Air-sea ice CO2 flux using the eddy covariance method and the chamber method, and brine TA, DIC, and pCO2 data on the landfast ice in Cambridgebay, Canada in May 2023

On the landfast ice in Cambridgebay during springtime in 2023, air-sea ice CO2 flux measurement were examined using the eddy covariance method (EC) and the chamber method, and brine TA, DIC, and pCO2 data were also collected. The EC data set includes CO2 flux (FC), random error (Error_rnd), latent heat flux with and without the drying system (LE_dry and LE, respectively), sensible heat flux (H), friction velocity (Ustar), Obukhov length (L), wind direction (WD), wind speed (WS), mean CO2 mixing ratio (CO2), mean H2O mixing ratio with and without drying system (H2O_dry and H2O), standard deviation of H2O mixing ratio with and without drying system (H2O_dry_sigma and H2O_sigma), stationarity (Stationarity), surface temperature (TS), air temperature (TA), Atmospheric pressure (PA), incoming and outgoing shortwave and logwave radiation (SW_IN, SW_out, LW_IN, and LW_OUT), heat flux between the snow and ice, partial pressure of CO2 in brine (pCO2), salinity of brine (Salinity_brine), brine temperature (T_brine), salinity of ice (Salinity_ice), temperature of sea ice (T_ice), brine volume fraction (BVF), and gas transfervelocity (k660). Chamber data set includes CO2 flux (FC) using the chamber method. Brine data set includes 5-point brine data of brine temperature (Temp), salinity (Salinity), desolved inorganic carbon (DIC), total alkalinity (TA), and partial pressure of CO2, which were collected from five 0-20-cm-depth holles. In the EC data set, brine parameters were interpolated and extrapolated based on these five point data.