This is Dataplot data file MLCO2MON.DAT MAUNA LOA MONTHLY MEAN CO2 DATA (1973 TO 1987) JIM ELKINS (FEBRUARY 1988) NOTE--USE THIS FILE FOR HAWAII CO2 WORKSHOP ANALYSIS NUMBER OF OBSERVATIONS = 161 NUMBER OF (NUMBERIC) VARIABLES = 3 ORDER OF VARIABLES ON A LINE IMAGE -- 1. Response variable = CO2 concentration 2. Factor 1 = year + part of year 3. Factor 2 = year 4. Factor 3 = month This file contains selected monthly mean CO2 concentrations at the Mauna Loa Observatory as measured by the continuous infrared analyser of the Geophysical Monitoring for Climatic Change division of NOAA's Air Resources Laboratory. The selection has been for what we believe approximates 'background conditions'. See Thoning et al., Atmospheric Carbon Dioxide at Mauna Loa Observatory: II Analysis of the NOAA/GMCC data, 1974-1985, J.Geophys.Res. (submitted). Each line contains the site code, year, month, CO2 concentration (mixing ratio in dry air, expressed in the WMO X85 mole fraction scale, maintained by the Scripps Institution of Oceanography). CO2 Year&Month Year Month -------------------------------------------------- 333.13 1974.38 1974 5 332.09 1974.46 1974 6 331.10 1974.54 1974 7 329.14 1974.63 1974 8 327.36 1974.71 1974 9 327.29 1974.79 1974 10 328.23 1974.88 1974 11 329.55 1974.96 1974 12 330.62 1975.04 1975 1 331.40 1975.13 1975 2 331.87 1975.21 1975 3 333.18 1975.29 1975 4 333.92 1975.38 1975 5 333.43 1975.46 1975 6 331.85 1975.54 1975 7 330.01 1975.63 1975 8 328.51 1975.71 1975 9 328.41 1975.79 1975 10 329.25 1975.88 1975 11 330.97 1975.96 1975 12 331.60 1976.04 1976 1 332.60 1976.13 1976 2 333.57 1976.21 1976 3 334.72 1976.29 1976 4 334.68 1976.38 1976 5 334.17 1976.46 1976 6 332.96 1976.54 1976 7 330.80 1976.63 1976 8 328.98 1976.71 1976 9 328.57 1976.79 1976 10 330.20 1976.88 1976 11 331.58 1976.96 1976 12 332.67 1977.04 1977 1 333.17 1977.13 1977 2 334.86 1977.21 1977 3 336.07 1977.29 1977 4 336.82 1977.38 1977 5 336.12 1977.46 1977 6 334.81 1977.54 1977 7 332.56 1977.63 1977 8 331.30 1977.71 1977 9 331.22 1977.79 1977 10 332.37 1977.88 1977 11 333.49 1977.96 1977 12 334.71 1978.04 1978 1 335.23 1978.13 1978 2 336.54 1978.21 1978 3 337.79 1978.29 1978 4 337.95 1978.38 1978 5 338.00 1978.46 1978 6 336.37 1978.54 1978 7 334.47 1978.63 1978 8 332.46 1978.71 1978 9 332.29 1978.79 1978 10 333.76 1978.88 1978 11 334.80 1978.96 1978 12 336.00 1979.04 1979 1 336.63 1979.13 1979 2 337.93 1979.21 1979 3 338.95 1979.29 1979 4 339.05 1979.38 1979 5 339.27 1979.46 1979 6 337.64 1979.54 1979 7 335.68 1979.63 1979 8 333.77 1979.71 1979 9 334.09 1979.79 1979 10 335.29 1979.88 1979 11 336.76 1979.96 1979 12 337.77 1980.04 1980 1 338.26 1980.13 1980 2 340.10 1980.21 1980 3 340.88 1980.29 1980 4 341.47 1980.38 1980 5 341.31 1980.46 1980 6 339.41 1980.54 1980 7 337.74 1980.63 1980 8 336.07 1980.71 1980 9 336.07 1980.79 1980 10 337.22 1980.88 1980 11 338.38 1980.96 1980 12 339.32 1981.04 1981 1 340.41 1981.13 1981 2 341.69 1981.21 1981 3 342.51 1981.29 1981 4 343.02 1981.38 1981 5 342.54 1981.46 1981 6 340.88 1981.54 1981 7 338.75 1981.63 1981 8 337.05 1981.71 1981 9 337.13 1981.79 1981 10 338.45 1981.88 1981 11 339.85 1981.96 1981 12 340.90 1982.04 1982 1 341.70 1982.13 1982 2 342.70 1982.21 1982 3 343.65 1982.29 1982 4 344.28 1982.38 1982 5 343.42 1982.46 1982 6 342.02 1982.54 1982 7 339.97 1982.63 1982 8 337.84 1982.71 1982 9 338.00 1982.79 1982 10 339.20 1982.88 1982 11 340.63 1982.96 1982 12 341.41 1983.04 1983 1 342.68 1983.13 1983 2 343.04 1983.21 1983 3 345.27 1983.29 1983 4 345.92 1983.38 1983 5 345.40 1983.46 1983 6 344.16 1983.54 1983 7 342.11 1983.63 1983 8 340.11 1983.71 1983 9 340.15 1983.79 1983 10 341.38 1983.88 1983 11 343.02 1983.96 1983 12 343.87 1984.04 1984 1 344.59 1984.13 1984 2 345.11 1984.21 1984 3 347.07 1984.29 1984 4 347.38 1984.38 1984 5 346.78 1984.46 1984 6 344.96 1984.54 1984 7 342.71 1984.63 1984 8 340.86 1984.71 1984 9 341.13 1984.79 1984 10 342.84 1984.88 1984 11 344.32 1984.96 1984 12 344.88 1985.04 1985 1 345.62 1985.13 1985 2 347.23 1985.21 1985 3 347.62 1985.29 1985 4 348.53 1985.38 1985 5 347.87 1985.46 1985 6 346.00 1985.54 1985 7 343.86 1985.63 1985 8 342.55 1985.71 1985 9 342.57 1985.79 1985 10 344.11 1985.88 1985 11 345.49 1985.96 1985 12 346.04 1986.04 1986 1 346.70 1986.13 1986 2 347.38 1986.21 1986 3 349.38 1986.29 1986 4 349.93 1986.38 1986 5 349.26 1986.46 1986 6 347.44 1986.54 1986 7 345.55 1986.63 1986 8 344.21 1986.71 1986 9 343.67 1986.79 1986 10 345.09 1986.88 1986 11 346.27 1986.96 1986 12 347.33 1987.04 1987 1 347.82 1987.13 1987 2 349.29 1987.21 1987 3 350.91 1987.29 1987 4 351.71 1987.38 1987 5 350.94 1987.46 1987 6 349.10 1987.54 1987 7 346.77 1987.63 1987 8 345.73 1987.71 1987 9