In reply to iceaxe: its main effect is the waters as the warmer waters of the western pacific swap with the cool, nutrient rich waters of the east. this affects the food chain for all the fishes/whales/seals/plankton etc etc. Yes it does effect the world weather but the local problems are far superior to that of the amount of snow falling in the Andes.
just bear a thought for that Juan, the Fisherman in Chile whos livelyhood has gone as there are no fish to catch!