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Ofcourse this was over looked in 2007.
To evaluate the effect of such changes on the volume of the seasonally thawing
organic material, we overlaid the permafrost projections on the digitized geographically
referenced contours of 59 846 wetlands in the Russian Arctic. Results for the mid-21st century
climate indicated up to 50% increase in the volume of organic substrate in the northernmost
locations along the Arctic coast and in East Siberia, where wetlands are sparse, and a relatively
small increase by 10%15% in West Siberia, where wetlands occupy 50%80% of the land. We
developed a soil carbon model and used it to estimate the changes in the methane fluxes due to
higher soil temperature and increased substrate availability. According to our results, by
mid-21st century the annual net flux of methane from Russian permafrost regions may increase
by 68 Mt, depending on climatic scenario. If other sinks and sources of methane remain
unchanged, this may increase the overall content of methane in the atmosphere by
approximately 100 Mt, or 0.04 ppm, and lead to 0.012 ◦C global temperature rise.
http://permafrost.su/sites/default/files/erl2007.pdf
To evaluate the effect of such changes on the volume of the seasonally thawing
organic material, we overlaid the permafrost projections on the digitized geographically
referenced contours of 59 846 wetlands in the Russian Arctic. Results for the mid-21st century
climate indicated up to 50% increase in the volume of organic substrate in the northernmost
locations along the Arctic coast and in East Siberia, where wetlands are sparse, and a relatively
small increase by 10%15% in West Siberia, where wetlands occupy 50%80% of the land. We
developed a soil carbon model and used it to estimate the changes in the methane fluxes due to
higher soil temperature and increased substrate availability. According to our results, by
mid-21st century the annual net flux of methane from Russian permafrost regions may increase
by 68 Mt, depending on climatic scenario. If other sinks and sources of methane remain
unchanged, this may increase the overall content of methane in the atmosphere by
approximately 100 Mt, or 0.04 ppm, and lead to 0.012 ◦C global temperature rise.
http://permafrost.su/sites/default/files/erl2007.pdf
