Greenhouse gasses (MR18-05C)

The Arctic region is considered to be vulnerable to the global warming, which would potentially enhance emissions of the greenhouse gases including CO2 and CH4 from the carbon pools in the Arctic regions into the atmosphere. The objective of this study is to detect the increases in the atmospheric greenhouse gas levels associated with the ongoing global warming in the Arctic region in the early stage. The continuous observations of the atmospheric CO2 and CH4 mixing ratios during this MR18-05C cruise would allow us to detect the enhanced mixing ratios associated with the regional emissions and to estimate the distribution of the regional emission sources. The atmospheric CO mixing ratios, which were also observed at the same time, can be used as an indicator of the anthropogenic emissions associated with the combustion processes.