Atmospheric CO2, CH4 and CO mixing ratios observed during a R/V Mirai Arctic Ocean cruise (MR17-05C) 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.
There is no citation at the present. Please contact the data submitter (Yasunori Tohjima; email@example.com) when the data are used for any publications.
Please mention that this cruise was conducted under the Arctic Challenge for Sustainability (ArCS) Project, which was funded by the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT).
Cavity ring-down spectroscopy analyzer (CRDS)
Atmospheric CO2, CH4, CO and H2O analyzer based on wavelength-scanned cavity ring-down spectroscopy technique. (Picarro Inc., CA, USA, Model G-2401)
Comma-delimited text data. Date (UTC), Latitude (deg. N), Longitude (deg. E), CO2 mixing ratio (ppm), standard deviation, number, CH4 mixing ratio (ppb), standard deviation, number, CO mixing ratio, standard deviation, and number. Each mixing ratio represents 1-hour average.