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 02 08 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 61311 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61491 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61671 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61851 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62211 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62391 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62571 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62751 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63111 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63291 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63471 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63651 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64011 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64191 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64371 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64551 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64911 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65091 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65271 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65811 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65991 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66171 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66351 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66711 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66891 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67071 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67611 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67791 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67971 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68151 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68511 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68871 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69051 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69411 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69591 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69771 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69951 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70311 9999.00 9999.000 17.445 9999.000 9999.000 9999.000 9999.000 70491 1.00 18.572 17.185 1.387 3.570 3.273 0.297 70671 9999.00 9999.000 16.768 9999.000 9999.000 9999.000 9999.000 70851 9999.00 9999.000 15.272 9999.000 9999.000 9999.000 9999.000