Estudio de la variabilidad climática en un transecto andino-tropical en el austro ecuatoriano mediante la identificación de teleconexiones

Abstract

The climate in south Ecuadorian is characterized by the complex climatic variability in the region, causing local hydroclimatic events that cannot be adequately prediction. Certain global signals synthetize exactly the climatic variability in the planet, which allow to identify important interactions between global and regional climate (teleconnections). However, the methodologies employed in this document use distinct thecniques for extraction of temporal features in global and precipitation signals, which could entail the detection of connection different patterns. In this sense, it turn important to analyze and contrast those methodologies in order of to establish their advantages and complementarities. In this studio, are employed two methodologies with ability to find characteristic information in different temporal scales (interannual and interdecadal), codify in climatic signals. For this analysis are used monthly signals of precipitation of two hydrographic basins, the first with Pacific regimen (coast region) and the second with Amazonic regimen (Andean region), with the finality to identify distinct process of action global climate. Among the results obtained is determined that Trans-Niño Index (TNI) is the signal of mayor interannual influence in the studio area, followed by Caribbean Index signal (CAR). On the other hand, in interdecadal scale, the results show that CAR and North Atlantic Oscillation signals (NAO) are the more important in the Andean and coast region respectively. Both methodologies grant similar results; nevertheless, the evidence of connections in distinct temporal scales and their differences in spatial analysis reveal complementarity between them.