54 1001 ELKINS, JAMES; WAMSLEY, PAULA; HURST, DALE; ROMASHKIN, PAVEL; DUTTON, GEOFF U.S. DEPT OF COMMERCE, NOAA / CMDL / NITROUS OXIDE AND HALOCOMPOUNDS DIVISION ACATS POLARIS 1 1 1997 09 23 1998 09 09 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) 32 Total chlorine and bromine are based on in situ measurements of organic species from ACATS-IV [see Elkins et al., 1996]. Mean age of the air in years from tropopause is calculated using tropospheric trends from Geller et al., [1997] and formula from Volk et al., [1997]. Total chlorine calculations based on total chlorine from Montzka et al.,[1996] and formula from Woodbridge et al. [1995] for missing chlorine species, HCFC-22 and CH3Cl. Total bromine calculations are from Wamsley et al., [1997]. All values derived from theta < 380 were excluded. 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, et al., 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, et al., 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, et al., 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 65220 9999.00 9999.000 18.301 9999.000 9999.000 9999.000 9999.000 65345 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65470 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65845 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65970 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66095 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66220 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66470 0.21 19.196 17.940 1.256 3.476 3.343 0.133 66595 -0.19 19.288 17.759 1.529 3.451 3.359 0.093 66720 0.41 19.148 17.155 1.993 3.488 3.269 0.219 66845 0.60 19.102 16.240 2.862 3.498 3.222 0.277 67095 0.60 19.102 15.041 4.061 3.498 3.102 0.396 67220 1.07 18.985 14.799 4.187 3.521 3.050 0.471 67345 0.68 19.081 14.445 4.636 3.503 3.053 0.450 67470 1.15 18.964 14.474 4.489 3.525 3.020 0.505 67720 1.35 18.914 13.802 5.112 3.533 2.960 0.573 67845 1.59 18.852 13.584 5.268 3.542 2.972 0.570 67970 1.53 18.865 13.203 5.663 3.540 2.900 0.640 68345 1.72 18.817 13.042 5.775 3.547 2.909 0.638 68470 1.58 18.854 13.019 5.835 3.542 2.891 0.651 68595 2.03 18.734 12.976 5.758 3.556 2.897 0.659 68720 1.59 18.850 13.057 5.793 3.542 2.877 0.665 68970 1.71 18.819 12.674 6.145 3.546 2.840 0.706 69095 1.67 18.829 12.755 6.074 3.545 2.881 0.665 69220 1.64 18.839 12.855 5.984 3.544 2.860 0.684 69595 1.94 18.758 12.407 6.351 3.554 2.818 0.735 69720 1.88 18.773 12.212 6.561 3.552 2.743 0.809 69845 1.90 18.770 12.113 6.657 3.552 2.760 0.793 69970 1.72 18.817 12.581 6.235 3.547 2.814 0.733 70220 1.75 18.810 12.570 6.239 3.548 2.827 0.720 70470 1.83 18.788 12.379 6.409 3.550 2.793 0.757 70595 1.90 18.770 12.259 6.511 3.552 2.814 0.739 70845 1.90 18.770 11.942 6.828 3.552 2.769 0.783 70970 1.95 18.756 12.053 6.704 3.554 2.754 0.800 71095 1.76 18.805 11.742 7.064 3.548 2.746 0.802 71220 1.99 18.745 11.868 6.877 3.555 2.738 0.817 71470 2.03 18.733 11.744 6.989 3.556 2.723 0.834 71595 2.35 18.648 11.680 6.968 3.564 2.734 0.831 71720 2.04 18.731 11.713 7.018 3.557 2.726 0.831 71845 1.67 18.829 11.684 7.144 3.545 2.751 0.795 72095 1.98 18.746 11.874 6.872 3.555 2.794 0.761 72220 1.97 18.751 11.919 6.832 3.554 2.753 0.801 72345 1.76 18.805 11.902 6.904 3.548 2.779 0.769 72720 1.80 18.796 12.387 6.410 3.549 2.815 0.734 72845 1.24 18.942 12.531 6.411 3.529 2.863 0.666 72970 1.71 18.820 12.622 6.198 3.546 2.841 0.705 73095 1.50 18.875 12.774 6.101 3.539 2.906 0.633 73345 1.50 18.875 13.009 5.866 3.539 2.943 0.596 73470 1.54 18.862 12.999 5.864 3.541 2.897 0.644 73595 1.50 18.875 12.881 5.994 3.539 2.938 0.601 73720 1.84 18.786 12.066 6.719 3.551 2.817 0.734 73970 1.89 18.771 11.920 6.850 3.552 2.797 0.755 74095 1.76 18.805 11.715 7.090 3.548 2.828 0.721 74220 1.92 18.764 11.879 6.886 3.553 2.792 0.761 74345 1.81 18.794 11.876 6.918 3.550 2.841 0.709 74595 2.16 18.697 11.883 6.814 3.560 2.848 0.712 74720 1.87 18.777 12.052 6.725 3.552 2.808 0.744 74845 1.76 18.805 12.084 6.721 3.548 2.853 0.695 74970 1.82 18.791 12.211 6.580 3.550 2.825 0.725 75220 1.86 18.779 12.037 6.742 3.551 2.813 0.739 75345 1.94 18.758 12.106 6.652 3.554 2.860 0.694 75470 1.83 18.787 12.114 6.673 3.550 2.815 0.736 75595 1.76 18.805 12.129 6.676 3.548 2.861 0.687 75845 2.12 18.710 12.124 6.586 3.559 2.871 0.687 75970 1.75 18.809 12.333 6.476 3.548 2.846 0.702 76095 1.59 18.852 12.229 6.623 3.542 2.875 0.667 76470 1.79 18.799 12.269 6.530 3.549 2.840 0.709 76595 1.63 18.840 12.104 6.736 3.544 2.869 0.675 76720 1.83 18.787 12.104 6.683 3.550 2.810 0.741 76845 1.81 18.794 12.124 6.670 3.550 2.865 0.685 77095 2.03 18.734 11.982 6.752 3.556 2.851 0.706 77220 1.82 18.791 12.131 6.660 3.550 2.821 0.729 77345 1.90 18.770 12.096 6.673 3.552 2.858 0.694 77470 1.80 18.796 12.187 6.610 3.549 2.828 0.722 77720 1.80 18.795 12.149 6.646 3.549 2.832 0.717 77845 2.07 18.722 12.034 6.688 3.557 2.862 0.696 77970 1.82 18.791 12.111 6.680 3.550 2.821 0.729 78095 1.98 18.746 11.915 6.831 3.555 2.851 0.704 78345 2.30 18.660 12.269 6.391 3.563 2.865 0.698 78470 1.80 18.796 12.197 6.600 3.549 2.829 0.720 78595 2.03 18.734 12.295 6.439 3.556 2.879 0.677 78720 1.77 18.804 12.285 6.520 3.548 2.837 0.711 78970 1.82 18.790 12.114 6.676 3.550 2.819 0.731 79095 2.16 18.697 12.076 6.621 3.560 2.864 0.696 79220 1.81 18.793 12.146 6.646 3.550 2.824 0.726 79345 1.59 18.852 12.287 6.564 3.542 2.878 0.664 79595 2.12 18.710 12.146 6.563 3.559 2.870 0.688 79720 1.65 18.836 12.672 6.164 3.544 2.885 0.659 79845 1.45 18.886 14.038 4.848 3.537 3.046 0.491 80220 0.50 19.125 16.937 2.189 3.493 3.253 0.241 80345 0.47 19.132 17.706 1.427 3.492 3.359 0.133 80470 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 80595 0.30 19.172 18.007 1.165 3.482 3.378 0.104 80845 0.18 19.202 16.719 2.483 3.475 3.269 0.206 80970 0.69 19.079 16.087 2.991 3.503 3.194 0.309 81095 0.94 19.018 15.947 3.071 3.515 3.218 0.297 81220 0.88 19.033 15.203 3.830 3.513 3.119 0.394 81470 1.29 18.929 13.766 5.163 3.531 3.005 0.526 81595 1.59 18.852 13.362 5.490 3.542 2.995 0.548 81720 1.61 18.847 12.716 6.131 3.543 2.891 0.652 81845 1.85 18.782 12.419 6.363 3.551 2.893 0.658 82095 1.81 18.794 11.957 6.837 3.550 2.853 0.697 82220 2.05 18.729 11.409 7.320 3.557 2.765 0.791 82345 2.35 18.648 11.413 7.235 3.564 2.795 0.769 82470 2.13 18.706 11.174 7.531 3.559 2.732 0.827 82720 2.12 18.709 11.153 7.557 3.559 2.730 0.828 82845 2.16 18.697 11.299 7.398 3.560 2.781 0.778 82970 2.13 18.707 11.198 7.509 3.559 2.728 0.831 83095 1.98 18.746 11.095 7.651 3.555 2.768 0.787 83345 2.53 18.597 11.076 7.521 3.568 2.762 0.805 83470 2.18 18.692 11.079 7.613 3.560 2.716 0.844 83595 2.35 18.648 10.972 7.676 3.564 2.751 0.813 83970 2.15 18.702 11.216 7.486 3.559 2.724 0.836 84095 2.12 18.710 11.224 7.485 3.559 2.773 0.786 84220 2.10 18.715 11.315 7.400 3.558 2.736 0.822 84345 1.98 18.746 11.288 7.458 3.555 2.772 0.783 84595 1.98 18.746 11.173 7.573 3.555 2.766 0.789 84720 2.15 18.700 11.162 7.538 3.560 2.715 0.844 84845 2.12 18.710 10.950 7.760 3.559 2.747 0.811 84970 2.24 18.677 10.902 7.775 3.562 2.696 0.866 85220 2.43 18.626 10.325 8.300 3.566 2.643 0.923 85345 2.03 18.734 10.496 8.238 3.556 2.710 0.847 85470 2.40 18.632 10.432 8.200 3.565 2.652 0.914 85595 2.07 18.722 10.382 8.340 3.557 2.695 0.862 85845 2.21 18.685 10.593 8.093 3.561 2.702 0.859 85970 2.31 18.656 10.714 7.942 3.563 2.672 0.892 86095 2.03 18.734 10.643 8.091 3.556 2.702 0.854 86220 2.31 18.658 10.728 7.930 3.563 2.670 0.894 86470 2.34 18.649 10.660 7.989 3.564 2.662 0.902 86595 2.35 18.648 10.735 7.913 3.564 2.715 0.849 86720 2.21 18.685 11.044 7.641 3.561 2.707 0.854 86845 2.35 18.648 10.616 8.032 3.564 2.701 0.864 87095 2.21 18.685 10.526 8.159 3.561 2.689 0.872 87220 2.47 18.613 10.332 8.281 3.567 2.621 0.945 87345 2.35 18.648 10.293 8.355 3.564 2.641 0.923 87720 2.46 18.615 10.366 8.249 3.567 2.612 0.955 87845 2.53 18.597 9.965 8.633 3.568 2.598 0.970 87970 2.54 18.593 10.198 8.396 3.568 2.583 0.985 88095 2.44 18.623 10.207 8.416 3.566 2.622 0.944 88345 2.30 18.660 10.036 8.624 3.563 2.610 0.953 88470 2.67 18.558 9.845 8.713 3.570 2.550 1.020 88595 2.39 18.635 10.244 8.392 3.565 2.631 0.934 88720 2.50 18.605 10.233 8.372 3.567 2.609 0.958 88970 2.49 18.607 10.296 8.311 3.567 2.606 0.961 89095 2.30 18.660 9.946 8.714 3.563 2.591 0.972 89220 2.61 18.574 9.991 8.583 3.569 2.572 0.997 89345 2.57 18.585 9.952 8.632 3.569 2.595 0.973 89595 2.62 18.572 9.857 8.714 3.570 2.596 0.974 89720 2.60 18.577 10.001 8.576 3.569 2.573 0.996 89845 2.90 18.493 9.753 8.740 3.574 2.588 0.986 89970 2.59 18.580 10.000 8.580 3.569 2.583 0.986 90220 2.57 18.586 10.066 8.521 3.569 2.591 0.978 90345 2.53 18.597 9.837 8.760 3.568 2.599 0.969 90470 2.59 18.579 9.964 8.615 3.569 2.582 0.987 90595 2.25 18.673 9.951 8.722 3.562 2.606 0.956 90845 2.67 18.559 10.060 8.499 3.570 2.612 0.958 90970 2.47 18.613 10.322 8.291 3.567 2.613 0.954 91095 2.25 18.673 11.363 7.310 3.562 2.728 0.834 91470 0.95 19.015 15.293 3.722 3.516 3.082 0.434 91595 -0.03 19.250 17.309 1.941 3.462 3.320 0.142 91720 0.20 19.196 18.092 1.105 3.476 3.354 0.122 91845 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92095 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92220 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92345 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000