Methane, Potent Greenhouse Gas, Flowing Into The Atmosphere From Tundra Much Fas

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The figures are very surprising, and our scientists were                    pleased that the extended measuring period,You are not allowed to view links. Register or Login, which was enabled                    by the International Polar Year in 2007, has offered new input                    for our general understanding of the climate system and,You are not allowed to view links. Register or Login, in                    particular, the drastic climate changes in the Arctic regions.
                        
            
            
            
Methane, Potent Greenhouse Gas, Flowing Into The Atmosphere From Tundra Much Faster Than Expected
Charlotte Sigsgaard spent a couple of cold months last                    autumn in the field at Zackenberg, daily monitoring, operating                    and using the equipment for collecting samples from the                    tundra. Her work may now have given science new and previously                    unknown pieces for the big climate puzzle.
“Monitoring in -20°C can be somewhat problematic, but in                    this case it was fantastic and quite surprising to monitor how                    methane emissions from the tundra suddenly increased                    drastically in connection with the onset of freezing at                    Zackenberg,You are not allowed to view links. Register or Login,” says Charlotte Sigsgaard and adds that the new                    figures emphasise the importance of intensifying monitoring                    activities in the high arctic regions.
“Actually, methane emissions in September and October 2007                    matched the total methane emissions during the three warm                    summer months,You are not allowed to view links. Register or Login,” says Charlotte Sigsgaard, research assistant                    at the Department of Geography & Geology, University of                    Copenhagen.
Naturally, this raises new questions concerning                    our understanding of the Earth’s climate system. Scientists at                    the University of Copenhagen in collaboration with scientists                    from Lund University in Sweden and the National Environmental                    Research Institute (DMU),You are not allowed to view links. Register or Login, Aarhus University, recently                    presented new and surprising figures in the scientific                    journal, Nature.
Methane is a highly efficient greenhouse gas, and the                    majority of methane in the atmosphere stems from emissions                    from tundra areas around the world, a significant part of                    which come from the polar areas. So far, scientists have                    believed that the tundra emits most of methane gas into the                    atmosphere during the warm months. However, new results show                    that nature has a trick up its sleeve. Scientists have learned                    that the onset of freezing during the long autumn months also                    forces enormous amounts of greenhouses gases out of the                    tundra. The readings were made at the Zackenberg research                    station in northeast Greenland.