Resumo

AGOSTA, Eduardo Andres  e  MARTIN, Paula Beatriz. Fluctuaciones interanuales a multidecádicas de la temperatura de verano en el centro-oeste de Argentina y procesos atmosféricos/oceánicos/astronómicos globales. Geoacta [online]. 2008, vol.33, pp.48-56. ISSN 1852-7744.

The summer (Oct-Mar) temperature in Central-West Argentina (CWA, 28°-36°S y 65°-70°W) shows a behaviour spatially coherent and temporally in phase at interannual to interdecadal scales. (Agosta et al. 2004). It is found the air temperature shows significant cuasi-oscillations in the spectral bands of roughly 11-yr. and 18- yr. The former is linked to the solar forcing, the latter to the effects of the climate transition of the summer 1976/77 (IPCC 2001). This transition transitorily affected the low-frequency variability of the temperature as an interference phenomenon upon the cuasi-11-yr.-solar cycle domain.

Palavras-chave : Climate Change Solar Cycle; Temperature; Cosmic Rays.

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