This paper attempts to evaluate climate cooling (ºC) during the glacial expansion phases using the product GTV•_ELA, where GTV is the vertical air temperature gradient (ºC/m) and _ELA (m) the difference in level observed between the Equilibrium Line Altitude (ELA) reconstructions for current and past glaciers. With this aim the Area x Altitude Balance Ratio-(AABR) method was used to produce reconstructions of present ELAs (2002-2010) and paleoELAs corresponding to the last glacier advance phase. The reconstructions were produced in three study areas located along a N-S transect of the western cordillera in the Central Andes: the south-western sector of the Nevado Hualcán (9ºS, 77ºW; Giráldez 2011); the southern slope of the Cordillera Pariaqaqa (12ºS, 76ºW; Quirós, 2013) and the NW, NE, SE and SW quadrants of the Nevado Coropuna (16ºS, 72ºW; García 2013; Úbeda 2011; Campos...

Páginas 76-79.