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Scientists fear global warming will generate longer, more expensive wildfire seasons
Global warming could stoke ferocious wildfires that will be more difficult and costly to fight and might drastically alter the environment in parts of the world, some scientists warn. Recent studies have tied rising temperatures to an upswing in forest fires, particularly in the western United States. The wildfire season that just ended in the U.S. was the most severe _ and expensive _ on record with more than 89,000 fires scorching 9.5 million acres (3.8 million hectares), according to the National Interagency Fire Center. The U.S. Forest Service spent $1.5 billion (euro1.2 billion) fighting those fires _ about $100 million (euro78 million) over budget. Wildfire season typically peaks in late summer and early fall. Climate change is already being blamed for a longer fire season and some even predict the possibility of a year-round fire season. ``We may need to go to a more permanent work force to manage fires,'''''''' said Timothy Ingalsbee, executive director of the nonprofit Firefighters United for Safety, Ethics and Ecology. Approximately 1,000 scientists and forestry officials who gathered in San Diego for an international wildfire meeting that began on Monday and lasts through the week urged policymakers to consider the effects of global warming when managing wildfires. Future fires, they warned, could drastically alter the land and convert vegetation from one type to another. That, in turn, could put native animals and plants at risk of extinction. Increased wildfires could also adversely affect the planet. Wildfires emit tons of carbon dioxide into the atmosphere, contributing to planet-warming greenhouse gases. ``We are facing a new reality,'''' said Robin Wills, the president of the Oakland-based Association of Fire Ecology, a professional group. Battling wildfires has been complicated by thick forest undergrowth and the increasing encroachment of people near forest land. ``You add on climate change and it's going to make things that much worse,'''' said Thomas Swetnam, who heads the Laboratory of Tree-Ring Research at the University of Arizona.
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