2008-04-23
Scientists Study Arctic Haze for Clues to Rapid Melting. By Dan Joling, AP, April 23, 2008. "While carbon dioxide and other greenhouse gases that trap the Earth's heat are believed to be the chief cause of global warming, scientists suspect that airborne particles known as aerosols are also contributing to the Arctic meltdown. To prove their suspicions, they are analyzing the haze, using mass spectroscopy and other technology to identify what is in it, where it came from and how it interacts with the clouds, the sunlight and the snow cover. Their air samples have been found to contain dust from Asian deserts, salts that swell up moisture, particles from incomplete burning of organic material from forest and cooking fires, and all manner of nasties emitted by automobile tailpipes, factory smokestacks and power plants. Collectively, they are a United Nations of pollution. Through chemical analysis, the particles can be traced to their sources throughout Asia, Europe and North America."
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