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 11 02 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 65379 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65559 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65739 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65919 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66279 9999.00 9999.000 13.179 9999.000 9999.000 9999.000 9999.000 66459 9999.00 9999.000 14.687 9999.000 9999.000 9999.000 9999.000 66639 9999.00 9999.000 14.378 9999.000 9999.000 9999.000 9999.000 66819 9999.00 9999.000 13.119 9999.000 9999.000 9999.000 9999.000 67179 9999.00 9999.000 10.029 9999.000 9999.000 2.597 9999.000 67359 9999.00 9999.000 9.333 9999.000 9999.000 2.465 9999.000 67539 9999.00 9999.000 9.043 9999.000 9999.000 2.423 9999.000 67719 9999.00 9999.000 8.514 9999.000 9999.000 2.359 9999.000 68079 9999.00 9999.000 7.670 9999.000 9999.000 2.225 9999.000 68259 9999.00 9999.000 7.625 9999.000 9999.000 2.235 9999.000 68439 9999.00 9999.000 8.127 9999.000 9999.000 2.289 9999.000 68619 9999.00 9999.000 8.150 9999.000 9999.000 2.326 9999.000 68979 9999.00 9999.000 7.871 9999.000 9999.000 2.262 9999.000 69159 9999.00 9999.000 7.748 9999.000 9999.000 2.241 9999.000 69339 9999.00 9999.000 7.632 9999.000 9999.000 2.226 9999.000 70779 9999.00 9999.000 7.123 9999.000 9999.000 2.158 9999.000 70959 9999.00 9999.000 7.209 9999.000 9999.000 2.148 9999.000 71139 9999.00 9999.000 6.768 9999.000 9999.000 2.095 9999.000 71679 9999.00 9999.000 6.841 9999.000 9999.000 2.088 9999.000 71859 9999.00 9999.000 6.867 9999.000 9999.000 2.123 9999.000 72039 9999.00 9999.000 6.655 9999.000 9999.000 2.053 9999.000 72219 9999.00 9999.000 7.020 9999.000 9999.000 2.147 9999.000 72579 9999.00 9999.000 7.685 9999.000 9999.000 2.254 9999.000 72939 9999.00 9999.000 6.623 9999.000 9999.000 2.086 9999.000 73119 9999.00 9999.000 4.512 9999.000 9999.000 1.672 9999.000 73479 9999.00 9999.000 4.938 9999.000 9999.000 1.764 9999.000 73659 9999.00 9999.000 5.495 9999.000 9999.000 1.884 9999.000 73839 9999.00 9999.000 5.606 9999.000 9999.000 9999.000 9999.000 74019 9999.00 9999.000 5.958 9999.000 9999.000 1.962 9999.000 74379 9999.00 9999.000 5.183 9999.000 9999.000 1.823 9999.000 74559 9999.00 9999.000 5.252 9999.000 9999.000 1.819 9999.000 74739 9999.00 9999.000 5.882 9999.000 9999.000 1.940 9999.000 74919 9999.00 9999.000 7.511 9999.000 9999.000 2.196 9999.000 75279 9999.00 9999.000 8.449 9999.000 9999.000 2.367 9999.000 75459 9999.00 9999.000 8.785 9999.000 9999.000 2.417 9999.000 75639 9999.00 9999.000 8.893 9999.000 9999.000 2.431 9999.000 76179 9999.00 9999.000 9.035 9999.000 9999.000 2.458 9999.000 76359 9999.00 9999.000 9.020 9999.000 9999.000 2.458 9999.000 76539 9999.00 9999.000 9.296 9999.000 9999.000 2.498 9999.000 76719 9999.00 9999.000 9.120 9999.000 9999.000 2.477 9999.000 77079 9999.00 9999.000 8.927 9999.000 9999.000 2.437 9999.000 77259 9999.00 9999.000 8.929 9999.000 9999.000 2.454 9999.000 77439 9999.00 9999.000 8.613 9999.000 9999.000 2.399 9999.000 77619 9999.00 9999.000 8.753 9999.000 9999.000 2.422 9999.000 77979 9999.00 9999.000 12.359 9999.000 9999.000 2.877 9999.000 78159 9999.00 9999.000 14.831 9999.000 9999.000 3.176 9999.000 78339 9999.00 9999.000 16.953 9999.000 9999.000 3.327 9999.000 78519 9999.00 9999.000 17.780 9999.000 9999.000 3.393 9999.000 78879 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79059 9999.00 9999.000 18.389 9999.000 9999.000 3.437 9999.000 79239 9999.00 9999.000 16.462 9999.000 9999.000 3.286 9999.000 79419 9999.00 9999.000 15.860 9999.000 9999.000 3.259 9999.000 79779 9999.00 9999.000 13.951 9999.000 9999.000 3.080 9999.000 79959 9999.00 9999.000 13.561 9999.000 9999.000 3.036 9999.000 80139 9999.00 9999.000 10.455 9999.000 9999.000 2.627 9999.000 80319 9999.00 9999.000 10.657 9999.000 9999.000 2.701 9999.000 80679 9999.00 9999.000 10.546 9999.000 9999.000 2.691 9999.000 80859 9999.00 9999.000 10.643 9999.000 9999.000 2.705 9999.000 81039 9999.00 9999.000 10.983 9999.000 9999.000 2.792 9999.000 81579 9999.00 9999.000 11.194 9999.000 9999.000 9999.000 9999.000 81759 9999.00 9999.000 10.818 9999.000 9999.000 9999.000 9999.000 81939 9999.00 9999.000 10.870 9999.000 9999.000 9999.000 9999.000 82119 9999.00 9999.000 10.664 9999.000 9999.000 9999.000 9999.000 82479 9999.00 9999.000 10.790 9999.000 9999.000 9999.000 9999.000 82659 9999.00 9999.000 10.865 9999.000 9999.000 9999.000 9999.000 82839 9999.00 9999.000 10.805 9999.000 9999.000 9999.000 9999.000 83019 9999.00 9999.000 10.764 9999.000 9999.000 2.777 9999.000