******************************************************************************* *** Atmospheric CO2 concentrations Waldhof, Germany (ppmv) *** *** *** *** Source: W. Fricke *** *** M. Wallasch *** *** Umweltbundesamt *** *** Frankfurter Str. 135 *** *** 63067 Offenbach/Main, Germany *** *** *** *** September 1994 *** ******************************************************************************* Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. Ann. 1972 350.37 352.37 346.17 338.61 340.94 343.91 348.01 340.06 349.99 350.52 347.75 353.13 346.82 1973 355.41 343.65 347.05 342.99 344.45 342.78 343.86 344.36 343.95 349.31 341.82 348.66 345.69 1974 348.61 346.99 345.92 340.09 341.50 342.50 340.32 -99.99 341.04 340.66 348.21 339.03 -99.99 1975 339.89 346.16 341.92 344.27 340.71 337.19 340.16 343.94 339.67 347.36 352.65 346.55 343.37 1976 341.73 357.18 348.31 342.99 342.19 344.18 339.84 338.74 344.73 354.94 348.66 349.59 346.09 1977 353.44 350.94 346.03 341.25 342.74 343.74 342.19 347.08 344.84 361.17 343.23 353.04 347.47 1978 354.10 358.22 346.53 348.55 349.57 350.64 342.97 345.24 338.46 354.78 357.63 353.84 350.04 1979 358.95 357.69 349.16 350.11 351.59 346.24 343.47 348.18 349.50 350.95 352.19 350.31 350.70 1980 371.61 359.52 359.96 352.48 351.29 353.75 348.24 349.01 356.84 348.12 351.82 -99.99 -99.99 1981 357.33 359.13 352.58 353.11 353.49 348.93 348.67 345.08 358.68 351.05 346.90 360.95 352.99 1982 369.67 359.07 358.61 -99.99 -99.99 345.90 346.88 348.09 350.36 359.31 354.51 356.15 -99.99 1983 356.81 363.36 356.60 355.84 355.51 356.43 352.13 356.01 348.62 353.21 368.95 368.63 357.68 1984 358.76 365.28 359.67 364.67 -99.99 351.85 352.69 361.49 352.27 356.61 368.92 365.35 -99.99 1985 370.19 365.06 366.93 357.69 358.90 -99.99 -99.99 354.91 351.49 361.17 364.59 361.85 -99.99 1986 359.93 363.69 366.05 361.37 360.33 355.96 358.69 354.24 355.79 362.35 364.95 362.44 360.48 1987 368.52 372.51 362.26 366.74 358.72 360.53 362.41 -99.99 362.06 362.69 369.45 366.52 -99.99 1988 372.18 366.03 369.65 374.24 369.97 371.88 363.05 364.15 358.60 368.50 366.25 363.33 367.32 1989 370.48 368.50 366.22 364.06 363.97 362.69 -99.99 365.81 369.70 366.98 377.02 376.69 -99.99 1990 370.29 366.17 366.71 367.61 367.25 365.47 361.06 366.25 361.70 372.19 373.75 371.84 367.52 1991 368.67 376.61 383.30 371.82 367.85 365.40 362.03 368.77 367.46 383.68 382.70 373.07 372.61 1992 372.72 372.93 370.71 372.61 365.95 362.59 368.23 365.42 366.21 368.35 368.58 374.52 369.07 1993 368.12 379.20 373.58 372.96 373.53 368.65 366.28 368.81 368.01 372.49 382.11 371.34 372.09