Atmospheric CO2, CH4 and CO mixing ratios observed during MR16-06 cruise

Atmospheric CO2, CH4 and CO mixing ratios observed during a R/V Mirai Arctic Ocean cruise (MR16-06) in August-September 2016. The air sample, drawn from an air intake placed at the front of the starboard compass deck, was passed through a thermoelectric dehumidifier and a Nafion tube dryer to reduce the water vapor, and then introduced in the analyzer. Three standard gases stored in 3 cylinders were sequentially introduced into the analyzer every 25 hours for the calibration. These CO2, CH4, and CO mixing ratios were determined against NIES's original standard scales.2016年8月至9月期间，“未来号”（R/V Mirai）北极科考航次（MR16-06）所观测得到的大气二氧化碳（CO₂）、甲烷（CH₄）与一氧化碳（CO）混合比数据。空气样品采集自右舷罗经甲板前端的进气口，经热电除湿器与Nafion管干燥器去除水汽后，被送入分析仪进行检测。每25小时，将储存在3个钢瓶中的三种标准气体依次通入分析仪以完成校准流程。本次测定的CO₂、CH₄与CO混合比均基于日本国立环境研究所（NIES）的原始标准尺度进行标定。