# file: BRW_F12_MM.dat # # Atmospheric measurements of F12 (Chloroflurocarbon-12) # 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-12 data from # the NOAA/ESRL halocarbons original flask program. # # Calibration scale used: NOAA 2008 # # 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 # F12oldGCBRWyr F12oldGCBRWmon F12oldGCBRWm F12oldGCBRWsd F12oldGCBRWn 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 nan nan 0 1977 9 nan nan 0 1977 10 nan nan 0 1977 11 nan nan 0 1977 12 nan nan 0 1978 1 nan nan 0 1978 2 nan nan 0 1978 3 nan nan 0 1978 4 289.6 8.7 2 1978 5 nan nan 0 1978 6 nan nan 0 1978 7 285.2 6.7 4 1978 8 nan nan 0 1978 9 290.6 7.5 4 1978 10 295.1 9.5 6 1978 11 298.4 8.5 6 1978 12 298.3 11.7 7 1979 1 292.6 11.9 7 1979 2 295.1 10.8 8 1979 3 301.2 11.9 8 1979 4 294.6 4.7 8 1979 5 nan nan 0 1979 6 297.5 8.1 8 1979 7 298.5 5.6 10 1979 8 297.6 4.7 4 1979 9 305.5 6.6 6 1979 10 302.3 5.5 10 1979 11 310.7 13.1 5 1979 12 310.0 5.9 7 1980 1 311.7 6.4 10 1980 2 306.9 5.9 8 1980 3 309.5 5.7 8 1980 4 315.2 4.7 5 1980 5 314.6 6.0 8 1980 6 312.3 7.2 6 1980 7 308.7 5.9 8 1980 8 312.6 5.9 4 1980 9 318.2 10.4 8 1980 10 317.2 4.9 6 1980 11 326.2 9.6 8 1980 12 334.6 5.2 6 1981 1 321.8 7.5 6 1981 2 322.2 9.9 4 1981 3 325.9 6.8 10 1981 4 338.2 17.5 6 1981 5 333.5 11.6 8 1981 6 334.3 14.8 6 1981 7 333.3 7.2 8 1981 8 343.8 5.7 4 1981 9 334.4 5.4 6 1981 10 339.9 11.8 10 1981 11 340.2 5.8 6 1981 12 343.1 7.4 8 1982 1 347.4 13.5 6 1982 2 350.8 14.6 6 1982 3 345.8 8.8 9 1982 4 347.8 6.2 8 1982 5 348.6 5.7 6 1982 6 343.4 6.1 4 1982 7 nan nan 0 1982 8 348.9 5.5 8 1982 9 351.2 5.3 8 1982 10 356.6 8.4 6 1982 11 360.1 7.9 8 1982 12 359.8 8.7 10 1983 1 362.5 5.2 6 1983 2 363.0 8.4 6 1983 3 361.9 4.5 6 1983 4 362.4 5.9 8 1983 5 364.7 6.8 2 1983 6 361.5 6.1 6 1983 7 361.8 6.0 6 1983 8 364.4 6.3 6 1983 9 373.9 10.3 4 1983 10 377.1 7.9 8 1983 11 379.1 14.0 10 1983 12 367.9 14.2 8 1984 1 379.7 13.4 8 1984 2 383.8 6.6 6 1984 3 371.8 12.2 6 1984 4 nan nan 0 1984 5 nan nan 0 1984 6 nan nan 0 1984 7 nan nan 0 1984 8 nan nan 0 1984 9 nan nan 0 1984 10 nan nan 0 1984 11 nan nan 0 1984 12 nan nan 0 1985 1 nan nan 0 1985 2 nan nan 0 1985 3 388.4 6.8 6 1985 4 390.8 6.5 10 1985 5 393.5 9.1 8 1985 6 397.5 11.7 8 1985 7 389.1 6.0 8 1985 8 393.0 7.2 7 1985 9 402.0 7.1 9 1985 10 407.1 8.1 6 1985 11 410.4 7.8 4 1985 12 412.4 8.3 8 1986 1 411.8 8.7 6 1986 2 413.6 5.7 6 1986 3 415.1 8.4 6 1986 4 416.6 8.2 8 1986 5 413.1 7.6 5 1986 6 415.0 9.4 6 1986 7 413.0 7.3 7 1986 8 411.1 3.9 2 1986 9 413.1 6.3 5 1986 10 421.9 4.6 5 1986 11 425.1 6.5 5 1986 12 428.8 4.3 6 1987 1 427.2 4.1 3 1987 2 428.1 7.8 2 1987 3 435.1 5.3 3 1987 4 433.9 4.6 2 1987 5 426.1 8.6 5 1987 6 423.4 6.0 4 1987 7 437.7 19.9 5 1987 8 426.8 5.7 6 1987 9 437.0 9.7 5 1987 10 440.0 6.2 10 1987 11 448.5 13.6 7 1987 12 463.5 10.0 4 1988 1 462.5 8.9 6 1988 2 464.5 7.4 7 1988 3 465.8 5.4 3 1988 4 466.2 5.5 4 1988 5 463.3 6.7 7 1988 6 466.0 9.6 6 1988 7 466.4 6.3 8 1988 8 nan nan 0 1988 9 475.9 11.2 6 1988 10 475.7 5.9 8 1988 11 489.2 8.3 4 1988 12 481.3 3.8 4 1989 1 nan nan 0 1989 2 478.9 8.4 2 1989 3 480.1 5.6 8 1989 4 480.5 5.6 8 1989 5 481.8 8.2 6 1989 6 477.4 5.1 4 1989 7 nan nan 0 1989 8 481.7 5.0 2 1989 9 485.5 6.0 10 1989 10 489.5 6.8 7 1989 11 496.7 9.1 8 1989 12 497.8 8.1 8 1990 1 500.0 8.8 6 1990 2 517.6 16.8 6 1990 3 501.8 18.5 7 1990 4 494.6 6.8 8 1990 5 494.0 5.8 8 1990 6 496.5 6.3 8 1990 7 497.1 14.5 6 1990 8 493.1 7.8 5 1990 9 494.2 6.3 4 1990 10 500.4 4.8 6 1990 11 501.9 7.4 8 1990 12 502.5 8.2 8 1991 1 505.9 6.8 7 1991 2 506.6 5.8 6 1991 3 509.7 10.8 4 1991 4 505.8 4.0 5 1991 5 nan nan 0 1991 6 505.2 6.0 8 1991 7 507.8 13.2 6 1991 8 506.1 4.2 6 1991 9 511.0 5.4 8 1991 10 514.7 6.7 8 1991 11 516.4 6.5 10 1991 12 nan nan 0 1992 1 520.0 9.3 8 1992 2 520.7 12.5 4 1992 3 nan nan 0 1992 4 519.8 5.7 6 1992 5 519.9 3.8 4 1992 6 528.4 5.2 4 1992 7 521.6 7.0 7 1992 8 519.2 8.3 8 1992 9 523.9 8.6 3 1992 10 530.7 6.9 6 1992 11 537.6 16.4 6 1992 12 529.1 5.6 4 1993 1 530.5 6.0 2 1993 2 519.1 4.7 2 1993 3 nan nan 0 1993 4 526.3 8.5 3 1993 5 524.9 6.6 5 1993 6 526.4 40.5 2 1993 7 526.9 21.2 6 1993 8 535.0 13.2 7 1993 9 523.7 7.7 6 1993 10 528.7 8.8 10 1993 11 524.4 5.6 6 1993 12 526.6 6.3 9 1994 1 525.6 4.8 8 1994 2 528.1 7.8 8 1994 3 527.2 4.2 4 1994 4 522.2 4.3 6 1994 5 520.4 3.9 5 1994 6 519.7 5.4 6 1994 7 518.6 5.2 9 1994 8 519.6 4.3 8 1994 9 520.7 4.1 8 1994 10 522.6 5.0 10 1994 11 524.0 4.2 8 1994 12 526.8 5.9 8 1995 1 525.8 4.8 7 1995 2 525.3 4.4 8 1995 3 525.1 4.9 7 1995 4 526.1 6.2 7 1995 5 524.2 4.5 9 1995 6 523.7 4.9 8 1995 7 524.6 5.3 7 1995 8 520.9 6.3 8 1995 9 515.9 9.4 10 1995 10 518.9 6.8 6 1995 11 525.7 9.2 5 1995 12 nan nan 0