(Western Glacier of Salenques: left, 1990; dcha., 2005 (author: J. Camins))
The Aragonese Pyrenean glaciers have experienced a marked decline in surface and volume since the 1980s. In several previous contributions we have analyzed these patterns of degradation both at a general scale, as well as massifs, confirming how the conjunction of climatic elements at regional level (increase in temperatures, decrease in winter rainfall) and local factors (linked to topography) has brought to the different glacial apparatuses to the state that we can observe today.
Below, updated, the surface extension data (and other associated parameters) of the glaciers and ice makers located in the massifs of Hells, Monte Perdido, Posets and Maladeta, the only ones that remain glaciers (the recent regressive evolution has taken to the total deglaciation of the massifs of Balaitús, Vignemale, La Munia and Perdiguero). The working method is based on the integration of different observations (terrestrial, aerial) in a Geographic Information System (GIS), which allows an effective analysis and updating of the results.