Trace gas mixing ratios measured over the Southern Ocean in the austral summer of 2016/2017, during the Antarctic Circumnavigation Expedition.

Data files: ACESPACE_trace_gas_concentration.csv

date_time [UTC]: Date and time of the end of each five-minute time interval in the ISO 8601 format YYYY-MM-DDThh:mm:ss+00:00 [UTC]
latitude [degN]: Average latitude of the ship on which the measurements took place, during the five-minute time interval [decimal degrees North]
longitude [degE]: Average longitude of the ship on which the measurements took place, during the five-minute time interval [decimal degrees East]
03 [ppb]: Concentration of ozone (O3) measured in parts per billion during the five-minute interval [ppb]
CH4 [ppm]: Concentration of methane (CH4) measured in parts per million during the five-minute interval [ppm]
CO [ppb]: Concentration of carbon monoxide (CO) measured in parts per billion during the five-minute interval [ppb]
CO2 [ppm]: Concentration of carbon dioxide (CO2) measured in parts per million during the five-minute interval [ppm]

NaN
NaN values denote missing values because of e.g., ship exhaust contamination or instrument maintenance. For latitude and longitude, NaN values are noted in cases where position data was not available for the given time period.