|NATIONAL PARKS QUICKLINKS|
Backpacker Magazine – September 2007
Thanks to melting ice and snow, climate change is effecting the future of our mountains
Alaska's Glacier Bay is buried under an ice sheet 4,000 feet thick and up to 20 miles wide.
Glacier National Park has more than 150 glaciers.
Rising temperatures in the Sierra Nevada cause peak runoff earlier in the year.
The Intergovernmental Panel on Climate Change (IPCC) is established.
The Paradise Ice Caves vanish from Mt. Rainier National Park as the Paradise Glacier retreats.
Mt. Rainier's glaciated area is 20 percent smaller than it was in 1913.
Aerial photos show that North Cascades National Park has lost 13 percent of its glacier area since 1971.
Glacier National Park has 73 percent less ice coverage than it did in 1850.
The IPCC predicts a global temperature increase of 2 to 11.5°F by 2100.
The last glaciers vacate Glacier National Park as mean summer temps hit 63°F. Meanwhile, Sierra snowpack is down 30 percent, threatening California's winter tourism industry and water supply.
Colorado Rockies snowpack declines 24 percent.
Half of the Arctic's permafrost acreage has melted to a depth of 10 feet. Spring runoff in Western rivers is down 10 to 20 percent.
Average temperatures in the Sierra Nevada have risen 4.5°F, advancing snowmelt runoff by another month.