Experts have raised concerns by unveiling that extreme wildfires are taking place in the Western United States. The blazes are more violent and taking place at more frequent levels in recent years than they have in the past. New research has blamed global warming for the same.

Researchers from the University of Wyoming has warned that the world has reached at such a level that even a slightest increase in average temperature can lead to dramatic increase in wildlife activity.

The researchers also said that global warming may be bringing alterations and ushering in an era of high-elevation wildfires that have not been seen in over 1,000 years. Owing to climate change, more than 50,000 wildfires have taken place.

As per the researchers, the wildfires have burnt more than 9 million acres in the West and Alaska this year. The researchers said that warming in Alaska is the major reason behind massive wildfires there this year.

The researchers have gone through charcoal samples representing 2,000 years of wildfire. The samples have been taken from lake beds in a subalpine forest in northern Colorado’s Mount Zirkel Wilderness near Steamboat Springs.

“Our study then adds more evidence that the recent increase in large wildfires is related to climate change because the only time we see these types of large wildfires in the last 2,000 years is when we had a similar amount of warming”, said study’s lead researcher John Calder.

“When we look into the past for evidence of these large wildfires we only see them one time when temperatures rose about 1°F,” he said