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 ASHOE/MAESA 1 1 1994 10 26 1998 08 07 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 68995 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69175 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69355 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69535 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69895 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70075 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70255 0.19 18.171 18.004 0.167 3.577 3.498 0.079 70435 0.39 18.110 16.651 1.460 3.575 3.383 0.192 70795 0.86 17.962 14.313 3.649 3.568 9999.000 9999.000 70975 0.07 18.207 15.521 2.686 3.577 3.269 0.309 71155 0.66 18.027 15.095 2.932 3.572 3.268 0.304 71335 0.12 18.193 15.246 2.946 3.577 3.235 0.342 71695 0.61 18.040 14.364 3.676 3.572 3.161 0.411 71875 0.86 17.964 14.232 3.732 3.568 3.176 0.393 72055 0.51 18.071 15.075 2.996 3.574 3.233 0.341 72235 0.45 18.091 16.163 1.927 3.574 3.342 0.233 72595 0.43 18.097 16.404 1.693 3.575 3.362 0.213 72775 0.12 18.193 17.208 0.984 3.577 3.425 0.152 72955 0.27 18.146 17.510 0.636 3.576 3.448 0.128 73495 0.46 18.087 16.932 1.155 3.574 3.397 0.177 73675 0.32 18.131 17.097 1.034 3.576 3.422 0.154 73855 -0.08 18.251 17.349 0.902 3.578 3.431 0.147 74035 0.33 18.128 16.997 1.131 3.576 3.412 0.164 74395 0.29 18.141 17.402 0.740 3.576 3.438 0.138 74575 0.41 18.102 17.736 0.366 3.575 3.467 0.107 74755 0.31 18.135 17.330 0.805 3.576 3.428 0.148 75295 0.66 18.025 16.777 1.248 3.571 3.383 0.188 75475 0.27 18.146 17.490 0.656 3.576 3.443 0.133 75655 0.46 18.087 18.093 -0.007 3.574 3.491 0.083 75835 0.17 18.176 18.253 -0.077 3.577 3.513 0.064 76195 0.17 18.176 18.293 -0.117 3.577 3.503 0.074 76555 0.21 18.166 18.059 0.107 3.577 3.488 0.089 76735 0.12 18.193 18.363 -0.170 3.577 3.497 0.080 77095 -0.03 18.237 18.407 -0.170 3.578 3.494 0.083 77275 0.17 18.176 18.313 -0.137 3.577 3.502 0.075 77455 0.02 18.222 18.246 -0.024 3.578 3.496 0.082 77635 0.15 18.182 18.464 -0.281 3.577 3.522 0.055 77995 0.16 18.181 18.367 -0.186 3.577 3.517 0.060 78175 0.12 18.193 18.200 -0.007 3.577 3.510 0.068 78355 0.17 18.177 18.363 -0.185 3.577 3.509 0.067 78535 0.12 18.193 18.110 0.083 3.577 3.504 0.074 78895 0.17 18.178 18.153 0.025 3.577 3.508 0.068 79075 0.17 18.176 18.253 -0.077 3.577 3.497 0.079 79255 0.12 18.193 18.306 -0.114 3.577 3.507 0.070 79795 0.17 18.178 18.116 0.062 3.577 3.509 0.068 79975 0.46 18.087 18.407 -0.320 3.574 3.516 0.058 80155 0.17 18.177 18.083 0.095 3.577 3.498 0.079 80335 0.46 18.087 18.413 -0.326 3.574 3.502 0.072 80695 0.51 18.071 18.240 -0.168 3.574 3.503 0.070 80875 0.17 18.177 18.400 -0.223 3.577 3.490 0.087 81055 -0.03 18.237 18.060 0.177 3.578 3.501 0.076 81235 0.08 18.204 19.181 -0.977 3.577 3.558 0.019 81595 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 81775 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 81955 0.10 18.198 18.991 -0.793 3.577 3.552 0.026 82135 0.22 18.163 17.683 0.480 3.577 3.440 0.137 82495 0.71 18.009 16.489 1.520 3.571 3.380 0.191 82675 0.44 18.093 16.017 2.076 3.574 3.350 0.225 82855 0.92 17.945 15.266 2.679 3.567 3.275 0.292 83035 0.65 18.029 14.905 3.124 3.572 3.250 0.322 83395 0.74 18.000 14.439 3.561 3.570 3.215 0.355 83575 0.71 18.009 14.757 3.252 3.571 3.256 0.315 83755 0.73 18.005 14.588 3.417 3.570 3.217 0.353 83935 0.76 17.993 14.667 3.326 3.570 3.240 0.330 84295 0.76 17.993 14.501 3.492 3.570 3.237 0.333 84475 0.78 17.987 14.506 3.481 3.570 3.203 0.367 84655 0.56 18.056 14.293 3.763 3.573 3.226 0.347 85195 0.79 17.985 14.487 3.498 3.569 3.197 0.372 85375 0.97 17.929 14.307 3.622 3.566 3.213 0.353 85555 0.79 17.985 14.427 3.558 3.569 3.199 0.371 85735 0.87 17.961 14.145 3.817 3.568 3.207 0.361 86095 1.17 17.863 13.886 3.977 3.562 3.186 0.376 86275 0.92 17.942 13.762 4.180 3.567 3.149 0.418 86455 0.87 17.961 13.781 4.180 3.568 3.175 0.393 86635 0.93 17.940 13.755 4.185 3.567 3.139 0.428 86995 0.94 17.936 13.709 4.227 3.567 3.146 0.420 87175 1.12 17.880 13.612 4.268 3.563 3.165 0.397 87355 1.04 17.906 13.275 4.631 3.565 3.111 0.454 87535 1.17 17.863 12.854 5.010 3.562 3.072 0.490 87895 1.27 17.830 13.047 4.783 3.559 3.114 0.444 88075 1.21 17.852 12.757 5.095 3.561 3.046 0.515 88255 1.33 17.813 12.404 5.409 3.558 3.029 0.528 88435 1.34 17.809 12.442 5.367 3.557 3.004 0.553 88795 1.42 17.783 12.262 5.520 3.555 2.973 0.582 88975 1.33 17.813 11.977 5.837 3.558 2.968 0.589 89155 1.64 17.711 11.717 5.994 3.548 2.900 0.649 89335 1.80 17.658 11.669 5.988 3.543 2.914 0.629 89695 1.43 17.779 11.579 6.201 3.555 2.894 0.661 89875 1.75 17.675 11.513 6.162 3.545 2.868 0.677 90055 1.80 17.658 11.525 6.133 3.543 2.889 0.654 90595 1.83 17.648 11.351 6.297 3.542 2.837 0.705 90775 1.96 17.604 11.240 6.364 3.537 2.797 0.741 90955 1.55 17.739 12.120 5.619 3.551 2.902 0.649 91135 1.27 17.830 14.180 3.650 3.559 3.141 0.418 91495 0.27 18.148 17.077 1.071 3.576 3.389 0.187 91675 0.23 18.159 17.925 0.234 3.576 3.452 0.125 91855 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92035 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92395 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000