74 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 09 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) 52 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. 1 GMTs Age TotalBr CBry Bry TotalCl CCly Cly 68257 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68437 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68617 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68797 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69157 -0.30 18.855 15.537 3.318 3.542 9999.000 9999.000 69337 0.89 18.532 13.905 4.626 3.572 3.016 0.556 69517 0.55 18.627 15.097 3.530 3.566 3.211 0.354 69697 1.22 18.437 12.755 5.682 3.576 2.915 0.661 70057 1.41 18.382 11.952 6.431 3.577 9999.000 9999.000 70237 1.63 18.319 11.582 6.737 3.578 2.825 0.753 70417 1.73 18.287 10.738 7.549 3.578 2.688 0.890 70597 2.01 18.203 9.917 8.286 3.577 2.604 0.973 70957 1.72 18.291 10.743 7.548 3.578 9999.000 9999.000 71137 1.69 18.299 10.657 7.641 3.578 9999.000 9999.000 71317 1.67 18.305 10.752 7.553 3.578 9999.000 9999.000 71497 1.75 18.282 10.571 7.711 3.578 9999.000 9999.000 71857 1.84 18.256 10.456 7.799 3.578 9999.000 9999.000 72037 1.67 18.305 9.978 8.327 3.578 9999.000 9999.000 72217 2.15 18.163 9.509 8.653 3.577 9999.000 9999.000 72757 2.71 17.989 8.011 9.978 3.570 9999.000 9999.000 72937 2.65 18.007 7.964 10.043 3.571 9999.000 9999.000 73117 2.96 17.908 7.729 10.179 3.565 9999.000 9999.000 73297 2.55 18.036 8.163 9.874 3.572 9999.000 9999.000 73657 2.68 17.996 7.800 10.196 3.570 9999.000 9999.000 73837 2.91 17.924 8.291 9.634 3.566 9999.000 9999.000 74017 2.59 18.026 7.972 10.054 3.572 9999.000 9999.000 74557 2.56 18.036 7.767 10.269 3.572 9999.000 9999.000 74737 2.63 18.013 8.000 10.013 3.571 9999.000 9999.000 74917 2.46 18.067 8.623 9.445 3.573 9999.000 9999.000 75097 2.47 18.063 8.451 9.611 3.573 9999.000 9999.000 75457 2.82 17.953 7.346 10.607 3.568 9999.000 9999.000 75817 2.75 17.974 7.562 10.412 3.569 9999.000 9999.000 75997 2.96 17.908 7.589 10.319 3.565 9999.000 9999.000 76357 2.31 18.113 8.829 9.284 3.575 9999.000 9999.000 76537 2.65 18.005 7.857 10.147 3.571 9999.000 9999.000 76717 2.56 18.036 7.637 10.399 3.572 9999.000 9999.000 76897 2.80 17.958 7.524 10.433 3.568 9999.000 9999.000 77257 2.88 17.935 7.304 10.631 3.566 9999.000 9999.000 77437 3.22 17.825 7.264 10.562 3.559 9999.000 9999.000 77617 2.59 18.025 8.077 9.949 3.572 9999.000 9999.000 77797 2.56 18.036 8.572 9.465 3.572 9999.000 9999.000 78157 2.31 18.113 8.824 9.289 3.575 9999.000 9999.000 78337 1.91 18.233 10.283 7.950 3.578 9999.000 9999.000 78517 1.77 18.276 11.454 6.822 3.578 9999.000 9999.000 79057 2.11 18.173 9.426 8.747 3.577 9999.000 9999.000 79237 2.51 18.052 9.000 9.052 3.573 9999.000 9999.000 79417 1.81 18.263 10.383 7.880 3.578 9999.000 9999.000 79597 1.77 18.276 10.974 7.302 3.578 9999.000 9999.000 79957 1.82 18.262 11.057 7.205 3.578 9999.000 9999.000 80137 1.68 18.302 10.762 7.541 3.578 9999.000 9999.000 80317 1.91 18.233 10.746 7.486 3.578 9999.000 9999.000 80497 1.73 18.288 10.992 7.297 3.578 9999.000 9999.000 80857 1.63 18.317 10.820 7.497 3.578 9999.000 9999.000 81037 1.11 18.471 12.238 6.232 3.575 9999.000 9999.000 81217 1.43 18.378 11.967 6.410 3.577 9999.000 9999.000 81397 -0.12 18.809 18.955 -0.146 3.548 3.494 0.054 81757 -0.21 18.832 19.455 -0.623 3.545 3.473 0.071 81937 0.50 18.642 15.640 3.002 3.565 9999.000 9999.000 82117 1.20 18.444 13.299 5.144 3.576 9999.000 9999.000 82297 1.29 18.418 12.423 5.994 3.576 9999.000 9999.000 82657 1.90 18.236 9999.000 9999.000 3.578 9999.000 9999.000 82837 2.41 18.083 8.000 10.083 3.574 9999.000 9999.000 83017 2.83 17.950 7.354 10.596 3.567 9999.000 9999.000 83197 2.46 18.067 7.617 10.450 3.573 9999.000 9999.000 83557 3.32 17.792 9999.000 9999.000 3.556 9999.000 9999.000 83737 3.08 17.869 6.736 11.133 3.562 9999.000 9999.000 83917 2.86 17.941 6.715 11.225 3.567 9999.000 9999.000 84457 3.05 17.880 6.736 11.145 3.563 9999.000 9999.000 84637 2.86 17.941 6.770 11.171 3.567 9999.000 9999.000 84817 3.11 17.861 6.693 11.168 3.561 9999.000 9999.000 84997 2.86 17.941 6.481 11.460 3.567 9999.000 9999.000 85357 3.42 17.757 6.171 11.587 3.553 9999.000 9999.000 85537 3.30 17.800 5.913 11.887 3.556 9999.000 9999.000 85717 2.86 17.941 5.826 12.114 3.567 9999.000 9999.000 85897 3.09 17.867 6.660 11.207 3.562 9999.000 9999.000 86257 2.74 17.977 7.654 10.323 3.569 9999.000 9999.000 86437 2.36 18.098 8.419 9.679 3.575 9999.000 9999.000 86617 0.71 18.584 15.101 3.483 3.569 9999.000 9999.000 86797 0.01 18.773 19.431 -0.658 3.552 3.509 0.043 87157 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 87337 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 87517 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 87697 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000