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Because of its abundance, carbon dioxide is the main cause of global warming, but it is by no means the most dangerous in terms of ability to retain heat gas: Methane gas is about 30 times more efficient at capturing heat. New research indicates that for every degree that the temperature of the Earth increases, the amount of methane that enters the atmosphere due to emissions from microorganisms that live in lake sediments and freshwater wetlands, the main sources of gas, is will increase significantly. With increasing temperature, the relative increase in methane emissions exceed the emissions of carbon dioxide from these sources. This has been established in the investigation conducted by the team of Cristian Gudasz, Princeton University in New Jersey, United States. Methane gas is the third most common greenhouse after carbon dioxide and water vapor. In freshwater food heat lamp systems, methane is produced as the microorganisms involved food heat lamp digest organic matter, a process known as methanogenesis. To provide scientists working with climate food heat lamp models food heat lamp a simple and accurate way to quantify methanogenesis, Gudasz and colleagues analyzed about 1,600 measurements of temperature and methane emissions from 127 freshwater ecosystems worldwide. The researchers analyzed about 1,600 measurements of temperature and methane emissions from 127 freshwater food heat lamp ecosystems worldwide (above), including lakes, swamps, marshes and rice fields. The size of each point is correlated food heat lamp with the average rate of methane emissions in milligrams per square meter per day, during the course food heat lamp of the study. Smaller dots indicate less than one milligram per square meter, while the larger dot represents more than three milligrams. (Image: Courtesy of Cristian Gudasz) The researchers food heat lamp found a common pattern linking methane emissions and temperatures: Methane generation in freshwater ecosystems is stimulated by high temperatures. Generally, and simplifying the pattern, methane emissions at 0 degrees Celsius become 57 times larger when the temperature reaches 30 degrees Celsius, according to the researchers determined. Additional Information
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