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 01 29 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 58014 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 58194 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 58374 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 58554 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 58914 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59094 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59274 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59454 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59814 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59994 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60174 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60354 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60714 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60894 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61074 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61254 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61614 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61794 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61974 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62514 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62694 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62874 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63054 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63414 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63594 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63774 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64314 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64494 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64674 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64854 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65214 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65574 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65754 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66114 0.60 18.673 17.745 0.928 3.562 9999.000 9999.000 66294 0.94 18.581 15.998 2.583 3.569 9999.000 9999.000 66474 1.15 18.520 14.890 3.630 3.572 9999.000 9999.000 66654 1.00 18.562 15.541 3.022 3.570 9999.000 9999.000 67014 0.86 18.601 16.338 2.263 3.568 3.232 0.336 67194 0.69 18.648 17.404 1.244 3.564 3.309 0.255 67374 9999.00 9999.000 17.502 9999.000 9999.000 3.329 9999.000 67554 1.15 18.520 15.146 3.374 3.572 3.120 0.453 67914 1.48 18.426 13.842 4.584 3.576 3.006 0.570 68094 1.68 18.367 12.238 6.130 3.577 9999.000 9999.000 68274 1.76 18.343 12.638 5.705 3.578 9999.000 9999.000 68814 1.74 18.350 11.955 6.395 3.578 9999.000 9999.000 68994 1.62 18.385 11.935 6.450 3.577 9999.000 9999.000 69174 1.84 18.322 11.699 6.623 3.578 9999.000 9999.000 69354 1.62 18.385 11.957 6.428 3.577 9999.000 9999.000 69714 1.81 18.329 11.208 7.121 3.578 9999.000 9999.000 69894 1.97 18.282 10.957 7.325 3.578 9999.000 9999.000 70074 2.64 18.079 8.561 9.518 3.574 9999.000 9999.000 70254 2.14 18.232 10.219 8.013 3.578 9999.000 9999.000 70614 2.21 18.211 9.829 8.382 3.577 9999.000 9999.000 70794 2.15 18.229 9.558 8.671 3.578 9999.000 9999.000 70974 2.34 18.170 9.343 8.826 3.577 9999.000 9999.000 71154 2.34 18.170 9.631 8.538 3.577 9999.000 9999.000 71514 2.39 18.155 9.009 9.145 3.576 9999.000 9999.000 71694 2.62 18.085 8.408 9.677 3.574 9999.000 9999.000 71874 2.64 18.079 8.235 9.843 3.574 9999.000 9999.000 72054 2.77 18.039 7.948 10.091 3.572 9999.000 9999.000 72414 3.00 17.965 7.221 10.745 3.568 9999.000 9999.000 72594 3.09 17.936 8.657 9.279 3.567 9999.000 9999.000 72774 2.72 18.055 8.037 10.018 3.573 9999.000 9999.000 72954 1.81 18.329 10.993 7.336 3.578 9999.000 9999.000 73314 2.10 18.243 10.876 7.367 3.578 9999.000 9999.000 73494 0.45 18.715 18.466 0.249 3.558 9999.000 9999.000 73674 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74214 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000