Full text of President Obama's GLACIER Conference Speech
Of course, we’re here today to discuss a challenge that will define the contours of this century more dramatically than any other -- and that’s the urgent and growing threat of a changing climate.
Our understanding of climate change advances each day. Human activity is disrupting the climate, in many ways faster than we previously thought. The science is stark. It is sharpening. It proves that this once-distant threat is now very much in the present.
In fact, the Arctic is the leading edge of climate change -- our leading indicator of what the entire planet faces. Arctic temperatures are rising about twice as fast as the global average. Over the past 60 years, Alaska has warmed about twice as fast as the rest of the United States. Last year was Alaska’s warmest year on record -- just as it was for the rest of the world. And the impacts here are very real.
Thawing permafrost destabilizes the earth on which 100,000 Alaskans live, threatening homes, damaging transportation and energy infrastructure, which could cost billions of dollars to fix.
Warmer, more acidic oceans and rivers, and the migration of entire species, threatens the livelihoods of indigenous peoples, and local economies dependent on fishing and tourism. Reduced sea levels leaves villages unprotected from floods and storm surges. Some are in imminent danger; some will have to relocate entirely. In fact, Alaska has some of the swiftest shoreline erosion rates in the world.
I recall what one Alaska Native told me at the White House a few years ago. He said, “Many of our villages are ready to slide off into the waters of Alaska, and in some cases, there will be absolutely no hope -– we will need to move many villages.”
Alaska’s fire season is now more than a month longer than it was in 1950. At one point this summer, more than 300 wildfires were burning at once. Southeast of here, in our Pacific Northwest, even the rainforest is on fire. More than 5 million acres in Alaska have already been scorched by fire this year -- that's an area about the size of Massachusetts. If you add the fires across Canada and Siberia, we’re talking 300 [30] million acres -– an area about the size of New York.
This is a threat to many communities -- but it’s also an immediate and ongoing threat to the men and women who put their lives on the line to protect ours. Less than two weeks ago, three highly trained firefighters lost their lives fighting a fire in Washington State. Another has been in critical condition. We are thankful to each and every firefighter for their heroism -- including the Canadian firefighters who’ve helped fight the fires in this state.
But the point is that climate change is no longer some far-off problem. It is happening here. It is happening now. Climate change is already disrupting our agriculture and ecosystems, our water and food supplies, our energy, our infrastructure, human health, human safety -- now. Today. And climate change is a trend that affects all trends -- economic trends, security trends. Everything will be impacted. And it becomes more dramatic with each passing year.
Already it’s changing the way Alaskans live. And considering the Arctic’s unique role in influencing the global climate, it will accelerate changes to the way that we all live.
Since 1979, the summer sea ice in the Arctic has decreased by more than 40 percent -- a decrease that has dramatically accelerated over the past two decades. One new study estimates that Alaska’s glaciers alone lose about 75 gigatons -- that’s 75 billion tons -- of ice each year.
To put that in perspective, one scientist described a gigaton of ice as a block the size of the National Mall in Washington -- from Congress all the way to the Lincoln Memorial, four times as tall as the Washington Monument. Now imagine 75 of those ice blocks. That’s what Alaska’s glaciers alone lose each year. The pace of melting is only getting faster. It’s now twice what it was between 1950 and 2000 -- twice as fast as it was just a little over a decade ago. And it’s one of the reasons why sea levels rose by about eight inches over the last century, and why they’re projected to rise another one to four feet this century.
Consider, as well, that many of the fires burning today are actually burning through the permafrost in the Arctic. So this permafrost stores massive amounts of carbon. When the permafrost is no longer permanent, when it thaws or burns, these gases are released into our atmosphere over time, and that could mean that the Arctic may become a new source of emissions that further accelerates global warming.
So if we do nothing, temperatures in Alaska are projected to rise between six and 12 degrees by the end of the century, triggering more melting, more fires, more thawing of the permafrost, a negative feedback loop, a cycle -- warming leading to more warming -- that we do not want to be a part of.
And the fact is that climate is changing faster than our efforts to address it. That, ladies and gentlemen, must change. We’re not acting fast enough.
I’ve come here today, as the leader of the world’s largest economy and its second largest emitter, to say that the United States recognizes our role in creating this problem, and we embrace our responsibility to help solve it. And I believe we can solve it. That’s the good news. Even if we cannot reverse the damage that we’ve already caused, we have the means -- the scientific imagination and technological innovation -- to avoid irreparable harm.