Análisis de las temperaturas medias y sus extremos a partir de diferentes índices durante el período 1966-2015 En El Norte Grande Chileno

According to the AR5 from the Intergovernmental Panel on Climate Change, northern Chile is one of the most affected region by the next years-changes in the atmospheric dynamics. Within this general context, the temperature and its modifications constitute a capital pillar. The behavior of the temperatures from 4 observatories in northern Chile have been studied. To detect possible trends in the time series, the non-parametrical Mann-Kendall test has been applied to the monthly mean temperatures in a first place, and, after that, to twelve different indices calculated according to the daily extreme temperature from 1966 to 2015. While monthly means do not show a significant trend in the studied period, coinciding with studies indicating the observation of the Global Warming Hiatus, the other extremes indices show significant (90%) trends, indicating a clear increase in minimum temperatures and a clear decrease in the number of annual days with minimum temperatures in the lower percentile.