Inland water bodies in Chile can locally increase rainfall intensity

Roberto Pizarro, Pablo Garcia-Chevesich, Rodrigo Valdes, Francina Dominguez, Faisal Hossain, Peter Ffolliott, Claudio Olivares, Carolina Morales, Francisco Balocchi, Per Bro

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Analysis of precipitation observations from Chile indicated that man-made water reservoirs might be affecting the intensity of extreme precipitation events. Fifty rain gauges were used to evaluate rainfall intensities under different climates, using the Gumbel method (T= 5 and 100. years) and average maximum recorded rainfall intensities to construct IDF curves for each station. A spatial analysis of the stations was undertaken to establish graphical relationships on documented maximum annual rainfall intensities for 1. h and those obtained by the Gumbel method as a function of latitude, longitude, elevation, and the distance from water bodies. The Mann-Whitney U test was applied with an error of 5%. Values obtained from stations located close to water bodies were compared to those located away from them. The results show significant changes in dryer climates.

Original languageEnglish (US)
Pages (from-to)56-63
Number of pages8
JournalJournal of Hydrology
Volume481
DOIs
StatePublished - Feb 25 2013

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Keywords

  • Chile
  • Local climate
  • Precipitation recycling
  • Reservoirs
  • Water bodies

ASJC Scopus subject areas

  • Water Science and Technology

Cite this

Pizarro, R., Garcia-Chevesich, P., Valdes, R., Dominguez, F., Hossain, F., Ffolliott, P., Olivares, C., Morales, C., Balocchi, F., & Bro, P. (2013). Inland water bodies in Chile can locally increase rainfall intensity. Journal of Hydrology, 481, 56-63. https://doi.org/10.1016/j.jhydrol.2012.12.012