The Arctic is warming twice as fast as the rest of the planet, and this summer its sea ice is melting at a near-record pace. The sun is heating the newly open water, so it will take longer to refreeze this winter, and the resulting thinner ice will melt more easily next summer.
At the same time, warm Pacific Ocean water is pulsing through the Bering Strait into the Arctic basin, helping melt a large area of sea ice between Alaska and eastern Siberia. Scientists are just beginning to learn how this exposed water has changed the movement of heat energy and major air currents across the Arctic basin, in turn producing winds that push remaining sea ice down the coasts of Greenland into the Atlantic.
Globally, 2010 is on track to be the warmest year on record. In regions around the world, indications abound that earth’s climate is quickly changing, like the devastating mudslides in China and weeks of searing heat in Russia. But in the world’s capitals, movement on climate policy has nearly stopped.
Democrats in the Senate decided last month that they wouldn’t push for approval of a climate bill. In Canada, Australia, Japan and countries across Europe, the global economic crisis and other near-term concerns have pushed climate issues to the back burner. For China and India, economic growth and energy security are more vital priorities.
Climate policy is gridlocked, and there’s virtually no chance of a breakthrough. Many factors have conspired to produce this situation. Human beings are notoriously poor at responding to problems that develop incrementally. And most of us aren’t eager to change our lifestyles by sharply reducing our energy consumption.