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 24 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 54428 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 54608 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 54788 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 54968 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55327 9999.00 9999.000 17.099 9999.000 9999.000 9999.000 9999.000 55508 9999.00 9999.000 14.652 9999.000 9999.000 9999.000 9999.000 55688 9999.00 9999.000 12.445 9999.000 9999.000 9999.000 9999.000 55868 9999.00 9999.000 12.584 9999.000 9999.000 2.911 9999.000 56228 9999.00 9999.000 10.336 9999.000 9999.000 2.640 9999.000 56408 9999.00 9999.000 10.104 9999.000 9999.000 2.584 9999.000 56588 9999.00 9999.000 9.777 9999.000 9999.000 2.571 9999.000 56768 9999.00 9999.000 9.507 9999.000 9999.000 2.531 9999.000 57128 9999.00 9999.000 8.668 9999.000 9999.000 2.403 9999.000 57308 9999.00 9999.000 8.877 9999.000 9999.000 2.453 9999.000 57488 9999.00 9999.000 8.699 9999.000 9999.000 2.418 9999.000 57668 9999.00 9999.000 8.709 9999.000 9999.000 2.433 9999.000 58028 9999.00 9999.000 8.114 9999.000 9999.000 2.325 9999.000 58208 9999.00 9999.000 7.643 9999.000 9999.000 2.250 9999.000 58388 9999.00 9999.000 7.728 9999.000 9999.000 2.287 9999.000 58928 9999.00 9999.000 5.827 9999.000 9999.000 1.957 9999.000 59108 9999.00 9999.000 5.529 9999.000 9999.000 1.928 9999.000 59288 9999.00 9999.000 5.024 9999.000 9999.000 1.798 9999.000 59468 9999.00 9999.000 5.004 9999.000 9999.000 1.830 9999.000 59828 9999.00 9999.000 5.730 9999.000 9999.000 1.953 9999.000 60008 9999.00 9999.000 4.908 9999.000 9999.000 1.782 9999.000 60188 9999.00 9999.000 4.391 9999.000 9999.000 1.733 9999.000 60728 9999.00 9999.000 5.067 9999.000 9999.000 1.812 9999.000 60908 9999.00 9999.000 5.624 9999.000 9999.000 1.916 9999.000 61088 9999.00 9999.000 8.024 9999.000 9999.000 2.302 9999.000 61268 9999.00 9999.000 7.633 9999.000 9999.000 2.253 9999.000 61628 9999.00 9999.000 7.731 9999.000 9999.000 2.262 9999.000 61987 9999.00 9999.000 7.191 9999.000 9999.000 2.176 9999.000 62167 9999.00 9999.000 6.825 9999.000 9999.000 2.107 9999.000 62528 9999.00 9999.000 8.492 9999.000 9999.000 2.366 9999.000 62708 9999.00 9999.000 8.651 9999.000 9999.000 2.407 9999.000 62888 9999.00 9999.000 8.397 9999.000 9999.000 2.350 9999.000 63068 9999.00 9999.000 9.417 9999.000 9999.000 2.509 9999.000 63428 9999.00 9999.000 8.498 9999.000 9999.000 2.377 9999.000 63608 9999.00 9999.000 7.982 9999.000 9999.000 2.285 9999.000 63788 9999.00 9999.000 7.970 9999.000 9999.000 2.314 9999.000 63968 9999.00 9999.000 7.398 9999.000 9999.000 2.189 9999.000 64328 9999.00 9999.000 6.936 9999.000 9999.000 2.126 9999.000 64508 9999.00 9999.000 5.908 9999.000 9999.000 1.980 9999.000 64688 9999.00 9999.000 6.393 9999.000 9999.000 2.039 9999.000 65227 9999.00 9999.000 4.417 9999.000 9999.000 1.715 9999.000 65407 9999.00 9999.000 4.030 9999.000 9999.000 1.620 9999.000 65588 9999.00 9999.000 3.847 9999.000 9999.000 1.619 9999.000 65768 9999.00 9999.000 3.679 9999.000 9999.000 1.548 9999.000 66127 9999.00 9999.000 2.963 9999.000 9999.000 1.407 9999.000 66308 9999.00 9999.000 3.403 9999.000 9999.000 1.512 9999.000 66488 9999.00 9999.000 3.696 9999.000 9999.000 1.566 9999.000 66668 9999.00 9999.000 3.565 9999.000 9999.000 1.557 9999.000 67028 9999.00 9999.000 2.812 9999.000 9999.000 1.394 9999.000 67208 9999.00 9999.000 2.401 9999.000 9999.000 1.279 9999.000 67388 9999.00 9999.000 2.070 9999.000 9999.000 1.223 9999.000 67567 9999.00 9999.000 1.884 9999.000 9999.000 1.150 9999.000 67928 9999.00 9999.000 1.857 9999.000 9999.000 1.175 9999.000 68108 9999.00 9999.000 1.722 9999.000 9999.000 1.142 9999.000 68288 9999.00 9999.000 1.885 9999.000 9999.000 1.148 9999.000 68468 9999.00 9999.000 2.008 9999.000 9999.000 1.225 9999.000 68828 9999.00 9999.000 7.197 9999.000 9999.000 2.171 9999.000 69008 9999.00 9999.000 8.611 9999.000 9999.000 2.378 9999.000 69188 9999.00 9999.000 10.657 9999.000 9999.000 2.666 9999.000 69368 9999.00 9999.000 11.493 9999.000 9999.000 2.772 9999.000 69728 9999.00 9999.000 7.755 9999.000 9999.000 2.248 9999.000 69908 9999.00 9999.000 6.347 9999.000 9999.000 2.056 9999.000 70088 9999.00 9999.000 6.532 9999.000 9999.000 2.046 9999.000 70628 9999.00 9999.000 2.731 9999.000 9999.000 1.386 9999.000 70808 9999.00 9999.000 3.496 9999.000 9999.000 1.504 9999.000 70988 9999.00 9999.000 3.852 9999.000 9999.000 1.600 9999.000 71168 9999.00 9999.000 4.195 9999.000 9999.000 1.629 9999.000 71528 9999.00 9999.000 6.090 9999.000 9999.000 2.001 9999.000 71708 9999.00 9999.000 6.301 9999.000 9999.000 2.062 9999.000 71888 9999.00 9999.000 5.944 9999.000 9999.000 1.976 9999.000 72068 9999.00 9999.000 5.186 9999.000 9999.000 1.858 9999.000 72428 9999.00 9999.000 5.776 9999.000 9999.000 1.970 9999.000 72608 9999.00 9999.000 5.389 9999.000 9999.000 1.874 9999.000 72787 9999.00 9999.000 5.599 9999.000 9999.000 1.928 9999.000 72968 9999.00 9999.000 6.093 9999.000 9999.000 2.004 9999.000 73328 9999.00 9999.000 5.280 9999.000 9999.000 1.850 9999.000 73508 9999.00 9999.000 5.985 9999.000 9999.000 2.002 9999.000 73687 9999.00 9999.000 4.008 9999.000 9999.000 1.633 9999.000 73868 9999.00 9999.000 5.414 9999.000 9999.000 1.896 9999.000 74228 9999.00 9999.000 4.807 9999.000 9999.000 1.782 9999.000 74408 9999.00 9999.000 4.076 9999.000 9999.000 1.633 9999.000 74588 9999.00 9999.000 3.477 9999.000 9999.000 1.539 9999.000 74768 9999.00 9999.000 2.333 9999.000 9999.000 1.271 9999.000 75128 9999.00 9999.000 1.759 9999.000 9999.000 1.131 9999.000 75308 9999.00 9999.000 2.286 9999.000 9999.000 1.305 9999.000 75488 9999.00 9999.000 1.904 9999.000 9999.000 1.193 9999.000 76028 9999.00 9999.000 4.356 9999.000 9999.000 1.698 9999.000 76208 9999.00 9999.000 4.445 9999.000 9999.000 1.729 9999.000 76388 9999.00 9999.000 4.399 9999.000 9999.000 1.720 9999.000 76568 9999.00 9999.000 4.999 9999.000 9999.000 1.825 9999.000 76928 9999.00 9999.000 4.266 9999.000 9999.000 1.681 9999.000 77108 9999.00 9999.000 3.820 9999.000 9999.000 1.613 9999.000 77288 9999.00 9999.000 3.484 9999.000 9999.000 1.547 9999.000 77468 9999.00 9999.000 3.746 9999.000 9999.000 1.601 9999.000 77828 9999.00 9999.000 3.538 9999.000 9999.000 1.567 9999.000 78008 9999.00 9999.000 3.473 9999.000 9999.000 1.544 9999.000 78188 9999.00 9999.000 3.905 9999.000 9999.000 1.613 9999.000 78368 9999.00 9999.000 3.897 9999.000 9999.000 1.615 9999.000 78728 9999.00 9999.000 6.985 9999.000 9999.000 2.138 9999.000 78908 9999.00 9999.000 8.955 9999.000 9999.000 2.440 9999.000 79088 9999.00 9999.000 9.084 9999.000 9999.000 2.457 9999.000 79268 9999.00 9999.000 8.683 9999.000 9999.000 2.409 9999.000 79628 9999.00 9999.000 8.412 9999.000 9999.000 2.371 9999.000 79808 9999.00 9999.000 8.464 9999.000 9999.000 2.362 9999.000 79988 9999.00 9999.000 8.040 9999.000 9999.000 2.312 9999.000 80168 9999.00 9999.000 8.218 9999.000 9999.000 2.329 9999.000 80528 9999.00 9999.000 9.652 9999.000 9999.000 9999.000 9999.000 80708 9999.00 9999.000 13.405 9999.000 9999.000 9999.000 9999.000 80888 9999.00 9999.000 18.538 9999.000 9999.000 3.453 9999.000 81068 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 81427 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000