The latest warm period has caused the number of glaciers to decrease from 150 in 1850 to 26 today.
2
近期北半球大多数山地冰川的物质平衡为负,冰川普遍退缩,表明北半球气候暖化的趋势。
Most of the mountain glaciers in the Northern Hemisphere are retreating recently because of the negative mass balance, reflecting the warm tendency of the climate change.
Those planners probably didn't imagine the dramatic changes that were in store in the following century: the retreat or disappearance of every glacier in the park due to warming climate.