# file: NWR_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: NWR (Niwot Ridge, Colorado -- 40.05 N, 105.58 W, 3523 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 # F11oldGCNWRyr F11oldGCNWRmon F11oldGCNWRm F11oldGCNWRsd F11oldGCNWRn 1977 1 153.3 2.3 6 1977 2 161.6 12.9 4 1977 3 144.9 3.3 4 1977 4 nan nan 0 1977 5 154.8 12.9 8 1977 6 nan nan 0 1977 7 144.7 4.1 2 1977 8 152.0 8.5 3 1977 9 nan nan 0 1977 10 152.7 2.2 5 1977 11 149.8 2.4 5 1977 12 156.2 3.8 4 1978 1 150.9 1.5 5 1978 2 155.1 2.4 4 1978 3 153.0 4.1 4 1978 4 nan nan 0 1978 5 159.8 6.2 6 1978 6 157.1 7.0 8 1978 7 157.9 3.9 8 1978 8 160.5 4.8 7 1978 9 165.5 4.0 6 1978 10 161.4 2.5 7 1978 11 163.0 1.6 8 1978 12 159.8 1.2 2 1979 1 159.6 2.2 8 1979 2 159.3 4.1 8 1979 3 166.2 7.7 5 1979 4 162.3 3.0 8 1979 5 161.5 1.7 10 1979 6 164.1 4.4 8 1979 7 163.5 3.8 6 1979 8 165.4 4.9 7 1979 9 164.0 3.0 3 1979 10 169.4 3.3 5 1979 11 170.1 1.9 4 1979 12 169.5 1.6 6 1980 1 169.2 1.4 4 1980 2 169.6 1.6 4 1980 3 178.2 0.6 2 1980 4 172.9 2.1 6 1980 5 176.6 3.6 5 1980 6 173.4 2.2 6 1980 7 175.2 4.7 6 1980 8 nan nan 0 1980 9 177.5 9.2 8 1980 10 175.8 3.0 9 1980 11 177.7 1.9 5 1980 12 174.5 3.3 10 1981 1 177.2 1.3 6 1981 2 177.7 1.9 8 1981 3 179.7 2.6 10 1981 4 177.3 1.8 8 1981 5 181.3 1.2 5 1981 6 181.4 3.5 8 1981 7 180.8 1.4 10 1981 8 182.2 1.9 8 1981 9 183.4 1.1 6 1981 10 185.5 1.6 8 1981 11 183.3 1.3 8 1981 12 184.3 2.2 10 1982 1 185.3 2.4 8 1982 2 184.2 4.3 8 1982 3 187.9 5.4 10 1982 4 189.0 2.3 8 1982 5 188.4 4.1 8 1982 6 188.9 3.7 10 1982 7 191.5 1.4 8 1982 8 188.9 1.4 10 1982 9 191.0 2.6 7 1982 10 190.8 2.1 8 1982 11 194.4 3.2 10 1982 12 194.4 4.0 8 1983 1 193.2 1.9 10 1983 2 195.6 4.2 8 1983 3 197.3 5.5 6 1983 4 199.2 1.3 10 1983 5 199.8 3.7 8 1983 6 198.3 2.8 10 1983 7 198.4 2.1 4 1983 8 198.7 4.2 8 1983 9 201.0 4.0 8 1983 10 202.5 3.3 8 1983 11 201.8 1.7 10 1983 12 204.8 1.7 8 1984 1 203.5 3.3 8 1984 2 201.7 2.5 10 1984 3 206.6 3.1 6 1984 4 204.6 2.8 8 1984 5 206.0 4.1 9 1984 6 205.8 2.2 8 1984 7 204.6 3.8 10 1984 8 205.0 2.4 8 1984 9 208.1 0.9 6 1984 10 212.1 3.8 8 1984 11 210.2 4.1 6 1984 12 213.4 2.4 10 1985 1 212.9 4.8 5 1985 2 208.4 6.0 6 1985 3 215.3 2.3 8 1985 4 215.5 3.0 10 1985 5 217.4 2.4 6 1985 6 214.8 2.3 4 1985 7 214.9 2.1 10 1985 8 218.1 2.9 6 1985 9 223.5 6.4 7 1985 10 223.7 3.5 10 1985 11 224.5 4.1 6 1985 12 223.1 2.8 8 1986 1 222.7 0.7 5 1986 2 220.9 7.2 4 1986 3 223.2 6.6 5 1986 4 225.8 2.1 4 1986 5 227.3 4.8 5 1986 6 229.1 3.1 8 1986 7 225.9 2.5 10 1986 8 230.2 0.9 3 1986 9 228.0 3.1 5 1986 10 232.5 2.5 7 1986 11 236.0 5.4 7 1986 12 232.8 2.0 7 1987 1 233.0 3.8 8 1987 2 235.1 2.8 7 1987 3 236.0 6.5 6 1987 4 236.7 5.2 8 1987 5 239.9 4.6 8 1987 6 239.9 2.7 4 1987 7 238.9 3.4 7 1987 8 241.5 2.7 7 1987 9 244.5 5.8 6 1987 10 249.6 2.7 10 1987 11 246.9 2.8 7 1987 12 247.9 2.1 10 1988 1 248.5 1.1 6 1988 2 247.7 4.0 8 1988 3 251.3 5.8 10 1988 4 257.7 13.8 8 1988 5 259.5 5.3 6 1988 6 252.2 5.3 10 1988 7 nan nan 0 1988 8 256.0 4.9 8 1988 9 252.6 2.4 8 1988 10 251.8 1.9 6 1988 11 259.4 2.2 8 1988 12 255.9 5.4 6 1989 1 255.8 3.8 10 1989 2 258.5 1.5 8 1989 3 255.6 4.6 8 1989 4 257.5 3.3 8 1989 5 257.6 3.1 6 1989 6 257.8 2.2 4 1989 7 265.6 4.5 3 1989 8 262.9 5.4 7 1989 9 265.2 4.6 5 1989 10 265.3 7.9 8 1989 11 266.0 2.2 10 1989 12 262.8 2.4 8 1990 1 264.2 2.5 8 1990 2 265.5 4.4 8 1990 3 267.6 3.7 8 1990 4 264.0 2.2 5 1990 5 264.2 2.4 9 1990 6 264.4 2.8 8 1990 7 263.3 4.1 4 1990 8 264.6 2.0 8 1990 9 267.3 5.9 4 1990 10 266.7 1.3 6 1990 11 268.6 1.5 6 1990 12 267.5 2.4 7 1991 1 266.1 2.4 4 1991 2 269.8 3.6 5 1991 3 265.9 2.9 8 1991 4 270.3 2.1 3 1991 5 266.5 2.2 3 1991 6 268.9 3.9 8 1991 7 269.7 1.0 6 1991 8 268.4 2.0 8 1991 9 271.6 5.2 6 1991 10 269.5 2.9 8 1991 11 270.4 1.6 7 1991 12 272.0 1.4 10 1992 1 273.3 4.7 5 1992 2 271.1 1.2 6 1992 3 268.3 7.1 9 1992 4 272.9 1.7 5 1992 5 271.1 2.2 4 1992 6 271.9 1.4 5 1992 7 271.0 1.8 6 1992 8 271.4 1.6 4 1992 9 272.6 2.4 10 1992 10 273.3 1.4 8 1992 11 275.7 1.5 7 1992 12 274.3 3.3 10 1993 1 272.2 1.1 3 1993 2 272.7 1.3 5 1993 3 278.0 4.0 5 1993 4 276.4 2.4 2 1993 5 270.6 0.8 4 1993 6 275.6 9.2 8 1993 7 273.4 3.5 8 1993 8 269.7 4.1 8 1993 9 274.4 4.1 7 1993 10 277.9 1.9 3 1993 11 273.9 2.0 5 1993 12 273.1 1.3 6 1994 1 266.9 0.6 2 1994 2 270.8 1.4 3 1994 3 271.3 2.9 7 1994 4 270.0 0.5 2 1994 5 271.3 2.2 7 1994 6 271.7 2.4 4 1994 7 271.2 4.0 3 1994 8 273.8 2.7 8 1994 9 272.3 4.0 6 1994 10 272.5 3.2 6 1994 11 nan nan 0 1994 12 267.0 1.6 6 1995 1 269.1 2.8 10 1995 2 269.9 1.9 5 1995 3 269.8 2.4 6 1995 4 272.1 1.4 8 1995 5 271.1 3.1 6 1995 6 270.0 2.6 8 1995 7 271.6 2.0 8 1995 8 270.8 2.1 10 1995 9 272.3 2.7 6 1995 10 272.5 2.0 10 1995 11 270.6 2.3 8 1995 12 275.7 1.9 4