# file: BRW_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: BRW (Barrow, Alaska -- 71.32 N, 156.61 W, 11 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 # F11oldGCBRWyr F11oldGCBRWmon F11oldGCBRWm F11oldGCBRWsd F11oldGCBRWn 1977 1 158.7 13.3 3 1977 2 149.5 3.5 2 1977 3 145.3 0.5 3 1977 4 nan nan 0 1977 5 155.9 5.4 2 1977 6 144.6 3.2 2 1977 7 nan nan 0 1977 8 148.0 2.1 6 1977 9 149.0 2.4 5 1977 10 156.0 1.6 5 1977 11 156.3 1.7 7 1977 12 159.1 1.1 4 1978 1 157.7 2.8 5 1978 2 158.8 5.5 6 1978 3 157.9 2.4 5 1978 4 160.2 3.2 2 1978 5 158.0 2.3 9 1978 6 158.2 1.6 8 1978 7 158.9 2.8 8 1978 8 159.8 1.9 6 1978 9 164.4 3.8 4 1978 10 164.4 2.9 10 1978 11 168.9 1.8 6 1978 12 172.1 9.0 7 1979 1 164.0 3.7 7 1979 2 166.5 1.8 10 1979 3 173.4 8.9 8 1979 4 168.5 1.7 8 1979 5 167.3 1.7 9 1979 6 166.9 2.2 8 1979 7 167.3 1.9 10 1979 8 166.8 1.8 6 1979 9 170.7 5.3 6 1979 10 173.3 1.7 10 1979 11 174.2 1.4 5 1979 12 nan nan 0 1980 1 176.8 1.6 10 1980 2 175.6 2.0 8 1980 3 177.6 1.9 8 1980 4 176.3 1.1 4 1980 5 175.7 2.2 8 1980 6 176.7 1.7 6 1980 7 176.3 1.8 7 1980 8 179.9 4.8 3 1980 9 nan nan 0 1980 10 177.9 4.2 6 1980 11 185.4 9.8 4 1980 12 182.4 1.9 4 1981 1 181.8 2.7 6 1981 2 185.9 3.6 4 1981 3 182.0 4.1 9 1981 4 184.7 3.0 6 1981 5 183.4 0.8 4 1981 6 184.4 2.6 6 1981 7 184.4 1.4 8 1981 8 192.6 9.1 4 1981 9 184.3 2.1 6 1981 10 188.6 2.2 8 1981 11 191.3 2.6 10 1981 12 192.9 3.5 8 1982 1 191.3 1.8 6 1982 2 193.5 2.4 6 1982 3 194.2 2.3 8 1982 4 192.8 2.9 6 1982 5 191.0 0.7 8 1982 6 190.4 2.0 7 1982 7 191.6 2.5 10 1982 8 192.5 1.2 10 1982 9 194.4 1.4 8 1982 10 195.9 2.2 8 1982 11 197.4 2.5 8 1982 12 201.9 7.9 10 1983 1 200.0 1.8 6 1983 2 199.4 1.8 8 1983 3 199.6 1.7 6 1983 4 201.2 1.5 8 1983 5 nan nan 0 1983 6 202.0 4.1 6 1983 7 203.8 3.9 8 1983 8 200.5 1.5 6 1983 9 204.3 1.2 4 1983 10 204.7 1.4 8 1983 11 207.7 3.5 10 1983 12 206.1 1.5 8 1984 1 209.3 2.8 8 1984 2 209.8 2.6 6 1984 3 209.0 2.2 8 1984 4 206.5 3.0 10 1984 5 209.0 3.4 6 1984 6 208.1 2.4 6 1984 7 209.4 2.0 10 1984 8 209.2 2.0 7 1984 9 210.9 3.3 8 1984 10 213.7 2.2 10 1984 11 215.4 2.8 8 1984 12 218.1 2.9 8 1985 1 217.2 4.5 8 1985 2 224.1 2.9 6 1985 3 219.9 2.2 8 1985 4 222.4 1.5 7 1985 5 220.7 3.2 9 1985 6 218.2 2.5 6 1985 7 218.7 2.9 8 1985 8 222.6 3.0 7 1985 9 222.7 2.0 10 1985 10 227.0 1.7 8 1985 11 229.1 2.4 6 1985 12 229.4 1.6 8 1986 1 230.1 2.3 6 1986 2 229.8 2.0 4 1986 3 231.0 6.1 3 1986 4 nan nan 0 1986 5 231.2 1.8 5 1986 6 230.8 1.2 5 1986 7 230.5 1.6 6 1986 8 234.9 5.0 5 1986 9 231.6 3.9 4 1986 10 239.1 4.5 7 1986 11 237.9 1.6 5 1986 12 241.5 2.7 8 1987 1 240.9 2.8 3 1987 2 241.1 3.2 4 1987 3 241.2 4.9 5 1987 4 243.8 2.8 4 1987 5 246.0 5.4 5 1987 6 243.2 2.2 4 1987 7 250.5 12.5 5 1987 8 245.1 2.2 6 1987 9 248.6 4.0 5 1987 10 251.4 2.3 8 1987 11 254.1 3.6 8 1987 12 254.2 3.2 8 1988 1 252.2 2.4 4 1988 2 254.6 2.8 7 1988 3 254.2 0.9 5 1988 4 256.1 4.5 4 1988 5 255.1 3.3 7 1988 6 254.6 2.5 8 1988 7 254.3 2.1 8 1988 8 255.8 2.2 8 1988 9 260.4 6.3 6 1988 10 259.1 2.3 8 1988 11 264.7 3.0 6 1988 12 262.8 1.8 5 1989 1 266.8 10.9 8 1989 2 262.9 1.6 4 1989 3 264.9 4.5 8 1989 4 264.4 1.7 8 1989 5 262.7 2.4 6 1989 6 261.2 0.6 2 1989 7 263.9 4.6 8 1989 8 260.7 0.5 2 1989 9 263.4 2.3 10 1989 10 268.7 2.5 5 1989 11 273.7 3.5 8 1989 12 272.4 2.7 10 1990 1 272.6 0.8 6 1990 2 274.1 0.8 6 1990 3 271.0 1.3 7 1990 4 269.5 0.8 8 1990 5 267.5 1.7 6 1990 6 268.9 2.1 6 1990 7 nan nan 0 1990 8 267.7 2.8 5 1990 9 267.6 2.0 4 1990 10 269.2 1.1 6 1990 11 270.1 2.0 8 1990 12 269.5 5.9 6 1991 1 272.9 2.9 4 1991 2 274.5 1.9 6 1991 3 275.3 2.8 5 1991 4 271.9 2.1 6 1991 5 269.9 3.4 5 1991 6 270.7 3.6 8 1991 7 nan nan 0 1991 8 271.1 1.1 6 1991 9 271.1 2.2 8 1991 10 273.3 1.7 8 1991 11 273.6 1.4 10 1991 12 276.2 1.9 3 1992 1 274.5 1.6 8 1992 2 275.2 2.9 4 1992 3 nan nan 0 1992 4 276.3 1.7 6 1992 5 272.8 0.6 4 1992 6 274.4 1.7 4 1992 7 272.9 1.9 6 1992 8 271.1 3.0 7 1992 9 272.2 3.7 4 1992 10 275.4 1.3 4 1992 11 277.6 4.3 6 1992 12 277.0 3.6 6 1993 1 nan nan 0 1993 2 275.5 0.7 2 1993 3 274.3 2.7 5 1993 4 273.2 1.9 3 1993 5 274.2 2.5 5 1993 6 268.9 5.7 2 1993 7 272.1 7.6 6 1993 8 272.7 2.3 3 1993 9 273.2 3.0 6 1993 10 276.4 3.4 10 1993 11 274.9 0.7 6 1993 12 275.2 1.5 7 1994 1 275.9 1.7 7 1994 2 275.8 1.7 8 1994 3 273.9 2.3 8 1994 4 273.3 1.7 7 1994 5 273.7 1.0 7 1994 6 272.4 2.8 8 1994 7 272.9 1.3 9 1994 8 273.0 1.1 8 1994 9 273.9 1.1 8 1994 10 271.9 1.9 10 1994 11 272.7 0.7 8 1994 12 272.9 0.8 3 1995 1 278.0 8.5 7 1995 2 272.4 1.0 7 1995 3 277.5 6.0 3 1995 4 273.7 1.9 7 1995 5 271.5 1.2 9 1995 6 271.1 1.3 8 1995 7 270.5 1.5 7 1995 8 271.2 1.7 8 1995 9 270.4 1.4 10 1995 10 271.5 2.2 5 1995 11 272.9 2.0 3 1995 12 nan nan 0