******************************************************************************** **** Source: R.G. Prinn **** **** Massachusetts Institute of Technology **** **** Cambridge, Massachusetts, U.S.A. **** **** **** **** R.F. Weiss **** **** Scripps Institution of Oceanography **** **** La Jolla, California, U.S.A. **** **** **** **** F.N. Alyea, D.M. Cunnold **** **** Georgia Institute of Technology **** **** Atlanta, Georgia, U.S.A. **** **** **** **** P.J. Fraser **** **** Commonwealth Scientific and Industrial Research Organisation **** **** Aspendale, Victoria, Australia **** **** **** **** P.G. Simmonds **** **** University of Bristol **** **** Bristol, U.K. **** **** **** **** A.J. Crawford, R.A. Rasmussen **** **** Oregon Graduate Institute of Science and Technology **** **** Portland, Oregon, U.S.A. **** **** **** **** R.D. Rosen **** **** Atmospheric and Environmental Research, Inc. **** **** Cambridge, Massachusetts, U.S.A. **** ******************************************************************************** CFC-11 ALE 1979 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 169.4 -99.9 1980 169.5 167.6 170.4 171.8 172.5 172.5 172.2 173.7 176.3 177.7 177.9 176.7 173.2 1981 176.3 177.3 177.4 178.5 178.9 179.5 180.0 180.7 182.7 184.8 185.8 186.0 180.6 1982 184.4 184.7 185.6 187.0 186.8 186.9 187.1 187.3 188.4 191.0 192.7 193.0 187.9 1983 192.9 193.0 194.4 196.1 196.8 198.8 200.5 201.1 199.9 203.2 204.0 202.1 198.5 1984 -99.9 203.9 203.5 205.5 205.4 205.2 204.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 CFC-11 GAGE 1983 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 196.1 198.6 199.1 200.6 -99.9 1984 199.7 200.4 200.6 202.5 202.7 202.6 202.8 202.6 205.4 207.8 208.9 209.8 203.8 1985 208.4 209.2 210.5 211.8 212.0 210.9 212.4 214.5 217.0 217.8 219.0 218.0 213.4 1986 218.1 219.1 220.6 223.9 225.1 225.4 224.3 225.0 229.5 230.5 231.5 232.8 225.5 1987 233.1 232.0 234.1 236.7 237.9 239.4 238.5 239.3 241.8 245.1 245.2 246.3 239.1 1988 245.7 245.2 246.4 247.7 248.5 248.6 248.5 250.0 252.4 253.3 253.3 253.2 249.4 1989 251.8 251.3 251.5 253.4 253.5 253.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 CFC-12 ALE 1980 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 326.2 325.4 -99.9 1981 326.9 328.1 328.7 329.5 330.7 332.3 333.2 336.0 339.4 342.9 343.4 343.3 334.5 1982 342.9 343.6 345.2 346.3 346.5 347.6 348.0 349.7 353.2 355.5 358.0 358.5 349.6 1983 355.1 355.4 357.8 359.2 360.3 363.4 365.1 367.2 369.9 374.5 376.8 378.6 365.3 1984 -99.9 378.5 377.4 379.8 379.5 381.1 382.2 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 CFC-12 GAGE 1983 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 368.8 372.7 373.5 376.3 -99.9 1984 374.5 375.7 375.0 377.6 378.3 379.5 380.3 381.1 385.0 391.0 392.2 393.2 382.0 1985 394.8 392.7 394.2 394.2 394.8 396.5 400.1 403.5 408.6 408.0 410.0 410.6 400.7 1986 409.4 410.9 412.8 416.0 416.3 418.1 417.4 419.7 430.3 432.9 431.9 434.7 420.9 1987 435.0 432.8 435.0 439.9 441.1 440.2 439.6 434.3 441.3 456.9 453.9 455.8 442.2 1988 456.0 455.0 456.9 460.0 461.3 462.1 462.8 466.2 471.3 473.5 471.9 473.6 464.2 1989 471.9 473.0 472.8 480.2 480.5 481.8 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 N2O ALE 1980 -99.9 -99.9 301.1 301.0 300.9 301.0 300.7 300.4 301.0 300.6 300.3 300.4 -99.9 1981 300.8 300.6 300.6 301.0 301.1 300.8 300.7 301.3 301.4 301.7 301.8 301.8 301.1 1982 302.0 302.3 302.5 302.3 302.5 302.5 302.4 302.5 302.9 303.1 302.9 302.6 302.5 1983 302.3 302.2 302.0 302.1 302.3 303.3 303.4 303.2 302.9 303.1 303.3 302.9 302.8 1984 -99.9 303.4 302.8 303.3 303.5 303.2 303.1 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 N2O GAGE 1983 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 301.0 301.3 301.7 302.5 -99.9 1984 302.6 302.6 302.7 302.9 303.7 304.0 303.9 303.8 303.7 303.8 304.1 304.1 303.5 1985 304.3 304.3 304.4 305.3 305.2 304.6 305.5 305.5 305.5 305.7 305.7 306.1 305.2 1986 305.9 306.6 307.0 307.1 306.2 306.5 306.8 307.3 307.4 307.8 307.1 306.8 306.9 1987 307.4 306.7 307.5 307.9 308.0 307.3 307.1 307.4 307.4 308.2 308.1 308.0 307.6 1988 308.2 308.4 308.5 308.7 309.2 309.1 308.7 308.5 308.7 308.8 308.9 309.1 308.7 1989 308.8 308.4 308.2 307.3 307.2 307.2 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9 -99.9