******************************************************************* *** Atmospheric CO2 concentrations from Cape St. James (ppmv) *** *** *** *** September 1994 *** *** *** *** Source:Neil B.A. Trivett *** *** Vicky C. Hudec *** *** Atmospheric Environment Service *** *** Downsview, Ontario M3H 5T4 Canada *** *** *** *** C.S. Wong *** *** Marine Carbon Research Centre *** *** Institute of Ocean Sciences *** *** Sidney, British Columbia V8L 4B2 Canada *** ******************************************************************* Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Annual 1979 -99.99 -99.99 -99.99 -99.99 341.75 -99.99 336.12 327.81 330.63 334.75 -99.99 340.18 -99.99 1980 -99.99 340.00 342.55 -99.99 343.14 341.66 334.04 328.51 331.85 337.79 341.18 -99.99 -99.99 1981 342.75 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 334.00 338.34 341.59 343.23 -99.99 1982 343.46 345.00 -99.99 345.70 347.96 -99.99 -99.99 337.33 334.29 339.13 342.61 342.68 -99.99 1983 344.62 346.86 345.76 -99.99 -99.99 -99.99 -99.99 334.42 336.31 341.16 345.24 -99.99 -99.99 1984 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 346.46 -99.99 1985 -99.99 -99.99 350.41 351.60 351.49 348.72 -99.99 -99.99 340.08 344.90 -99.99 -99.99 -99.99 1986 349.26 349.81 350.83 352.30 352.32 346.95 -99.99 -99.99 341.00 345.71 -99.99 -99.99 -99.99 1987 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 341.77 344.47 346.61 348.54 -99.99 -99.99 1988 354.03 353.64 354.38 356.58 355.75 353.01 349.73 341.47 -99.99 350.97 353.37 354.18 -99.99 1989 356.76 356.56 357.29 357.84 -99.99 355.88 348.46 -99.99 348.00 351.86 353.05 355.99 -99.99 1990 360.12 359.05 358.64 360.22 358.82 355.36 -99.99 346.99 347.99 352.77 358.15 359.12 -99.99 1991 359.15 -99.99 361.53 361.48 361.97 357.94 355.52 347.33 348.86 351.40 357.69 358.50 -99.99 1992 359.57 360.88 360.80 360.74 -99.99 360.43 354.64 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 Atmospheric CO2 concentrations are expressed in parts per million by volume (ppmv) and reported in the Scripps Institution of Oceanography X85 manometric mole fraction scale. Monthly values represent in arithmetic means of the paired flask values for a given month as calculated by CDIAC. Annual means are the arithmetic means of the monthly values and are calculated by CDIAC. Annual means are provided only for years with complete monthly records.