Determinación de la variabilidad climática mediante la aplicación de índices de cambio climático en el centro norte de la región interandina en el Ecuador

Abstract

The present study analyzed the behavior of extreme daily temperature and precipitation events in the north central part of the inter-Andean region of Ecuador between the years 1965 and 2015. After a data quality control and a homogeneity analysis carried out with Hydracces, RHtest and the Climatol packages developed in R, the largest continuous and homogeneous daily database for the area and the study period was generated. This database consists of 50 stations distributed homogeneously in the territory. From this new database, 24 climate change indexes recommended by the Expert Team on Climate Change Detection and Indices (ECTCCDI) were calculated through the RClimdex software with trends calculated by linear least squares regression and the Mann-Kendall test. Finally, the temporal and spatial variability of the 24 indices was analyzed. Significant differences were detected in the trend analysis in the northern and southern region of the study area. On the other hand, a change in trend was detected in the precipitation and temperature indexes since the 90s.