76 1001 ELKINS, JAMES; WAMSLEY, PAULA; HURST, DALE; ROMASHKIN, PAVEL; DUTTON, GEOFF U.S. DEPT OF COMMERCE, NOAA / CMDL / NITROUS OXIDE AND HALOCOMPOUNDS DIVISION ACATS STRAT 1 1 1995 10 26 1998 07 23 0 ELAPSED TIME IN SECONDS FROM 00:00:00 GMT ON SAMPLE DATE 7 1.0 1.0 1.0 1.0 1.0 1.0 1.0 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 Mean Age of Air (year) Total Br (ppt) Total Organic Br (ppt) Total Inorganic Br (ppt) Total Cl (ppb) Total Organic Cl (ppb) Total Inorganic Cl (ppb) 54 Total chlorine and bromine are based on in situ measurements of organic species from either the Airborne Chromatograph for Atmospheric Trace Species (ACATS-IV) [see Elkins et al., 1996] or the Lightweight Airborne Chromatograph Experiment (LACE). Mean age of the air in years from the tropical tropopause is calculated using tropospheric trends from Geller et al., [1997] and a formula from Volk et al., [1997]. Total chlorine calculations are based on total chlorine from Montzka et al., [1996] and model generated correlations from Woodbridge et al. [1995] are used for the missing chlorine species, HCFC-22 and CH3Cl. Total bromine calculations are from Wamsley et al., [1997] where missing bromine organic species (CH3Br, halon-2402, halon-1301, CH2Cl2, and CH2BrCl) are calculated from correlations of NCAR WAS data versus CFC-11 are used. All values derived from theta < 380 were excluded, because of influence from the troposphere. All calculations of total halogen and inorganic halogen assume no inorganic input from the troposphere (Cly, Bry=0). References: Elkins, J. W., D. W. Fahey, J. M. Gilligan, G. S. Dutton, T. J. Baring, C. M. Volk, R. E. Dunn, R. C. Myers, S. A. Montzka, P. R. Wamsley, A. H. Hayden, J. H. Butler, T. M. Thompson, T. H. Swanson, E. J. Dlugokencky, P. C. Novelli, D. F. Hurst, J. M. Lobert, S. J. Ciciora, R. J. McLaughlin, T. L. Thompson, R. H. Winkler, P. J. Fraser, L. P. Steele and M. P. Lucarelli, Airborne gas chromatograph for in situ measurements of long-lived species in the upper troposphere and lower stratosphere, Geophysical Research Letters, 23, 347-350, 1996 Geller, L. S., J. W. Elkins, J. M. Lobert, A. D. Clarke, D. F. Hurst, J. H. Butler and R. C. Myers, Tropospheric SF6: Observed latitudinal distribution and trends, derived emissions and interhemispheric exchange time, Geophysical Research Letters, 24, 1997. Montzka, S.A., J.H. Butler, R.C. Myers, T.M. Thompson, T.H. Swanson, A.D. Clarke, L.T. Lock, J.W. Elkins, Decline in the tropospheric abundance of halogen from halocarbons: Implications for stratospheric ozone depletion., Science, 272, 1318-1322, 1996. Volk, C. M., J. W. Elkins, D. W. Fahey, G. S. Dutton, J. M. Gilligan, M. Loewenstein, J. R. Podolske, K. R. Chan, and M. R. Gunson, Evaluation of source gas lifetimes from stratospheric observations, Journal of Geophysical Research, 102, 25543-64,1997. Wamsley, P. R., J. W. Elkins, D. W. Fahey, G. S. Dutton, C. M. Volk, R. C. Myers, S. A. Montzka, J. H. Butler, A. D. Clarke, P. J. Fraser, L. P. Steele, M. P. Lucarelli, E. L. Atlas, S. M. Schauffler, D. R. Blake, F. S. Rowland, W. T. Sturges, J. M. Lee, S. A. Penkett, A. Engel, R. M. Stimpfle, K. R. Chan, D. K. Weisenstein, M. K. W. Ko and R. J. Salawitch, Distribution of halon-1211 in the upper troposphere and lower stratosphere and the 1994 total bromine budget, Journal of Geophysical Research, 103, 1513-26, 1998. Woodbridge, E. L., J. W. Elkins, D. W. Fahey, L. E. Heidt, S. Solomon, T. J. Baring T. M. Gilpin, W. H. Pollock, S. M. Schauffler, E. L. Atlas, M. Loewenstein, J. R. Podolske, C. R. Webster, R. D. May, J. M. Gilligan, S. A. Montzka, K. A. Boering and R. J. Salawitch, Estimates of total organic and inorganic chlorine in the lower stratosphere from in situ and flask measurements, Journal of Geophysical Research, 100, 3057-3064, 1995. ACATS did not measure SF6 on this flight. Mean age of air cannot be calculated. 1 GMTs Age TotalBr CBry Bry TotalCl CCly Cly 63424 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63604 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63783 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63963 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64323 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64504 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64684 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64864 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65224 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65403 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65584 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65764 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66123 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66303 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66483 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66664 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67023 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67203 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67384 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67924 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68104 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68283 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68463 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68824 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69004 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69183 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69724 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69904 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70084 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70264 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70624 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70984 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71164 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71523 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71703 9999.00 9999.000 18.874 9999.000 9999.000 3.471 9999.000 71883 9999.00 9999.000 17.502 9999.000 9999.000 3.377 9999.000 72064 9999.00 9999.000 17.466 9999.000 9999.000 3.367 9999.000 72423 9999.00 9999.000 17.694 9999.000 9999.000 3.382 9999.000 72603 9999.00 9999.000 17.557 9999.000 9999.000 3.395 9999.000 72784 9999.00 9999.000 17.615 9999.000 9999.000 3.378 9999.000 72964 9999.00 9999.000 18.182 9999.000 9999.000 3.401 9999.000 73324 9999.00 9999.000 17.779 9999.000 9999.000 3.402 9999.000 73504 9999.00 9999.000 17.829 9999.000 9999.000 3.396 9999.000 73684 9999.00 9999.000 17.959 9999.000 9999.000 3.402 9999.000 74224 9999.00 9999.000 18.138 9999.000 9999.000 3.414 9999.000 74404 9999.00 9999.000 17.558 9999.000 9999.000 3.396 9999.000 74583 9999.00 9999.000 17.346 9999.000 9999.000 3.358 9999.000 74764 9999.00 9999.000 16.992 9999.000 9999.000 3.363 9999.000 75123 9999.00 9999.000 16.761 9999.000 9999.000 3.350 9999.000 75304 9999.00 9999.000 17.115 9999.000 9999.000 3.345 9999.000 75484 9999.00 9999.000 16.376 9999.000 9999.000 3.318 9999.000 75664 9999.00 9999.000 16.626 9999.000 9999.000 3.296 9999.000 76024 9999.00 9999.000 16.444 9999.000 9999.000 3.275 9999.000 76203 9999.00 9999.000 15.704 9999.000 9999.000 9999.000 9999.000 76384 9999.00 9999.000 16.483 9999.000 9999.000 3.295 9999.000 76564 9999.00 9999.000 16.300 9999.000 9999.000 3.302 9999.000 76923 9999.00 9999.000 15.858 9999.000 9999.000 3.245 9999.000 77103 9999.00 9999.000 14.102 9999.000 9999.000 3.061 9999.000 77284 9999.00 9999.000 11.664 9999.000 9999.000 2.817 9999.000 77464 9999.00 9999.000 9.855 9999.000 9999.000 2.565 9999.000 77823 9999.00 9999.000 7.574 9999.000 9999.000 2.234 9999.000 78004 9999.00 9999.000 6.756 9999.000 9999.000 2.075 9999.000 78184 9999.00 9999.000 6.619 9999.000 9999.000 2.086 9999.000 78364 9999.00 9999.000 6.005 9999.000 9999.000 9999.000 9999.000 78724 9999.00 9999.000 6.148 9999.000 9999.000 2.008 9999.000 78904 9999.00 9999.000 5.970 9999.000 9999.000 1.997 9999.000 79084 9999.00 9999.000 6.049 9999.000 9999.000 1.983 9999.000 79624 9999.00 9999.000 17.905 9999.000 9999.000 3.388 9999.000 79804 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79984 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 80164 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000