Temporary Variability of Rain in Pedregal Gorge due to the Effects of Climate Change, Lima – Perú

Authors

  • Luis Metzger, Doris Esenarro, Ciro Rodriguez, Oswaldo Alfaro, Pervis Paredes

Abstract

The climate is an essential factor in the sustainable and economic development of a country; its study helps to classify the different types of environments to better plan economic and productive activities. The objective of this study is to analyze the information of precipitation in Pedregal Ravine between the years 1980 and 2017 and to determine its behavior and temporal variability. Between January and March 2017, heavy rains occurred on the northern and central coast of Peru, which caused flooding and debris flow that affected the departments of Tumbes, Piura, Lambayeque, La Libertad, and Lima. This event has been described in Peru as "Coastal Child," and according to INDECI reports, it caused the death of 100 people. There are no precipitation stations in Pedregal Ravine, but the Chosica and Santa Eulalia stations were used as a reference, which is located 3 km from the study zone. The Matucana and Carampoma stations located in the upper part were also analyzed in order to better understand the spatial behavior of precipitation in the entire basin. Two statistical tests have been used to detect changes in the precipitation time series: Mann Kendall and Student’s T. The results of these tests indicate that there is a change in the behavior of precipitation in Pedregal Ravine between the period of 1980 and 2017; this change is a tendency to increase rainfall.

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Published

2020-05-24

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Section

Articles