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 04 26 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 58873 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 58998 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59373 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59498 2.19 18.576 11.894 6.682 3.569 2.683 0.886 59623 2.20 18.573 11.734 6.839 3.569 2.681 0.889 59748 2.27 18.554 11.405 7.150 3.571 2.668 0.902 59998 2.85 18.389 8.666 9.723 3.577 2.261 1.316 60123 2.51 18.487 8.596 9.891 3.574 2.251 1.323 60248 4.01 18.039 4.569 13.470 3.572 1.615 1.957 60373 3.12 18.308 7.169 11.139 3.578 2.047 1.531 60623 2.51 18.487 8.999 9.487 3.574 2.354 1.220 60748 2.79 18.406 8.786 9.620 3.577 2.325 1.252 60873 2.70 18.433 8.536 9.897 3.576 2.293 1.283 60998 3.08 18.321 7.543 10.777 3.578 2.149 1.429 61248 3.67 18.143 5.483 12.659 3.576 1.820 1.756 61373 4.06 18.024 4.725 13.299 3.571 1.676 1.895 61498 3.71 18.131 5.345 12.786 3.576 1.795 1.781 61873 4.93 17.744 2.359 15.385 3.552 1.199 2.352 61998 4.96 17.731 2.223 15.508 3.550 1.147 2.404 62123 5.03 17.709 2.372 15.337 3.548 1.180 2.368 62248 4.78 17.792 2.598 15.193 3.556 1.242 2.314 62498 4.57 17.860 3.028 14.833 3.561 1.359 2.202 62623 4.77 17.795 2.760 15.035 3.556 1.273 2.283 62748 5.08 17.694 1.968 15.726 3.547 1.093 2.454 63123 5.95 17.398 1.343 16.055 3.511 0.926 2.585 63248 5.35 17.603 1.550 16.053 3.537 0.967 2.570 63373 5.24 17.639 2.463 15.176 3.541 1.229 2.312 63498 4.26 17.958 3.771 14.188 3.568 1.517 2.051 63748 4.36 17.927 3.512 14.415 3.566 1.467 2.099 63998 4.18 17.984 3.958 14.026 3.569 1.561 2.009 64123 4.82 17.778 3.604 14.174 3.555 1.439 2.116 64373 4.56 17.862 4.176 13.686 3.561 1.629 1.933 64498 4.06 18.023 4.254 13.770 3.571 1.641 1.930 64623 4.21 17.976 4.031 13.945 3.569 1.573 1.996 64748 4.01 18.038 4.384 13.654 3.572 1.651 1.921 64998 4.47 17.892 3.212 14.679 3.564 1.418 2.146 65123 4.36 17.928 3.620 14.308 3.566 1.493 2.073 65248 4.19 17.982 3.935 14.047 3.569 1.564 2.005 65373 4.31 17.944 4.218 13.726 3.567 1.617 1.950 65623 4.31 17.944 4.580 13.365 3.567 1.691 1.876 65748 3.96 18.052 4.521 13.531 3.573 1.685 1.888 65873 4.26 17.960 4.432 13.528 3.568 1.671 1.897 66248 4.28 17.954 3.734 14.220 3.568 1.524 2.043 66373 4.77 17.795 3.695 14.100 3.556 1.520 2.036 66498 4.71 17.814 2.724 15.090 3.558 1.324 2.234 66623 2.89 18.378 8.002 10.376 3.577 2.291 1.286 66873 3.32 18.250 7.786 10.464 3.578 2.270 1.308 66998 2.76 18.415 8.623 9.792 3.576 2.382 1.194 67123 3.03 18.336 8.735 9.601 3.578 2.411 1.167 67248 3.64 18.151 5.488 12.663 3.576 1.867 1.709 67498 3.66 18.146 5.408 12.737 3.576 1.855 1.721 67623 4.01 18.039 5.633 12.406 3.572 1.899 1.673 67748 3.95 18.058 4.564 13.494 3.573 1.708 1.865 67873 4.36 17.928 4.961 12.967 3.566 1.778 1.788 68123 3.76 18.117 5.819 12.297 3.575 1.908 1.667 68248 4.24 17.966 3.834 14.132 3.568 1.553 2.015 68373 4.67 17.829 3.644 14.184 3.559 1.509 2.050 68498 4.42 17.909 3.332 14.577 3.565 1.468 2.096 68748 4.45 17.899 3.289 14.610 3.564 1.446 2.118 68873 5.57 17.530 1.628 15.902 3.528 0.973 2.555 68998 5.64 17.503 1.030 16.473 3.525 0.784 2.741 69123 5.95 17.398 1.034 16.364 3.511 0.829 2.682 69373 5.62 17.511 1.091 16.421 3.526 0.860 2.666 69498 5.61 17.515 1.073 16.442 3.527 0.839 2.687 69623 5.78 17.455 1.042 16.414 3.519 0.827 2.692 69998 5.76 17.465 0.848 16.617 3.520 0.740 2.780 70123 5.89 17.417 0.798 16.619 3.514 0.703 2.811 70248 5.85 17.431 0.739 16.692 3.516 0.669 2.847 70373 5.62 17.511 0.692 16.819 3.526 0.635 2.891 70623 5.62 17.511 0.500 17.011 3.526 0.517 3.009 70748 5.91 17.410 0.648 16.763 3.513 0.628 2.885 70873 6.06 17.359 0.663 16.697 3.506 0.628 2.877 70998 5.93 17.404 0.649 16.755 3.512 0.614 2.898 71248 6.06 17.360 0.482 16.878 3.506 0.515 2.991 71373 6.28 17.281 0.441 16.840 3.494 0.478 3.016 71498 6.07 17.354 0.467 16.887 3.505 0.510 2.995 71623 6.23 17.301 0.467 16.834 3.497 0.486 3.011 71873 6.00 17.379 0.581 16.798 3.508 0.553 2.956 71998 6.02 17.373 0.564 16.808 3.507 0.554 2.954 72123 5.73 17.474 1.035 16.439 3.521 0.788 2.733 72248 5.36 17.601 1.510 16.090 3.537 0.931 2.605 72498 3.67 18.143 5.578 12.565 3.576 1.811 1.765 72623 4.31 17.944 5.313 12.631 3.567 1.719 1.848 72748 2.79 18.407 8.998 9.409 3.577 2.311 1.266 72873 2.14 18.591 11.648 6.943 3.568 2.664 0.904 73123 4.46 17.895 5.421 12.474 3.564 1.739 1.825 73248 3.67 18.144 5.568 12.576 3.576 1.816 1.760 73373 4.61 17.846 4.591 13.255 3.560 1.627 1.934 73748 5.35 17.604 1.556 16.048 3.537 0.958 2.579 73873 5.35 17.603 1.316 16.287 3.537 0.906 2.631 73998 5.90 17.416 0.695 16.721 3.514 0.641 2.873 74123 5.78 17.455 0.811 16.644 3.519 0.708 2.811 74373 5.62 17.511 0.694 16.817 3.526 0.643 2.883 74498 5.95 17.396 0.588 16.809 3.511 0.604 2.907 74623 5.51 17.548 0.564 16.984 3.531 0.588 2.943 74748 5.95 17.398 0.622 16.776 3.511 0.613 2.898 74998 5.89 17.420 0.677 16.743 3.514 0.660 2.854 75123 5.19 17.656 0.760 16.896 3.543 0.717 2.826 75248 5.75 17.467 0.846 16.621 3.520 0.757 2.764 75373 4.93 17.744 0.886 16.858 3.552 0.782 2.770 75623 3.22 18.279 5.498 12.781 3.578 1.895 1.683 75748 4.21 17.976 3.885 14.092 3.569 1.574 1.995 75873 3.08 18.322 6.029 12.293 3.578 1.974 1.604 75998 3.11 18.311 7.238 11.073 3.578 2.181 1.397 76248 3.72 18.129 5.195 12.934 3.576 1.842 1.734 76373 3.27 18.265 5.573 12.692 3.578 1.910 1.668 76498 3.42 18.220 6.159 12.061 3.578 2.002 1.576 76623 2.84 18.392 7.112 11.280 3.577 2.174 1.403 76873 3.08 18.322 6.164 12.158 3.578 2.025 1.553 76998 2.75 18.416 8.545 9.871 3.576 2.410 1.167 77123 2.46 18.500 8.347 10.153 3.573 2.404 1.169 77498 2.99 18.348 7.690 10.658 3.578 2.250 1.327 77623 2.65 18.447 7.657 10.789 3.575 2.259 1.316 77748 3.82 18.096 4.983 13.113 3.574 1.767 1.808 77873 3.17 18.294 6.501 11.792 3.578 2.048 1.530 78123 3.56 18.177 5.148 13.029 3.577 1.802 1.775 78248 4.24 17.966 3.804 14.162 3.568 1.556 2.012 78373 3.81 18.101 3.856 14.246 3.575 1.587 1.988 78498 4.16 17.991 3.997 13.993 3.570 1.605 1.965 78748 4.22 17.972 3.828 14.144 3.569 1.577 1.992 78873 4.01 18.039 3.879 14.160 3.572 1.583 1.989 78998 4.25 17.963 3.752 14.211 3.568 1.564 2.004 79123 4.06 18.024 3.625 14.399 3.571 1.542 2.030 79373 4.11 18.008 3.145 14.863 3.571 1.446 2.124 79498 4.50 17.881 3.096 14.785 3.563 1.446 2.116 79623 4.26 17.960 3.281 14.679 3.568 1.485 2.083 79748 4.47 17.891 3.178 14.713 3.564 1.453 2.111 79998 4.55 17.867 3.029 14.838 3.562 1.409 2.153 80123 4.31 17.944 3.111 14.833 3.567 1.418 2.149 80248 4.30 17.946 3.598 14.348 3.567 1.538 2.029 80373 4.11 18.008 3.469 14.539 3.571 1.511 2.059 80623 4.56 17.862 2.890 14.972 3.561 1.361 2.200 80748 4.60 17.851 2.880 14.970 3.561 1.381 2.180 80873 4.56 17.862 2.844 15.019 3.561 1.367 2.194 81248 4.36 17.929 3.491 14.438 3.566 1.503 2.063 81373 4.61 17.846 1.871 15.975 3.560 1.111 2.449 81498 4.93 17.744 2.240 15.504 3.552 1.225 2.327 81623 4.21 17.976 2.457 15.520 3.569 1.296 2.273 81873 4.26 17.960 2.437 15.523 3.568 1.274 2.294 81998 4.67 17.829 2.751 15.078 3.559 1.363 2.196 82123 4.06 18.024 3.021 15.003 3.571 1.444 2.128 82248 4.40 17.916 3.369 14.547 3.565 1.507 2.059 82498 3.85 18.087 4.761 13.326 3.574 1.776 1.799 82623 3.71 18.132 5.073 13.059 3.576 1.818 1.757 82748 3.76 18.115 5.063 13.053 3.575 1.822 1.753 82873 3.96 18.055 5.165 12.890 3.573 1.838 1.735 83123 3.96 18.055 5.244 12.811 3.573 1.853 1.719 83248 3.68 18.140 5.269 12.871 3.576 1.858 1.718 83373 3.61 18.162 5.443 12.719 3.576 1.877 1.699 83498 3.84 18.091 4.819 13.272 3.574 1.778 1.796 83748 3.92 18.065 4.600 13.465 3.573 1.735 1.838 83873 3.56 18.177 4.605 13.572 3.577 1.731 1.846 83998 3.86 18.084 4.762 13.322 3.574 1.766 1.808 84123 3.76 18.117 4.800 13.316 3.575 1.763 1.812 84373 3.71 18.132 5.194 12.937 3.576 1.848 1.727 84498 3.81 18.099 4.942 13.157 3.575 1.791 1.784 84623 3.81 18.101 4.787 13.315 3.575 1.762 1.813 84998 3.64 18.151 5.478 12.673 3.576 1.878 1.698 85123 3.51 18.192 5.744 12.448 3.577 1.904 1.673 85248 2.95 18.360 8.126 10.234 3.577 2.245 1.333 85373 3.03 18.336 8.379 9.957 3.578 2.257 1.321 85623 1.87 18.667 14.134 4.532 3.563 2.977 0.585 85748 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 85873 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 85998 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000