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 07 30 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 61647 9999.00 9999.000 19.828 9999.000 9999.000 3.480 9999.000 61827 9999.00 9999.000 20.311 9999.000 9999.000 3.464 9999.000 62007 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62187 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62547 0.16 18.924 18.995 -0.071 3.532 3.395 0.137 62727 0.64 18.799 16.156 2.643 3.549 3.197 0.352 62907 0.82 18.751 15.100 3.651 3.554 3.114 0.440 63087 1.17 18.655 13.598 5.057 3.564 2.959 0.604 63447 2.01 18.418 10.379 8.039 3.576 2.563 1.013 63627 1.78 18.485 11.105 7.380 3.574 2.671 0.903 63807 2.13 18.383 9.940 8.443 3.577 2.521 1.056 63987 2.58 18.249 9.004 9.245 3.578 2.396 1.182 64347 2.58 18.249 8.800 9.449 3.578 2.372 1.205 64527 2.49 18.276 8.705 9.571 3.578 2.381 1.197 64707 2.58 18.249 8.790 9.459 3.578 2.376 1.202 64887 2.39 18.307 9.074 9.233 3.578 2.410 1.168 65247 2.34 18.321 9.227 9.094 3.578 9999.000 9999.000 65427 2.06 18.404 9.808 8.597 3.577 9999.000 9999.000 65607 2.30 18.334 9.333 9.001 3.578 9999.000 9999.000 66147 2.34 18.321 9.787 8.534 3.578 9999.000 9999.000 66327 2.17 18.370 9.783 8.587 3.577 9999.000 9999.000 66507 1.96 18.432 10.276 8.156 3.576 9999.000 9999.000 66687 1.98 18.427 10.461 7.966 3.576 9999.000 9999.000 67047 2.00 18.420 10.329 8.091 3.576 9999.000 9999.000 67227 2.06 18.404 10.175 8.229 3.577 9999.000 9999.000 67407 2.05 18.405 10.175 8.229 3.577 9999.000 9999.000 67947 1.92 18.445 10.796 7.650 3.575 9999.000 9999.000 68127 1.84 18.466 10.860 7.607 3.575 9999.000 9999.000 68307 2.44 18.292 10.901 7.392 3.578 9999.000 9999.000 68487 1.85 18.463 10.796 7.667 3.575 9999.000 9999.000 68847 1.82 18.471 10.934 7.537 3.575 9999.000 9999.000 69207 2.01 18.418 10.316 8.103 3.576 9999.000 9999.000 69387 1.96 18.432 10.540 7.891 3.576 9999.000 9999.000 69747 2.29 18.335 10.166 8.168 3.578 9999.000 9999.000 69927 2.20 18.364 9.637 8.727 3.577 9999.000 9999.000 70107 2.29 18.335 9.436 8.899 3.578 9999.000 9999.000 70287 2.25 18.347 9.451 8.896 3.578 9999.000 9999.000 70647 2.31 18.330 9.227 9.104 3.578 9999.000 9999.000 70827 2.49 18.278 9.277 9.001 3.578 9999.000 9999.000 71007 2.26 18.345 9.392 8.953 3.578 9999.000 9999.000 71187 1.78 18.485 11.188 7.297 3.574 9999.000 9999.000 71547 0.73 18.775 14.565 4.210 3.552 9999.000 9999.000 71727 0.50 18.834 16.735 2.099 3.545 3.282 0.262 71907 0.86 18.739 15.013 3.725 3.556 9999.000 9999.000 72447 0.84 18.744 14.990 3.754 3.555 9999.000 9999.000 72627 0.33 18.879 14.703 4.177 3.538 9999.000 9999.000 72807 1.56 18.548 12.034 6.514 3.571 9999.000 9999.000 72987 1.87 18.459 10.720 7.738 3.575 9999.000 9999.000 73347 2.25 18.349 8.778 9.571 3.578 9999.000 9999.000 73527 2.71 18.210 7.966 10.244 3.577 9999.000 9999.000 73707 2.87 18.160 7.847 10.314 3.576 9999.000 9999.000 73887 2.81 18.179 7.677 10.502 3.577 9999.000 9999.000 74247 2.75 18.199 7.846 10.354 3.577 9999.000 9999.000 74427 2.58 18.249 7.907 10.342 3.578 9999.000 9999.000 74607 2.70 18.214 8.041 10.174 3.577 9999.000 9999.000 74787 2.73 18.205 8.062 10.143 3.577 9999.000 9999.000 75147 2.63 18.234 7.601 10.634 3.578 9999.000 9999.000 75327 2.80 18.184 7.686 10.498 3.577 9999.000 9999.000 75507 2.83 18.175 7.619 10.556 3.577 9999.000 9999.000 75687 2.77 18.191 7.748 10.443 3.577 9999.000 9999.000 76047 2.78 18.188 7.715 10.473 3.577 9999.000 9999.000 76227 2.83 18.175 7.859 10.317 3.577 9999.000 9999.000 76407 2.71 18.210 7.946 10.264 3.577 9999.000 9999.000 76587 2.58 18.249 8.042 10.207 3.578 9999.000 9999.000 76947 2.58 18.249 8.180 10.069 3.578 9999.000 9999.000 77127 2.61 18.240 8.219 10.021 3.578 9999.000 9999.000 77307 2.92 18.145 8.277 9.868 3.576 9999.000 9999.000 77847 2.61 18.240 8.275 9.966 3.578 9999.000 9999.000 78027 2.53 18.263 8.278 9.985 3.578 9999.000 9999.000 78207 2.59 18.246 8.337 9.910 3.578 9999.000 9999.000 78387 2.49 18.278 8.384 9.894 3.578 9999.000 9999.000 78747 2.20 18.363 8.665 9.698 3.577 9999.000 9999.000 78927 9999.00 9999.000 8.659 9999.000 9999.000 9999.000 9999.000 79107 2.39 18.307 8.359 9.947 3.578 9999.000 9999.000 79287 2.53 18.265 8.495 9.770 3.578 9999.000 9999.000 79647 2.55 18.259 8.422 9.837 3.578 9999.000 9999.000 79827 2.25 18.349 8.603 9.746 3.578 9999.000 9999.000 80007 2.56 18.256 8.398 9.857 3.578 9999.000 9999.000 80187 2.06 18.404 9.116 9.288 3.577 9999.000 9999.000 80547 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 80727 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 80907 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 81087 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000