77 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 02 15 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) 55 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. To calculate HCFC-22 ALIAS CH4 was used. ACATS did not measure CCl4. A derived CCl4 from CFC-11 correlation is used in place. 1 GMTs Age TotalBr CBry Bry TotalCl CCly Cly 64673 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64853 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65033 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65213 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65573 -0.15 18.886 18.805 0.081 3.537 9999.000 9999.000 65753 -0.10 18.874 19.413 -0.538 3.539 9999.000 9999.000 65933 -0.15 18.886 19.478 -0.593 3.537 9999.000 9999.000 66113 1.21 18.517 14.230 4.288 3.573 9999.000 9999.000 66473 3.03 17.971 9.050 8.922 3.569 9999.000 9999.000 66653 3.14 17.935 8.849 9.087 3.567 9999.000 9999.000 66833 3.16 17.929 8.679 9.251 3.566 9999.000 9999.000 67013 3.35 17.870 8.611 9.259 3.562 9999.000 9999.000 67373 3.09 17.952 9.180 8.772 3.568 9999.000 9999.000 67553 2.98 17.987 9.154 8.834 3.570 9999.000 9999.000 67733 2.79 18.047 9.405 8.641 3.573 9999.000 9999.000 67913 2.88 18.019 9.514 8.505 3.571 9999.000 9999.000 68273 2.78 18.049 9.685 8.364 3.573 9999.000 9999.000 68453 2.59 18.108 10.106 8.003 3.575 9999.000 9999.000 68633 2.53 18.127 10.396 7.731 3.576 9999.000 9999.000 69173 1.67 18.384 13.272 5.113 3.577 9999.000 9999.000 69353 1.42 18.458 13.654 4.804 3.575 9999.000 9999.000 69533 2.05 18.272 12.781 5.490 3.578 9999.000 9999.000 69713 1.64 18.394 12.829 5.565 3.577 9999.000 9999.000 70073 2.18 18.233 11.316 6.917 3.578 9999.000 9999.000 70253 1.96 18.300 11.050 7.250 3.578 9999.000 9999.000 70433 2.33 18.188 10.888 7.300 3.577 9999.000 9999.000 70973 2.25 18.213 10.620 7.593 3.577 9999.000 9999.000 71153 2.45 18.151 10.583 7.568 3.576 9999.000 9999.000 71333 2.79 18.047 10.011 8.036 3.573 9999.000 9999.000 71513 2.78 18.050 9.742 8.309 3.573 9999.000 9999.000 71873 2.82 18.038 9.580 8.459 3.572 9999.000 9999.000 72233 2.72 18.068 9.853 8.216 3.573 9999.000 9999.000 72413 2.35 18.184 9.702 8.481 3.577 9999.000 9999.000 72773 2.35 18.184 10.194 7.990 3.577 9999.000 9999.000 72953 2.73 18.066 9.744 8.322 3.573 9999.000 9999.000 73133 2.89 18.015 9.258 8.758 3.571 9999.000 9999.000 73313 3.02 17.974 9.078 8.896 3.569 9999.000 9999.000 73673 3.39 17.855 8.119 9.736 3.561 9999.000 9999.000 73853 3.35 17.870 8.387 9.483 3.562 9999.000 9999.000 74033 3.46 17.832 7.916 9.917 3.559 9999.000 9999.000 74213 4.40 17.520 6.010 11.510 3.527 9999.000 9999.000 74573 1.91 18.314 12.310 6.005 3.578 9999.000 9999.000 74753 1.72 18.370 12.660 5.710 3.577 9999.000 9999.000 74933 0.74 18.648 15.601 3.047 3.564 9999.000 9999.000 75473 1.30 18.491 13.958 4.533 3.574 9999.000 9999.000 75653 1.67 18.384 13.438 4.947 3.577 9999.000 9999.000 75833 2.71 18.070 9.926 8.145 3.574 9999.000 9999.000 76013 3.55 17.803 7.686 10.117 3.557 9999.000 9999.000 76373 4.13 17.611 6.611 11.000 3.538 9999.000 9999.000 76553 4.16 17.602 6.221 11.381 3.537 9999.000 9999.000 76733 4.13 17.611 5.651 11.960 3.538 9999.000 9999.000 76913 4.41 17.519 5.570 11.949 3.527 9999.000 9999.000 77273 4.34 17.541 5.717 11.824 3.530 9999.000 9999.000 77453 4.68 17.426 5.610 11.816 3.515 9999.000 9999.000 77633 4.42 17.513 5.535 11.978 3.526 9999.000 9999.000 77813 4.51 17.483 5.666 11.817 3.522 9999.000 9999.000 78173 4.62 17.445 5.646 11.799 3.517 9999.000 9999.000 78353 4.51 17.482 5.386 12.096 3.522 9999.000 9999.000 78533 4.46 17.501 5.390 12.111 3.525 9999.000 9999.000 78713 4.56 17.466 5.138 12.328 3.520 9999.000 9999.000 79073 4.38 17.528 5.686 11.843 3.528 9999.000 9999.000 79253 4.08 17.629 5.873 11.756 3.540 9999.000 9999.000 79433 4.22 17.581 6.037 11.545 3.535 9999.000 9999.000 79613 4.29 17.557 5.717 11.840 3.532 9999.000 9999.000 79973 4.24 17.575 5.772 11.803 3.534 9999.000 9999.000 80153 4.31 17.553 5.838 11.715 3.531 9999.000 9999.000 80333 4.19 17.593 5.929 11.664 3.536 9999.000 9999.000 80873 4.43 17.511 5.505 12.006 3.526 9999.000 9999.000 81053 4.24 17.575 5.929 11.646 3.534 9999.000 9999.000 81233 4.26 17.568 5.930 11.639 3.533 9999.000 9999.000 81413 9999.00 9999.000 5.267 9999.000 9999.000 9999.000 9999.000 81773 4.24 17.575 5.681 11.894 3.534 9999.000 9999.000 81953 4.36 17.533 5.671 11.862 3.529 9999.000 9999.000 82133 4.24 17.575 6.012 11.563 3.534 9999.000 9999.000 82313 4.40 17.520 5.615 11.904 3.527 9999.000 9999.000 82673 4.17 17.599 6.140 11.459 3.537 9999.000 9999.000 82853 3.87 17.700 7.009 10.691 3.547 9999.000 9999.000 83033 1.30 18.492 13.887 4.605 3.574 9999.000 9999.000 83213 0.47 18.721 16.889 1.833 3.558 9999.000 9999.000 83573 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 83753 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 83933 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000