Análisis del comportamiento de las frecuencias de valores extremos de temperatura y precipitación en zonas de alta montaña: caso de estudio volcán Antisana

Abstract

This study provides an analysis of time series of temperature and precipitation from three weather stations: Mica, SAMA and ORE, belonging to the Antisana Volcano area, along with a time series of greater long-term to 30 years of weather station INAMHI in order to verify the existence of trends associated with climate change and annual frequency of extreme values; In addition, several basic indexes recommended by "Expert Team Climate Change Detection Monitoring and Indexes" (ETCCDMI) are calculated for the mentioned stations, which are used for characterization, monitoring and detection of Climate Change. First: a double exponential smoothing of the data was used through the STATGRAPHICS program; Second, an analysis of the frequency of the number of days per year with extremes of temperature: maximum and minimum, finally, the calculation of the indices was performed. The long-term weather station has a degree of confidence of 99%, showing a trend to increase the number of days per year with maximum temperatures and decrease the number of days with minimum temperatures, with three basic rates increase shown in the number days and warm nights and a decrease in daily and monthly minimum temperature values.