The Reston Chlorofluorocarbon Laboratory

Download

Air Curve

Air Curve

Atmospheric mixing ratios of CFC-11, CFC-12, CFC-113,CFC-13 x 100, SF6 x 100, and SF5CF3 x 1000 for Northern Hemisphere atmosphere.

Data for the construction of the mixing ratios in this figure were obtained from the CMDL/NOAA website URL http://www.cmdl.noaa.gov/ (Elkins, Butler, Thompson, and Montzka, 2003; Montzka et al., 1996 and 1999), from the CDIAC website URL http://cdiac.esd.ornl.gov/ (Walker et al., 2000; Prinn et al., 2000; Cunnold et al., 1997). Data that was used to construct the Northern Hemisphere 1980 to 1990 atmospheric concentrations for CFC-113 were obtained from a number of sources (Busenberg and Plummer, 1993; Wisegarver and Gammon, 1988; Gilpin, 1991; Wang 1993 and 1997; and Tominaga, 1993). The pre-1980's mixing ratios were reconstructed from production and atmospheric release data (Fisher and Midgley, 1993; and AFEAS, 2003, http://www.afeas.org/ ).

Data Table

Atmospheric mixing ratios of CFC-11, CFC-12, CFC-13, CFC-113, SF6 and SF5CF3 in North America (NH) and CFCs in Southern Hemisphere (SH) air compiled by the U.S. Geological Survey Chlorofluorocarbon Laboratory.

CFC-11, CFC-12, CFC-113 mixing ratios are in parts per trillion (ppt) and on the SIO-2005 scale. SF6 mixing ratios are in parts per trillion (ppt) and are on the NOAA 2000, 2006 scale. CFC-13 and SF5CF3 mixing ratios are in parts per trillion (ppt).

NH revised July 2009

SH revised July 2009

Year
NH
NH
NH
NH
NH
NH
SH
SH
SH
SH
CFC-12
CFC-11
CFC-113
CFC-13
SF6
SF5CF3
CFC-12
CFC-11
CFC-113
SF6
1940.0 0.34 0.01 0.00 0 0.05 0 0.25 0.00 0.00 0.05
1940.5 0.40 0.01 0.00 0 0.05 0 0.30 0.00 0.00 0.05
1941.0 0.48 0.02 0.00 0 0.05 0 0.35 0.00 0.00 0.05
1941.5 0.56 0.02 0.00 0 0.05 0 0.40 0.00 0.00 0.05
1942.0 0.66 0.02 0.00 0 0.05 0 0.45 0.00 0.00 0.05
1942.5 0.76 0.02 0.00 0 0.05 0 0.50 0.00 0.00 0.05
1943.0 0.88 0.03 0.00 0 0.05 0 0.60 0.00 0.00 0.05
1943.5 1.01 0.03 0.01 0 0.05 0 0.70 0.00 0.00 0.05
1944.0 1.18 0.04 0.01 0 0.05 0 0.80 0.00 0.00 0.05
1944.5 1.34 0.04 0.03 0 0.05 0 0.90 0.00 0.00 0.05
1945.0 1.56 0.05 0.04 0 0.05 0 1.05 0.00 0.00 0.05
1945.5 1.77 0.05 0.06 0 0.05 0 1.20 0.00 0.00 0.05
1946.0 2.15 0.07 0.07 0 0.05 0 1.45 0.05 0.00 0.05
1946.5 2.53 0.08 0.09 0 0.05 0 1.70 0.10 0.00 0.05
1947.0 3.11 0.11 0.11 0 0.05 0 2.05 0.11 0.00 0.05
1947.5 3.70 0.14 0.13 0 0.05 0 2.40 0.12 0.00 0.05
1948.0 4.37 0.20 0.15 0 0.05 0 2.90 0.16 0.00 0.05
1948.5 5.04 0.25 0.17 0 0.05 0 3.40 0.20 0.00 0.05
1949.0 5.76 0.34 0.20 0 0.05 0 4.05 0.25 0.00 0.05
1949.5 6.48 0.42 0.22 0 0.05 0 4.70 0.30 0.00 0.05
1950.0 7.28 0.55 0.25 0 0.05 0 5.35 0.35 0.00 0.05
1950.5 8.07 0.67 0.28 0 0.05 0 6.00 0.40 0.00 0.05
1951.0 8.93 0.85 0.31 0 0.05 0 6.70 0.55 0.00 0.05
1951.5 9.80 1.02 0.34 0 0.05 0 7.40 0.70 0.00 0.05
1952.0 10.7 1.27 0.37 0 0.05 0 8.2 0.85 0.00 0.05
1952.5 11.6 1.52 0.41 0 0.05 0 9.0 1.00 0.00 0.05
1953.0 12.6 1.87 0.44 0 0.05 0 9.9 1.25 0.00 0.05
1953.5 13.6 2.20 0.49 0 0.05 0 10.7 1.50 0.00 0.05
1954.0 14.7 2.63 0.53 0 0.06 0 11.7 1.85 0.00 0.05
1954.5 15.9 3.04 0.58 0 0.06 0 12.6 2.20 0.00 0.05
1955.0 17.1 3.56 0.63 0 0.06 0 13.7 2.60 0.00 0.05
1955.5 18.4 4.07 0.69 0 0.06 0 14.7 3.00 0.00 0.06
1956.0 19.9 4.71 0.75 0 0.06 0 15.9 3.50 0.00 0.06
1956.5 21.4 5.35 0.81 0 0.06 0 17.1 4.00 0.00 0.06
1957.0 23.1 6.06 0.88 0 0.06 0 18.5 4.60 0.00 0.06
1957.5 24.7 6.77 0.95 0 0.06 0 19.9 5.20 0.00 0.06
1958.0 26.5 7.42 1.03 0 0.06 0 21.5 5.85 0.00 0.06
1958.5 28.3 8.06 1.11 0 0.06 0 23.0 6.50 0.00 0.06
1959.0 30.2 8.72 1.19 0 0.06 0 24.7 7.15 0.00 0.06
1959.5 32.2 9.37 1.29 0 0.06 0 26.3 7.80 0.00 0.06
1960.0 34.5 10.2 1.39 0 0.07 0 28.2 8.5 0.00 0.06
1960.5 36.9 11.1 1.50 0 0.07 0 30.1 9.2 0.00 0.06
1961.0 39.5 12.2 1.61 0 0.07 0 32.3 10.1 0.04 0.06
1961.5 42.1 13.3 1.74 0 0.08 0 34.4 10.9 0.07 0.07
1962.0 45.1 14.8 1.86 0 0.08 0 36.9 12.0 0.09 0.07
1962.5 48.1 16.2 2.00 0 0.08 0 39.4 13.1 0.10 0.07
1963.0 51.6 17.9 2.15 0 0.09 0 42.3 14.5 0.20 0.08
1963.5 55.1 19.7 2.32 0 0.10 0 45.1 15.8 0.30 0.08
1964.0 59.2 21.7 2.49 0 0.10 0 48.5 17.5 0.40 0.08
1964.5 63.3 23.8 2.67 0 0.11 0 51.8 19.2 0.50 0.09
1965.0 67.9 26.1 2.86 0 0.12 0 55.7 21.2 0.65 0.10
1965.5 72.5 28.4 3.08 0 0.13 0.001 59.5 23.1 0.80 0.10
1966.0 77.6 31.0 3.29 0 0.14 0.002 63.8 25.4 0.95 0.11
1966.5 82.8 33.6 3.54 0 0.15 0.002 68.1 27.6 1.10 0.12
1967.0 88.5 36.5 3.79 0 0.16 0.003 73.0 30.2 1.30 0.13
1967.5 94.3 39.5 4.07 0 0.18 0.003 77.9 32.7 1.50 0.14
1968.0 100.7 42.8 4.35 0 0.19 0.003 83.4 35.5 1.75 0.15
1968.5 107.2 46.1 4.67 0 0.20 0.004 88.8 38.3 2.00 0.16
1969.0 114.4 50.0 5.00 0.13 0.21 0.004 94.9 41.6 2.30 0.18
1969.5 121.5 53.8 5.37 0.20 0.22 0.005 101.0 44.8 2.60 0.19
1970.0 129.3 58.2 5.75 0.26 0.23 0.005 107.9 48.6 2.95 0.20
1970.5 137.2 62.5 6.17 0.33 0.25 0.006 114.7 52.3 3.30 0.21
1971.0 145.5 67.3 6.60 0.39 0.26 0.006 122.2 56.5 3.70 0.22
1971.5 153.9 72.1 7.08 0.46 0.27 0.007 129.6 60.7 4.10 0.23
1972.0 162.9 77.4 7.57 0.52 0.28 0.007 137.6 65.4 4.55 0.25
1972.5 172.0 82.8 8.14 0.59 0.30 0.008 145.6 70.0 5.00 0.26
1973.0 182.0 88.9 8.69 0.65 0.32 0.009 154.4 75.2 5.55 0.27
1973.5 192.1 95.0 9.33 0.72 0.34 0.010 163.2 80.4 6.10 0.28
1974.0 202.9 101.6 9.97 0.79 0.36 0.010 172.9 86.3 6.75 0.30
1974.5 213.7 108.3 10.7 0.85 0.39 0.011 182.5 92.2 7.4 0.32
1975.0 224.0 113.9 11.4 0.92 0.42 0.012 192.7 98.5 8.1 0.34
1975.5 234.3 121.4 12.3 0.98 0.45 0.013 202.9 104.7 8.8 0.36
1976.0 244.2 128.2 13.1 1.05 0.48 0.014 213.0 110.9 9.6 0.39
1976.5 254.0 134.4 14.1 1.11 0.52 0.015 223.1 117.1 10.4 0.42
1977.0 263.3 141.3 15.0 1.18 0.55 0.017 232.9 123.2 11.3 0.45
1977.5 272.5 145.9 16.2 1.24 0.59 0.018 242.6 129.3 12.2 0.48
1978.0 282.4 149.1 17.3 1.31 0.63 0.019 251.9 135.1 13.3 0.52
1978.5 292.9 155.6 18.5 1.38 0.68 0.021 261.1 140.8 14.3 0.55
1979.0 298.1 158.9 19.8 1.44 0.73 0.022 267.3 144.8 15.5 0.59
1979.5 301.2 161.7 21.2 1.51 0.77 0.023 273.5 148.8 16.6 0.63
1980.0 311.2 167.7 22.7 1.57 0.83 0.025 282.9 154.1 18.0 0.68
1980.5 317.4 171.9 24.3 1.64 0.88 0.027 292.3 159.3 19.3 0.73
1981.0 322.7 175.0 25.8 1.70 0.94 0.029 300.6 163.6 20.8 0.77
1981.5 333.8 178.7 27.5 1.77 0.99 0.030 308.8 167.8 22.2 0.83
1982.0 343.6 182.8 29.1 1.83 1.05 0.032 317.2 172.0 23.8 0.88
1982.5 352.7 187.3 30.9 1.90 1.12 0.034 325.5 176.1 25.3 0.94
1983.0 361.6 192.2 32.7 1.96 1.18 0.036 334.0 180.3 26.7 0.99
1983.5 372.2 196.9 34.9 2.03 1.25 0.038 342.5 184.5 28.1 1.05
1984.0 378.6 200.8 37.2 2.10 1.32 0.041 351.0 188.5 29.8 1.12
1984.5 386.2 204.9 39.9 2.16 1.39 0.043 359.4 192.5 31.4 1.18
1985.0 395.4 210.1 42.5 2.23 1.47 0.045 368.8 197.4 33.7 1.25
1985.5 403.3 216.1 45.4 2.29 1.54 0.047 378.2 202.2 36.0 1.32
1986.0 414.6 221.8 48.2 2.36 1.62 0.050 387.4 206.9 38.5 1.39
1986.5 423.5 226.7 51.3 2.42 1.70 0.052 396.5 211.5 41.0 1.47
1987.0 433.6 232.2 54.5 2.49 1.79 0.055 406.4 217.0 44.0 1.54
1987.5 449.3 239.7 58.0 2.55 1.87 0.058 416.3 222.4 47.0 1.62
1988.0 459.5 247.3 61.5 2.62 1.96 0.060 426.1 227.9 50.2 1.70
1988.5 469.1 252.6 65.1 2.68 2.05 0.063 435.8 233.4 53.3 1.79
1989.0 476.7 256.0 68.8 2.75 2.15 0.066 445.1 237.9 56.5 1.87
1989.5 484.0 260.5 71.8 2.82 2.24 0.069 454.4 242.3 59.7 1.96
1990.0 493.5 264.3 74.8 2.88 2.34 0.071 463.6 246.8 62.9 2.05
1990.5 497.1 265.4 77.0 2.95 2.44 0.074 472.7 251.2 66.1 2.15
1991.0 503.4 267.7 79.1 3.01 2.54 0.077 480.1 254.0 68.7 2.24
1991.5 508.8 268.6 80.6 3.08 2.65 0.080 487.4 256.8 71.2 2.34
1992.0 517.7 270.0 81.9 3.14 2.77 0.083 492.9 258.9 73.8 2.44
1992.5 520.5 270.7 82.7 3.21 2.88 0.086 498.4 260.9 76.4 2.54
1993.0 523.0 270.8 83.3 3.27 2.99 0.089 502.7 261.8 78.1 2.65
1993.5 526.0 270.9 84.1 3.34 3.10 0.092 507.0 262.6 79.8 2.75
1994.0 528.2 271.3 84.5 3.40 3.22 0.095 510.9 263.2 80.7 2.86
1994.5 533.3 270.7 84.8 3.47 3.33 0.098 514.7 263.8 81.6 2.97
1995.0 534.7 269.6 85.1 3.54 3.44 0.102 517.8 263.5 82.0 3.09
1995.5 534.8 269.0 85.3 3.60 3.55 0.105 520.9 263.2 82.3 3.20
1996.0 535.7 268.4 85.4 3.67 3.67 0.108 523.6 263.2 82.5 3.32
1996.5 537.4 267.7 85.3 3.73 3.78 0.111 526.2 263.1 82.6 3.44
1997.0 539.3 267.0 85.2 3.80 3.89 0.114 528.4 262.6 82.7 3.57
1997.5 540.9 266.3 85.0 3.86 4.00 0.117 530.6 262.1 82.8 3.69
1998.0 542.1 265.5 84.7 3.93 4.12 0.119 532.2 261.6 82.8 3.82
1998.5 543.0 264.7 84.4 3.99 4.23 0.122 533.8 261.1 82.7 3.95
1999.0 544.0 263.9 84.1 4.06 4.34 0.125 535.3 260.5 82.5 4.08
1999.5 544.6 263.0 83.7 4.13 4.45 0.128 536.7 259.9 82.2 4.22
2000.0 545.1 262.1 83.3 4.19 4.57 0.131 538.0 257.9 82.0 4.32
2000.5 545.5 261.1 83.0 4.26 4.68 0.133 538.7 257.0 81.7 4.43
2001.0 546.0 260.2 82.7 4.32 4.79 0.136 539.7 256.5 81.5 4.54
2001.5 546.2 259.1 82.4 4.39 4.91 0.138 540.3 255.6 81.2 4.65
2002.0 546.3 258.1 82.0 4.45 5.02 0.141 541.4 255.2 81.0 4.77
2002.5 546.3 257.0 81.7 4.52 5.13 0.143 541.3 254.0 80.4 4.89
2003.0 546.0 255.8 81.3 4.58 5.24 0.145 541.7 252.6 80.1 5.01
2003.5 545.7 254.7 80.9 4.65 5.36 0.147 541.8 251.9 79.7 5.14
2004.0 545.3 253.5 80.6 4.71 5.47 0.149 542.0 251.8 79.6 5.27
2004.5 544.8 252.2 80.2 4.78 5.58 0.151 541.5 250.5 79.1 5.40
2005.0 544.2 250.9 79.7 4.85 5.69 0.152 541.6 249.4 78.8 5.53
2005.5 543.3 249.6 79.3 4.91 5.81 0.154 540.6 247.9 78.4 5.67
2006.0 542.4 248.3 78.9 4.98 5.92 0.155 540.5 247.1 78.2 5.78
2006.5 541.3 246.9 78.4 5.04 6.03 0.156 539.8 245.7 77.8 5.89
2007.0 540.1 245.4 78.0 5.11 6.14 0.157 539.2 245.1 77.6 6.00
2007.5 538.7 244.0 77.5 5.17 6.26 0.157 537.8 243.7 77.0 6.11
2008.0 537.1 242.5 77.0 5.24 6.37 0.158 537.5 243.3 76.7 6.22
2008.5 535.5 240.9 76.5 6.48 537.1 242.9 76.4 6.33
2009.0 533.7 239.4 76.0 6.59 536.7 242.4 76.1 6.44
2009.5 531.7 237.7 75.5 6.71 536.4 242.0 75.8 6.55
2010.0 529.6 236.1 74.9 6.82 536.0 241.5 75.5 6.66

 

References

AFEAS (Alternative Fluorocarbon Environmental Acceptability Study), 2003, Production, sales and atmospheric release of fluorocarbons through 2001, AFEAS, Washington, D.C., URL http://www.afeas.org/

Busenberg, E., and Plummer, L.N., 1993, Use of trichlorofluoprocarbon-113 (CFC-113) as a hydrologic tracer and age-dating tool for young ground water, (abs.) Geological Society of America, 1993 Annual Meeting, Abstracts with Programs, 1993, p. A-365.

Cunnold, D., R. Weiss, R. Prinn, D. Hartley, P. Simmonds, P. Fraser, B. Miller, F. Alyea, and L. Porter, 1997, GAGE/AGAGE measurements indicating reductions in global emissions of CCl3F and CCl2F2 in 1992-1994. J. Geophys. Res., 102, 1259-1269.

Fisher, D. A., and Midgley, P. M., 1993, Production and release to the atmosphere of CFCs 113, 114 and 115. Atmos. Environ., 27A, 271-276

Gilpin, T. M., 1991, Global concentrations of three chlorofluorocarbons, 1984-1988. PH.D. Dissertation, University of California at Irvine, 355p.

Montzka, S.A., J. H. Butler, J. W. Elkins, T. M. Thompson, A. D. Clarke, and L. T. Lock, 1999, Present and Future Trends in the Atmospheric Burden of Ozone-Depleting Halogens, Nature, 398, 690-694.

Montzka, S.A., J. H. Butler, R. C. Myers, T. M. Thompson, T. H. Swanson, A. D. Clarke, L. T. Lock, and J. W. Elkins, 1996, Decline in the tropospheric abundance of halogen from halocarbons: Implications for stratospheric ozone depletion, Science, 272, 1318-1322.

Prinn, R.G., R.F. Weiss, P.J. Fraser, P.G. Simmonds, D.M. Cunnold, F.N. Alyea, S. O'Doherty, P. Salameh, B.R. Miller, J. Huang, R.H.J. Wang, D.E. Hartley, C. Harth, L.P. Steele, G. Sturrock, P.M. Midgely, and A. McCulloch, 2000, A history of chemically and radiatively important gases in air deducedfrom ALE/GAGE/AGAGE, J. Geophys. Res., 115, 17751-17792.

Tominaga, T., 1992, Chlorofluorocarbons in the atmosphere: Trends and vertical profiles. Pure Appl. Chem., 64, 529-536.

Walker, S.J., Weiss, R.F. and Salameh, P. K., 2000, Reconstructed histories of the annual mean atmospheric fractions for halocarbons CFC-11, CFC-12, and CFC-113, and carbon tetrachloride. Jour. Geophys. Res., v. 105, C6, 14285-14296.

Wang, J. L. C., 1993, Global concentrations of selected halocarbons, 1988-1992 PH.D. Dissertation, University of California at Irvine, 179p.

Wang, J. L. C., 1997, Calibration of CCl2FCClF2 (CFC-113) and its effects on the atmospheric log-term measurements, Jour. Chinese Chem. Soc., v.44, 17-22.

Wisegarver, D.P., and Gammon, R.H., 1988, A new transient tracer: Measured vertical distributio of CCl2FCClF2 (F-113) in the North Pacific Gyre, Geophys. Res. Letters, v. 15, 188-191.