An Alaska polar bear keeps close to her young along the Beaufort Sea coast in Arctic National Wildlife Refuge. Melting sea ice has made the polar bear a symbol of climate change impact. Photo: Susanne Miller, USFWS. Download.
With an area of more than 375 million acres extending 2,000 miles from east to west and 1,100 miles from north to south, Alaska dwarfs other states. The northernmost state is also unmatched in its range of climates and habitats — and nearly all are feeling impacts from climate change.
During the last half-century, Alaska has seen some of the most rapid warming on earth, with temperatures rising 1 to almost 4 degrees Fahrenheit across its climate regions and ecosystems. By the year 2100, the average annual temperature of Alaska’s North Slope is projected to rise another 10 degrees Fahrenheit.
“One big difference between Alaska and the Lower 48 is that here we’re dealing with impacts that have already occurred, not just forecasts of change,” says John Morton, Supervisory Fish and Wildlife Biologist at Alaska’s Kenai National Wildlife Refuge. “And because Alaska hasn’t undergone widespread landscape change from non-climate stressors such as agriculture and development, the impacts of climate change aren’t masked as they are elsewhere.”