******************************************************************************* *** Atmospheric CO2 concentrations at Brotjacklriegel, 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 340.04 339.83 336.54 334.28 329.83 324.61 325.80 322.31 324.28 332.15 335.43 334.46 331.63 1973 339.82 340.86 340.71 336.45 332.34 326.92 326.52 324.34 329.21 334.23 336.88 338.97 333.94 1974 340.08 342.78 340.75 335.10 333.02 329.94 328.00 330.63 327.84 335.25 337.94 337.29 334.89 1975 335.64 337.58 339.98 336.97 329.09 327.21 326.32 328.68 331.65 341.42 351.37 346.06 336.00 1976 339.55 343.53 343.77 340.52 334.19 329.45 331.41 324.24 328.65 339.22 342.93 340.65 336.51 1977 343.74 340.73 340.95 339.36 333.72 331.41 323.94 325.44 332.07 339.34 341.35 342.92 336.25 1978 345.48 348.89 346.42 344.39 339.94 335.63 324.92 326.38 330.09 338.12 339.12 341.64 338.42 1979 347.95 346.22 343.22 343.44 337.44 333.01 330.55 328.75 329.75 337.22 344.43 342.99 338.75 1980 347.58 347.70 349.21 346.55 339.47 336.10 331.15 329.95 332.17 338.50 346.96 347.72 341.09 1981 347.23 349.04 345.79 344.68 339.78 334.31 332.22 332.45 337.57 341.54 347.02 349.18 341.73 1982 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 1983 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 1984 357.09 361.37 361.92 360.47 347.95 341.72 340.60 339.69 343.61 347.44 356.06 361.81 351.64 1985 363.08 358.42 378.08 355.11 -99.99 343.50 338.40 338.15 340.42 349.76 364.76 364.18 -99.99 1986 360.02 364.88 365.89 358.79 348.01 340.82 337.57 -99.99 -99.99 -99.99 -99.99 357.04 -99.99 1987 361.14 366.87 361.29 360.47 349.14 347.10 -99.99 -99.99 348.31 355.52 353.97 361.26 -99.99 1988 356.55 353.93 352.57 351.61 352.02 351.60 347.61 345.41 348.53 356.38 361.85 359.33 353.12 1989 -99.99 -99.99 -99.99 -99.99 -99.99 351.28 353.15 352.87 356.42 358.86 365.50 363.31 -99.99 1990 357.60 358.56 360.88 359.77 350.88 350.15 347.77 -99.99 -99.99 -99.99 364.09 360.42 -99.99 1991 359.66 369.81 368.14 362.83 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99 -99.99