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 08 07 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 72268 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72448 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72628 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72808 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73168 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73348 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73528 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73708 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74068 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74248 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74428 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74608 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74968 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75148 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75328 0.14 18.935 18.244 0.691 3.530 3.378 0.152 75508 0.65 18.802 15.506 3.296 3.549 3.163 0.386 75868 1.34 18.614 12.404 6.210 3.567 2.854 0.713 76048 1.52 18.564 11.443 7.121 3.570 2.767 0.803 76228 1.65 18.528 11.005 7.523 3.572 9999.000 9999.000 76768 1.52 18.564 11.075 7.489 3.570 2.771 0.799 76948 1.68 18.519 10.865 7.655 3.572 9999.000 9999.000 77128 2.03 18.418 10.033 8.385 3.576 9999.000 9999.000 77308 1.70 18.514 10.753 7.761 3.573 9999.000 9999.000 77668 1.71 18.509 10.705 7.804 3.573 9999.000 9999.000 77848 1.80 18.485 10.658 7.827 3.574 9999.000 9999.000 78028 1.84 18.473 10.259 8.213 3.574 9999.000 9999.000 78568 1.84 18.472 9.805 8.667 3.575 9999.000 9999.000 78748 1.76 18.496 10.643 7.854 3.574 9999.000 9999.000 78928 1.34 18.615 12.514 6.101 3.567 9999.000 9999.000 79108 0.61 18.811 15.708 3.104 3.547 9999.000 9999.000 79468 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79828 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000