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Feeling the heat: Global warming in Alaska

Global warming is wreaking havoc in Alaska. Over the past 40 years, annual
temperatures have increased 4 to 5 degrees Fahrenheit, and winter
temperatures have warmed 8 to 10 degrees Fahrenheit. For many reasons,
Alaska Natives are feeling the heat most dramatically and adversely.

Scientists agree that Alaska has warmed more than any other place on Earth
- over four times the global average. This significant, on-the-ground
temperature increase is consistent with previous climactic predictions. For
years, scientists have determined that global warming would initially be
most evident at high latitudes and increasingly substantial in the
mid-latitudes. In essence, Alaska is the tip of the melting iceberg, or the
canary in the coal mine with an impending heat stroke.

Alaska Natives are the people who rely most on Alaska's ice, seas, marine
mammals and traditional lifestyles, and therefore experience global
warming's adverse impacts most acutely. The polar ice cap's retreat due to
global warming threatens a vast, circumpolar ecosystem and its polar bears,
walruses, seals and whales, while northern Alaska communities are left
increasingly vulnerable to unprecedented storm-wave erosion. Roads,
buildings and other structures are collapsing as ice-rich permafrost soils

These and other dramatic occurrences in Alaska portend what's in store for
the rest of the United States - and the planet if we do not act now to
reduce greenhouse gases.

The evidence of global warming in the "last frontier" is widespread. The
Yukon River's temperature has recently increased more than 10 degrees,
resulting in diseased salmon: which negatively affects Alaska Natives
throughout the drainage. Spruce and other trees throughout Alaska are dying
at historically high rates due to global warming-induced insect
infestations. Glaciers are melting at unprecedented rates.

Virtually every aspect of traditional Alaska Native life is impacted. As
noted in the recently released Arctic Climate Impact Assessment, indigenous
people report that not only is sea ice declining, its quality and timing
are changing, with important negative repercussions for marine hunters.
Others report that berries are reduced in quality and quantity. There is
widespread concern about caribou habitat diminishing as larger vegetation
moves northward.

Because of these and other dramatic changes, traditional knowledge is
jeopardized, as are the cultural structures and nutritional needs of
Alaska's indigenous people.

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Perhaps most visually, several Native communities are literally starting to
fall into the sea; and this is just the beginning. The Alaska Native
village of Shishmaref, in particular, has already lost many buildings to
the ocean due to melting permafrost and increased storms from global
warming. The cost to move Shishmaref alone, with its 600 residents, has
recently been estimated to be over $150 million.

Alaska helps demonstrate that the costs of not dealing with global warming
exceed the costs of reducing greenhouse gas emissions. Clearly, we need to
move quickly to address this problem. There is an international scientific
consensus that most of the warming observed over the last 50 years is
attributable to human activities.

It is clear from ice cores and other evidence of past climate conditions
that rising atmospheric carbon dioxide levels are correlated with rising
global temperatures. Primarily because of the burning of oil, gas and coal
by humans, carbon dioxide and other heat-trapping gases in the atmosphere
have increased by 35 percent since the start of the Industrial Revolution.
We need to reduce greenhouse gas emissions now.

The threat to the world, to the nation and to Alaska from global warming is
staggering. Our nation must do something to address global warming by
capping carbon emissions: and the state has a critical role to play as the
harbinger of things to come if global warming is not addressed.

Most Americans - including most decision makers - do not understand the
astounding scope, ecological significance, and economic and social costs
being experienced, especially by First Nation people on American soil, in
Alaska, right now due to global warming.

This is not only an ecological issue: it is a human rights issue of
tremendous proportions.

Deborah L Williams is executive director of the Alaska Conservation