIONALE DE L EAU | 2012年 / 02期

关键词：

Precipitation; spatial interpolation method; extrapolation; altitude; altitudinal corrections; validation; water equivalent; water balance;

D O I：

10.1051/lhb/2012010

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

Mapping precipitations on a regular grid is often required for hydrological and ecological modelling. The spatial interpolation methods are generally used to estimate such a distribution from ground-based measurements. In the case of mountainous areas, the estimation of precipitation amounts is still a challenging task and the results of spatial interpolation should be verified as much as possible. Here we describe a three-steps method for the validation of a precipitation map. This is used in the context of a mountainous semi-arid region, the Norte Chico in Chile (26 degrees S-32 degrees S). The implementation of this validation method showed the benefits of an interpolation method developed by Valery [2010] for mountainous areas. The hydrological balance of the high-altitude watersheds is now more realistic.

引用

页码：12 / 17

页数：6

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