Methane emissions and isotopes of northern peatlands in a global vegetation model ...
Methane is, after water vapor and carbon dioxide, the third most potent greenhouse gas in the atmosphere at present. Its concentration has strongly increased in the 20th century and reached a concentration exceeding any value ever measured over the last 800’000 years. For the effort to mitigate clim...
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| Format: | Text |
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:unas
2013
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| Online Access: | https://dx.doi.org/10.48350/192554 https://boris.unibe.ch/192554/ |
| Summary: | Methane is, after water vapor and carbon dioxide, the third most potent greenhouse gas in the atmosphere at present. Its concentration has strongly increased in the 20th century and reached a concentration exceeding any value ever measured over the last 800’000 years. For the effort to mitigate climate change, it is important to understand the dynamics leading to the atmospheric methane concentration. The atmospheric methane level is a balance between sources and sinks. While the present global total source and sink are relatively well known, the partition between the different contributors is not well understood. To be able to predict future CH4 atmospheric levels it is important to understand the size of the different CH4 sources and sinks and their reaction to climate change. As current observations are limited or only cover a small time window of climate and environmental change, past ice core observations in CH4 and δ13CH4 are of great value to validate models. Global wetlands are the largest natural ... |
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