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 1996 12 18 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 59245 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59425 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59605 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59785 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60145 0.30 18.985 17.940 1.045 3.521 3.318 0.203 60325 1.00 18.804 15.103 3.700 3.548 3.089 0.460 60505 0.69 18.885 15.978 2.907 3.538 3.171 0.366 60685 1.60 18.644 12.807 5.837 3.564 2.845 0.720 61045 1.22 18.746 14.188 4.558 3.555 3.001 0.554 61225 0.82 18.851 14.851 4.000 3.542 3.081 0.461 61405 1.55 18.656 12.942 5.713 3.563 2.864 0.700 61585 1.86 18.571 12.450 6.121 3.570 2.826 0.743 61945 2.80 18.300 9.591 8.708 3.578 2.459 1.119 62125 2.51 18.385 9.561 8.824 3.577 2.450 1.127 62305 1.45 18.684 13.823 4.861 3.561 2.992 0.569 62485 2.31 18.442 10.197 8.245 3.576 2.538 1.038 62845 2.34 18.433 10.083 8.350 3.576 2.530 1.046 63025 2.46 18.398 10.187 8.211 3.577 2.556 1.021 63205 2.21 18.471 10.544 7.926 3.575 2.596 0.979 63745 2.23 18.466 11.340 7.125 3.575 2.710 0.865 63925 2.03 18.522 11.158 7.364 3.572 2.680 0.892 64105 2.09 18.506 10.818 7.687 3.573 2.644 0.929 64285 2.13 18.494 10.808 7.686 3.574 2.635 0.939 64645 2.31 18.444 10.136 8.307 3.576 2.553 1.022 64825 2.37 18.425 9.968 8.458 3.576 2.541 1.035 65005 2.52 18.381 9.407 8.973 3.577 2.453 1.124 65545 2.70 18.328 9.409 8.919 3.578 2.443 1.135 65725 2.57 18.368 9.205 9.163 3.577 2.431 1.146 65905 2.75 18.314 9.237 9.077 3.578 2.436 1.142 66085 2.68 18.334 8.873 9.461 3.578 2.369 1.209 66445 2.70 18.329 8.739 9.590 3.578 2.355 1.223 66805 2.84 18.288 8.251 10.038 3.578 2.291 1.287 66985 2.94 18.257 9.376 8.881 3.578 2.451 1.127 67345 3.28 18.153 8.475 9.678 3.576 2.316 1.260 67525 2.74 18.316 8.565 9.751 3.578 2.334 1.243 67705 3.58 18.062 8.088 9.973 3.573 2.250 1.323 67885 2.94 18.258 7.847 10.410 3.578 2.225 1.352 68245 2.97 18.248 7.741 10.507 3.578 2.217 1.361 68425 2.99 18.242 9.800 8.442 3.578 2.514 1.064 68605 2.87 18.278 8.093 10.186 3.578 2.273 1.305 68785 3.48 18.093 8.206 9.886 3.574 2.290 1.284 69145 2.56 18.370 9.721 8.649 3.577 2.519 1.058 69325 2.36 18.427 9.806 8.622 3.576 2.530 1.046 69505 2.85 18.285 9.375 8.910 3.578 2.469 1.109 70045 2.73 18.320 8.560 9.759 3.578 2.352 1.226 70225 2.46 18.398 8.153 10.245 3.577 2.296 1.280 70405 2.83 18.291 8.214 10.077 3.578 2.297 1.281 70585 2.51 18.384 7.991 10.393 3.577 2.277 1.300 70945 2.23 18.466 7.785 10.681 3.575 2.240 1.335 71125 3.05 18.224 7.376 10.848 3.578 2.174 1.404 71305 2.32 18.439 6.774 11.665 3.576 2.090 1.486 71485 3.16 18.190 6.956 11.234 3.577 2.109 1.469 71845 2.83 18.289 8.082 10.207 3.578 2.307 1.271 72025 2.70 18.328 6.519 11.810 3.578 2.050 1.528 72205 3.27 18.156 6.458 11.698 3.576 2.046 1.531 72385 2.99 18.242 5.997 12.245 3.578 1.960 1.618 72745 2.85 18.285 6.357 11.928 3.578 2.023 1.555 72925 3.34 18.137 6.209 11.928 3.576 2.006 1.570 73105 2.89 18.271 6.357 11.914 3.578 2.016 1.562 73285 3.55 18.070 5.289 12.781 3.574 1.843 1.730 73645 3.39 18.120 6.108 12.012 3.575 1.959 1.616 73825 1.95 18.545 9999.000 9999.000 3.571 2.737 0.834 74005 0.93 18.823 15.394 3.429 3.546 3.136 0.410 74185 0.65 18.897 16.777 2.119 3.536 3.261 0.275 74545 3.23 18.168 7.126 11.043 3.577 2.107 1.470 74725 2.71 18.326 8.755 9.571 3.578 2.364 1.214 74905 1.67 18.622 11.368 7.254 3.566 2.740 0.826 75445 2.90 18.269 7.975 10.293 3.578 2.268 1.310 75625 2.61 18.356 7.643 10.713 3.578 2.228 1.350 75805 3.19 18.181 6.904 11.277 3.577 2.095 1.482 75985 3.48 18.093 5.093 12.999 3.574 1.795 1.779 76345 3.48 18.093 5.206 12.886 3.574 1.813 1.761 76525 3.51 18.083 5.527 12.555 3.574 1.883 1.691 76705 3.09 18.213 5.951 12.261 3.577 1.951 1.627 76885 3.34 18.137 6.284 11.853 3.576 2.008 1.568 77245 3.15 18.193 6.993 11.200 3.577 2.125 1.452 77425 2.75 18.314 7.732 10.582 3.578 2.246 1.332 77605 2.93 18.259 7.789 10.470 3.578 2.257 1.321 77785 2.85 18.285 7.895 10.390 3.578 2.290 1.288 78145 3.14 18.198 6.964 11.234 3.577 2.132 1.445 78325 3.17 18.188 6.870 11.319 3.577 2.118 1.459 78505 3.58 18.062 6.422 11.639 3.573 2.047 1.526 78685 3.41 18.116 5.931 12.184 3.575 1.962 1.613 79045 3.43 18.107 5.834 12.273 3.575 1.940 1.635 79225 3.78 17.999 5.482 12.517 3.570 1.877 1.693 79405 3.30 18.150 6.350 11.800 3.576 2.042 1.534 79585 3.53 18.077 5.764 12.313 3.574 1.945 1.629 79945 3.93 17.951 5.127 12.824 3.567 1.820 1.747 80125 3.48 18.093 5.623 12.470 3.574 1.916 1.658 80305 3.53 18.077 5.774 12.303 3.574 1.937 1.637 80845 3.40 18.117 5.957 12.160 3.575 1.971 1.604 81025 3.14 18.198 6.381 11.817 3.577 2.045 1.532 81205 3.21 18.176 6.711 11.465 3.577 2.096 1.480 81385 3.33 18.138 6.795 11.343 3.576 2.111 1.465 81745 3.04 18.228 6.765 11.462 3.578 2.111 1.466 81925 3.20 18.180 6.718 11.461 3.577 2.103 1.474 82105 3.04 18.228 6.624 11.604 3.578 2.093 1.485 82285 3.28 18.155 6.413 11.743 3.576 2.052 1.525 82645 3.12 18.203 7.052 11.151 3.577 2.153 1.424 82825 2.94 18.257 7.200 11.056 3.578 2.179 1.399 83005 3.08 18.214 7.191 11.023 3.577 2.170 1.407 83185 3.28 18.153 6.142 12.012 3.576 2.003 1.573 83545 3.14 18.198 6.187 12.011 3.577 2.009 1.569 83725 3.29 18.150 6.350 11.800 3.576 2.048 1.528 83905 3.53 18.077 6.100 11.977 3.574 2.008 1.566 84085 3.38 18.124 6.009 12.115 3.575 1.994 1.581 84445 3.62 18.049 4.980 13.069 3.573 1.814 1.758 84625 3.78 17.999 4.984 13.015 3.570 1.821 1.749 84805 3.75 18.009 4.317 13.692 3.571 1.701 1.870 84985 3.93 17.951 3.833 14.118 3.567 1.610 1.957 85345 4.03 17.919 3.926 13.993 3.565 1.621 1.945 85525 3.83 17.984 3.890 14.094 3.569 1.620 1.949 85705 3.09 18.213 7.061 11.152 3.577 2.139 1.439 85885 1.24 18.740 14.118 4.622 3.556 3.018 0.537 86245 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 86425 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 86605 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 86785 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000