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 06 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 54725 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 54905 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55085 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55265 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55625 0.18 19.007 18.371 0.636 3.517 3.361 0.156 55805 0.37 18.960 17.269 1.691 3.526 3.309 0.217 55985 0.57 18.908 16.517 2.392 3.534 3.238 0.296 56165 0.83 18.841 15.479 3.362 3.544 3.155 0.389 56525 1.22 18.737 14.050 4.687 3.556 3.018 0.538 56705 1.59 18.635 13.625 5.010 3.565 2.982 0.583 56885 1.46 18.672 13.166 5.505 3.562 2.931 0.631 57065 1.96 18.533 13.057 5.476 3.572 2.931 0.640 57425 2.29 18.439 12.084 6.356 3.576 2.812 0.764 57605 1.81 18.575 11.965 6.610 3.569 2.788 0.781 57785 2.05 18.506 11.955 6.551 3.573 2.796 0.777 57965 1.83 18.569 11.899 6.670 3.570 2.778 0.792 58325 2.26 18.447 10.323 8.124 3.575 2.581 0.994 58505 2.15 18.480 10.555 7.925 3.574 2.631 0.944 58685 2.15 18.478 10.759 7.719 3.574 2.637 0.938 59225 1.78 18.584 10.729 7.856 3.569 2.660 0.908 59405 2.17 18.473 10.645 7.828 3.574 2.626 0.948 59585 2.19 18.466 10.419 8.048 3.575 2.616 0.959 59765 2.27 18.444 10.281 8.164 3.576 2.579 0.997 60125 2.30 18.435 10.167 8.268 3.576 2.561 1.015 60305 2.15 18.480 10.419 8.061 3.574 2.599 0.975 60485 2.22 18.460 10.455 8.005 3.575 2.608 0.967 61025 2.57 18.357 10.435 7.921 3.578 2.595 0.983 61205 2.19 18.468 10.582 7.886 3.575 2.619 0.956 61385 2.57 18.357 10.545 7.812 3.578 2.614 0.963 61565 2.19 18.467 10.575 7.892 3.575 2.619 0.955 61925 2.15 18.479 10.745 7.733 3.574 2.638 0.936 62285 2.12 18.489 10.904 7.585 3.574 2.656 0.918 62465 1.73 18.597 10.816 7.781 3.568 2.645 0.923 62825 2.19 18.466 11.177 7.289 3.575 2.688 0.886 63005 2.06 18.504 11.001 7.503 3.573 2.677 0.897 63185 2.43 18.398 10.948 7.450 3.577 2.662 0.915 63365 2.17 18.474 10.662 7.812 3.574 2.629 0.945 63725 2.34 18.426 10.020 8.406 3.576 2.545 1.031 63905 2.52 18.371 9.878 8.493 3.577 2.517 1.061 64085 2.35 18.421 9.919 8.502 3.576 2.535 1.041 64265 2.29 18.439 9999.000 9999.000 3.576 9999.000 9999.000 64625 2.62 18.343 9.954 8.389 3.578 2.545 1.033 64805 2.34 18.425 9.954 8.472 3.576 2.548 1.028 64985 2.34 18.426 9.776 8.650 3.576 2.529 1.047 65525 2.42 18.401 9.620 8.780 3.577 2.499 1.078 65705 2.24 18.453 9.701 8.752 3.575 2.516 1.059 65885 2.45 18.392 9.506 8.886 3.577 2.482 1.095 66065 2.24 18.453 9.214 9.239 3.575 2.448 1.127 66425 2.05 18.506 9.396 9.111 3.573 2.477 1.096 66605 2.56 18.359 9.015 9.344 3.578 2.417 1.161 66785 2.38 18.412 9.037 9.375 3.576 2.424 1.152 66965 2.48 18.383 9.361 9.022 3.577 2.466 1.111 67325 2.64 18.336 8.633 9.703 3.578 2.369 1.209 67505 2.38 18.412 8.836 9.576 3.576 2.389 1.188 67685 2.64 18.336 8.663 9.673 3.578 2.370 1.208 67865 2.57 18.357 8.657 9.700 3.578 2.368 1.209 68225 2.48 18.385 8.991 9.394 3.577 2.419 1.158 68405 2.49 18.381 9.312 9.069 3.577 2.466 1.111 68585 2.15 18.480 9.523 8.957 3.574 2.506 1.068 68765 2.44 18.394 9.441 8.953 3.577 2.490 1.086 69125 2.55 18.362 8.971 9.391 3.577 2.432 1.145 69305 2.48 18.385 8.965 9.420 3.577 2.428 1.149 69485 2.62 18.342 8.680 9.662 3.578 2.387 1.191 69665 2.52 18.371 8.859 9.512 3.577 2.428 1.149 70025 2.15 18.480 8.981 9.498 3.574 2.444 1.131 70205 2.56 18.360 8.947 9.413 3.577 2.432 1.145 70385 2.29 18.439 8.606 9.833 3.576 2.390 1.185 70925 2.55 18.362 9.091 9.271 3.577 2.431 1.146 71105 1.46 18.673 12.450 6.222 3.562 2.845 0.717 71285 1.77 18.586 12.159 6.427 3.569 2.798 0.771 71465 0.18 19.007 16.948 2.059 3.517 3.265 0.252 71825 -0.03 19.060 18.701 0.359 3.507 3.393 0.114 72005 -0.03 19.061 18.910 0.151 3.507 3.411 0.097 72185 -0.24 19.112 18.721 0.391 3.496 3.386 0.110 72365 0.45 18.939 16.982 1.957 3.529 3.262 0.267 72725 1.65 18.621 12.573 6.048 3.566 2.851 0.715 72905 1.69 18.610 10.418 8.192 3.567 2.614 0.953 73085 2.29 18.439 10.109 8.331 3.576 2.574 1.002 73265 2.86 18.272 9.125 9.147 3.578 2.441 1.137 73625 2.96 18.243 7.877 10.366 3.578 2.251 1.327 73805 2.11 18.491 10.924 7.567 3.574 2.635 0.939 73985 0.70 18.874 18.304 0.570 3.539 3.360 0.179 74165 -0.02 19.058 18.929 0.129 3.508 3.408 0.100 74525 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74705 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74885 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000