# file: SMO_F11_MM.dat # # Atmospheric measurements of F11 (Chloroflurocarbon-11) # Measurements are from the NOAA/ESRL/GMD/HATS original flask program # (http://www.esrl.noaa.gov/gmd/hats/flask/flasks.html). # Instrument ID: oldGC # # Location: SMO (Tutuila, Samoa -- 14.25 S, 170.56 W, 42 m Elev.) # See http://www.esrl.noaa.gov/gmd/dv/site/site_table.html#hats_flask for # more information about flask sampling sites. # # # The data reported are from flask samples collected approximately once per # week in matching, concurrent pairs and later analyzed on a gas chromatograph # with electron capture detection (GC-ECD) located in Boulder, Colorado, USA. # This GC was in operation from 1977 to 1995 when it was retired and replaced. # # (PIs) Dr. James W. Elkins, Dr. Bradley D. Hall # # Email: James.W.Elkins@noaa.gov; Bradley.Hall@noaa.gov # Phone: (303) 497-6224 (303) 497-7011 # Fax: (303) 497-6290 # # National Oceanic and Atmospheric Administration (NOAA) # Earth System Research Laboratory (ESRL) # 325 Broadway, R/GMD1 # Boulder, CO 80305-3328 # See (http://www.esrl.noaa.gov/gmd/obop/) for station statistics and personnel. # # Data use policy: # If you use this data in a publication or report, we would appreciate that you contact the principal # investigators (PIs) first and discuss your interests. We are trying to encourage scientific discussion. # The PIs can discuss the quality of the data and any potential problems with its analysis. # # The data should be cited in presentations or publications as the flowing: Chloroflurocarbon-11 data from # the NOAA/ESRL halocarbons original flask program. # # Calibration scale used: NOAA 2016 # # More information about the calibration scale can be found at: # http://www.esrl.noaa.gov/gmd/ccl/ # # Monthly mean data are provided in parts-per-trillion, ppt. # # Missing value: "nan" # # Data Columns: # yr Year # mon Month # m Monthly mean concentration of N2O in ppb # sd Standard deviation of the mean # n Number of samples # F11oldGCSMOyr F11oldGCSMOmon F11oldGCSMOm F11oldGCSMOsd F11oldGCSMOn 1977 1 nan nan 0 1977 2 nan nan 0 1977 3 nan nan 0 1977 4 nan nan 0 1977 5 nan nan 0 1977 6 nan nan 0 1977 7 nan nan 0 1977 8 135.6 2.5 7 1977 9 136.0 2.7 6 1977 10 136.7 1.8 3 1977 11 135.9 3.5 5 1977 12 135.0 2.7 4 1978 1 139.8 4.2 4 1978 2 139.3 2.4 4 1978 3 141.2 5.3 6 1978 4 144.2 3.9 4 1978 5 142.9 2.1 9 1978 6 142.7 1.4 6 1978 7 142.6 1.7 8 1978 8 144.9 2.7 8 1978 9 144.7 2.1 9 1978 10 146.3 2.9 4 1978 11 149.0 1.8 6 1978 12 148.0 2.4 9 1979 1 150.8 2.4 6 1979 2 154.1 2.4 8 1979 3 151.1 3.6 5 1979 4 152.7 2.0 7 1979 5 151.6 1.7 10 1979 6 151.2 1.2 7 1979 7 153.5 1.6 8 1979 8 153.6 3.6 7 1979 9 152.1 4.4 6 1979 10 157.7 1.4 6 1979 11 156.7 2.0 6 1979 12 156.7 1.9 8 1980 1 159.3 1.5 8 1980 2 160.2 1.8 8 1980 3 160.3 2.1 14 1980 4 160.3 2.5 9 1980 5 160.4 2.5 15 1980 6 162.5 1.5 10 1980 7 161.5 0.7 8 1980 8 161.6 1.6 7 1980 9 165.1 1.2 5 1980 10 163.6 3.5 7 1980 11 163.5 1.6 6 1980 12 164.3 2.3 4 1981 1 168.5 5.5 8 1981 2 168.1 1.6 4 1981 3 166.5 2.6 8 1981 4 169.2 2.1 8 1981 5 169.4 2.4 8 1981 6 169.5 1.5 6 1981 7 172.0 3.6 4 1981 8 171.9 1.8 8 1981 9 174.5 3.1 4 1981 10 173.6 3.1 4 1981 11 175.6 1.8 6 1981 12 175.6 2.9 8 1982 1 177.4 1.5 8 1982 2 178.9 4.4 6 1982 3 176.5 3.3 8 1982 4 179.1 1.3 6 1982 5 178.6 2.1 9 1982 6 180.0 3.9 8 1982 7 179.8 1.0 6 1982 8 181.4 1.5 8 1982 9 181.3 1.1 6 1982 10 182.4 2.1 8 1982 11 182.7 2.2 10 1982 12 182.0 1.9 6 1983 1 186.4 2.2 6 1983 2 183.9 2.3 6 1983 3 187.6 2.2 6 1983 4 187.0 2.3 4 1983 5 186.6 1.2 4 1983 6 188.1 0.9 2 1983 7 188.3 1.8 6 1983 8 187.2 1.3 4 1983 9 188.8 4.0 2 1983 10 191.5 1.4 8 1983 11 190.0 2.8 8 1983 12 194.3 2.5 8 1984 1 195.6 2.4 8 1984 2 197.0 2.1 10 1984 3 192.9 3.4 6 1984 4 196.9 3.1 8 1984 5 193.7 4.0 6 1984 6 194.5 1.6 10 1984 7 195.3 0.6 8 1984 8 196.1 2.5 8 1984 9 200.1 3.0 8 1984 10 199.0 3.7 8 1984 11 197.0 3.3 5 1984 12 204.5 3.0 5 1985 1 208.2 4.6 6 1985 2 207.7 7.2 8 1985 3 207.3 2.0 10 1985 4 208.2 1.9 8 1985 5 207.1 1.9 7 1985 6 206.1 1.2 6 1985 7 207.6 2.0 7 1985 8 208.5 1.9 10 1985 9 nan nan 0 1985 10 210.7 0.5 9 1985 11 209.9 2.2 6 1985 12 213.1 2.1 8 1986 1 214.8 4.9 6 1986 2 208.8 2.2 3 1986 3 214.2 2.8 4 1986 4 219.7 8.4 5 1986 5 nan nan 0 1986 6 219.8 1.4 5 1986 7 219.5 2.1 8 1986 8 nan nan 0 1986 9 222.4 3.1 4 1986 10 221.1 3.0 8 1986 11 219.8 3.7 6 1986 12 223.4 1.7 6 1987 1 223.1 2.5 4 1987 2 228.9 1.6 2 1987 3 226.5 4.9 2 1987 4 nan nan 0 1987 5 nan nan 0 1987 6 225.1 2.0 2 1987 7 225.8 3.3 6 1987 8 nan nan 0 1987 9 231.2 2.5 4 1987 10 229.1 0.3 2 1987 11 231.8 3.0 6 1987 12 232.7 1.5 4 1988 1 234.1 2.2 8 1988 2 235.2 1.8 6 1988 3 230.2 5.7 8 1988 4 237.4 1.8 5 1988 5 236.4 3.4 8 1988 6 236.5 3.1 4 1988 7 237.1 0.6 6 1988 8 239.6 1.7 6 1988 9 236.8 1.9 8 1988 10 240.1 0.8 6 1988 11 241.5 0.1 2 1988 12 246.8 2.6 5 1989 1 248.8 3.0 6 1989 2 246.0 0.2 2 1989 3 246.5 4.2 5 1989 4 247.1 0.6 2 1989 5 247.1 1.2 5 1989 6 243.6 4.8 6 1989 7 247.5 2.5 6 1989 8 251.3 3.2 2 1989 9 250.4 1.7 4 1989 10 251.4 3.6 6 1989 11 250.9 1.6 3 1989 12 253.4 3.0 6 1990 1 254.9 1.4 2 1990 2 251.3 1.4 2 1990 3 254.0 0.9 7 1990 4 253.0 3.1 6 1990 5 251.3 1.2 5 1990 6 253.7 1.4 9 1990 7 254.1 2.4 5 1990 8 258.4 4.3 4 1990 9 nan nan 0 1990 10 254.7 1.8 7 1990 11 256.7 2.9 4 1990 12 260.5 2.2 5 1991 1 259.4 4.0 3 1991 2 nan nan 0 1991 3 260.1 1.6 2 1991 4 260.2 1.7 3 1991 5 260.6 0.2 2 1991 6 259.5 1.4 8 1991 7 260.8 1.6 8 1991 8 263.1 1.4 7 1991 9 nan nan 0 1991 10 262.8 1.5 4 1991 11 262.7 1.8 7 1991 12 260.6 3.9 4 1992 1 262.8 1.0 6 1992 2 261.3 2.8 4 1992 3 262.5 2.0 6 1992 4 262.8 2.4 6 1992 5 261.6 0.1 2 1992 6 264.1 1.6 8 1992 7 262.2 3.9 5 1992 8 264.0 2.6 10 1992 9 262.5 1.3 2 1992 10 264.4 1.7 8 1992 11 264.0 1.0 2 1992 12 267.1 0.3 2 1993 1 265.2 0.6 6 1993 2 271.1 5.0 3 1993 3 nan nan 0 1993 4 263.8 5.0 3 1993 5 264.5 2.0 2 1993 6 266.0 3.6 6 1993 7 267.1 0.1 2 1993 8 267.1 7.3 6 1993 9 268.5 2.5 7 1993 10 266.5 2.0 2 1993 11 267.0 3.3 9 1993 12 267.0 0.9 3 1994 1 270.4 1.4 3 1994 2 269.1 2.6 4 1994 3 nan nan 0 1994 4 272.0 10.8 6 1994 5 267.1 0.8 8 1994 6 266.7 3.0 5 1994 7 266.3 1.2 6 1994 8 266.3 0.9 5 1994 9 269.0 2.8 7 1994 10 266.7 1.6 8 1994 11 267.0 2.8 7 1994 12 266.3 2.1 4 1995 1 265.0 1.0 5 1995 2 266.5 0.3 4 1995 3 nan nan 0 1995 4 266.4 1.0 6 1995 5 266.4 0.6 3 1995 6 266.8 2.9 5 1995 7 265.8 1.5 6 1995 8 264.6 1.1 8 1995 9 266.3 2.2 8 1995 10 266.3 1.3 8 1995 11 265.1 2.6 6 1995 12 267.0 1.7 3