Chilean lake turns to desert, sounding climate change alarm

Chilean lake turns to desert, sounding climate change alarm

Lake in Chile is disappearing:

The Penuelas reservoir in central Chile was until twenty years ago the main source of water for the city of Valparaiso, holding enough water for 38,000 Olympic-size swimming pools. Water for only two pools now remains.

Normally, low-pressure storms from the Pacific unload precipitation over Chile in winter, recharging aquifers and packing the Andes mountains with snow.

But naturally occurring warming of the sea off Chile’s coast, which blocks storms from arriving, has been intensified by rising global sea temperature, according to a global study on sea temperature and rainfall deficits. Ozone depletion and greenhouse gasses in the Antarctic, meanwhile, exacerbate weather patterns that draw storms away from Chile, according to a study on variables affecting Antarctic weather.

Analysis of tree rings going back 400 years shows how rare the current drought is[…]. It is totally unrivalled for duration or intensity.

Posted by Stefan in Allgemein, 0 comments