It seems that researchers have got to know about the main culprit behind the increasing global warming. A group of researchers from Washington State University, Vancouver, has found during their research that changing water levels in dams and water reservoirs is the main source of greenhouse gases.

These gases then cause the global warming, said study researcher Bridget Deemer from Washington State University. He further explained the way by which green house gases are formed.

He was of the view that these dams produce a large amount of methane and the latter is said to be stronger than carbon dioxide in order to trap moisture and heat being produced by the Earth’s atmosphere. "Reservoirs have typically been looked at as a green energy source. But their role in greenhouse gas emissions has been overlooked”, further affirmed Deemer.

In order to reach at the above given conclusion, the study researchers said that they assessed the dissolved gases, which were trapped from Lacamas lake, which is in Clark County. It was found that methane quantity jumped by
20% at the time when water level increase and decrease. It is expected that the study would help the authorities concerned on how to manage reservoirs.