Análisis climatológico dinámico de la transición entre el periodo nival seco 2010-2014 a uno normal 2015-2016, en los Andes Áridos.

The agricultural sectors and the populations of Cuyo and central Chile have an increasing interest in knowing the availability of the hidric resource that makes possible the activities in their respective cultivated spaces. It depends on the amount of snow precipitated in the river basins with high mountain snow regimes, located in the surroundings of the Arid Andes; Presenting great interannual and seasonal variability. The large scale factors generate such variabilities that are manifested as slow changes leading to high frequency, associated with precipitation in the region. Most of them are consistent with the ENSO phases and in particular with the SST (Sea Surface Temperatures) in the Niño 3 + 4 area, followed by the ASPSO (Subtropical Anticyclonic East South Pacific), the PDO (Pacific Decadal Oscillation) and others. In that context, these regions suffered the consequences of a drought from 2010 with deficient hidric seasons including 2014. The 2015 caused the interruption of the same due to very favorable edge conditions. However the 2016 in spite of that by its amount snowfall the cut that made the 2015, had edge conditions very dissimiles to the previous one. The purpose of this paper is to describe statistically and dynamically the three snow seasons mentioned, in order to discriminate the factors and agents that produced the corresponding hidric resource, and in this way to elucidate apparent contradictions between the respective hemispheric border conditions and the runoff of the Rivers that depend on them. In addition, to identify other factors not taken into account in previous theoretical analyzes. [ABSTRACT FROM AUTHOR]