Variable,Description,Unit Date,Date of measurement,mm/dd/yyyy Latitude,Latitude,decimal deg Longitude,Longitude,decimal deg Collar_ID,Flux measurement location ID,-- Surface_Type,Vegetated or Barren soil surface,V - vegetated; b - bare Dry_weight,Dry weight of soil sample,g Soil_volume,Volume of soil sample,cm^3 Bulk_density,Bulk density of soil sample,g cm^-3 Mean_SWC,Average soil water content per flux measurement location,% SE_SWC,Standard error of soil water content per flux measurement location,% Mean_FN2O,Average N2O flux per measurement location,µg m^-2 hr^-1 SE_FN2O,Standard error of N2O flux per measurement location,µg m^-2 hr^-1 Mean_FCO2,Average CO2 flux per measurement location,µg m^-2 hr^-1 SE_FCO2,Standard error of CO2 flux per measurement location,µg m^-2 hr^-1 Mean_Tsoil,Mean soil temperature per measurement location,°C WFPS,Water filled pore space,% Collar_volume,Volume of flux collar,m^3 Chamber_volume,Volume of flux chamber,m^3 Total_volume,Volume of flux collar and flux chamber,m^3 Surface_area,Surface area of soil in flux chamber,m^2 CO2_slope,Slope of the change in CO2 concentration during flux measurement,ppm s^-1 CO2_slope_r2,R-squared of the change in CO2 concentration during flux measurement,-- N2O_slope,Slope of the change in N2O concentration during flux measurement,ppm s^-1 N2O_slope_r2,R-squared of the change in N2O concentration during flux measurement,-- Soil_temp,Soil Temperature,°C C_CO2_Flux,CO2 Flux,µg m^-2 hr^-1 N2O_N_Flux,N2O Flux,µg m^-2 hr^-1 VWC,Soil water content ,% Thaw_depth,Thaw depth,cm ID,Soil sample ID,-- Depth,Depth of soil sample,cm d15N,^15N/^14N ratio,-- mgN_mg,Soil nitrogen content,mg N mg^-1 d13C,^13C/^12C ratio,-- mgC_mg,Soil carbon content,mg C mg^-1 CN_ratio,Carbon to nitrogen ratio,-- mgN_cm3,Soil nitrogen content,mg N cm^-3 mgC_cm3,Soil carbon content,mg C cm^-3