Resumen

VICARIO, Leticia et al. Characterization of Meteorological Droughts in the Central Argentina. Tecnol. cienc. agua [online]. 2015, vol.6, n.1, pp.153-165. ISSN 2007-2422.

Varying degrees of droughts repeatedly affect several regions in Argentina. Given the agricultural-livestock character of central Argentina, the analysis and assessment of droughts in that region is economically and strategically important. This situation is even more relevant since some of the largest cities in the country are located in this area. The present work analyzes the spatial variability of the meteorological droughts in the study area using the standardized precipitation index (SPI) for sub-areas and the region, while also taking into account the influence of ENSO. To identify the sub-areas affected by hydrometeorological deficits, annual mean rainfall was analyzed in 15 locations in the study area. Because of its widespread spatial and temporal availability, this variable was adopted a priori as representative of the processes studied by the present work. Criteria and statistical techniques were applied to this variable and monthly rain gauge series were used from stations in the provinces of Cordoba, Santa Fe and Entre Rios for the period 1980-2009. Three groups of stations with similar pluviometric behavior were identified, particularly behaviors related to intense droughts, thereby identifying spatial scales or sub-areas of influence corresponding to the hydrometeorological deficit.

Palabras llave : Central region of Argentina; meteorological droughts; multivariate analysis; SPI.

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