76 1001 ELKINS, JAMES; WAMSLEY, PAULA; HURST, DALE; ROMASHKIN, PAVEL; DUTTON, GEOFF U.S. DEPT OF COMMERCE, NOAA / CMDL / NITROUS OXIDE AND HALOCOMPOUNDS DIVISION ACATS ASHOE/MAESA 1 1 1994 05 23 1998 08 07 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) 54 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. ACATS did not measure SF6 on this flight. Mean age of air cannot be calculated. 1 GMTs Age TotalBr CBry Bry TotalCl CCly Cly 81456 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 81636 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 81816 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 82176 9999.00 9999.000 9999.000 9999.000 9999.000 2.749 9999.000 82356 9999.00 9999.000 9999.000 9999.000 9999.000 2.341 9999.000 82536 9999.00 9999.000 9999.000 9999.000 9999.000 2.355 9999.000 82896 9999.00 9999.000 9999.000 9999.000 9999.000 1.868 9999.000 83076 9999.00 9999.000 9999.000 9999.000 9999.000 1.948 9999.000 83256 9999.00 9999.000 9999.000 9999.000 9999.000 1.898 9999.000 83616 9999.00 9999.000 9999.000 9999.000 9999.000 1.852 9999.000 83796 9999.00 9999.000 9999.000 9999.000 9999.000 1.593 9999.000 83976 9999.00 9999.000 9999.000 9999.000 9999.000 1.783 9999.000 84516 9999.00 9999.000 9999.000 9999.000 9999.000 1.741 9999.000 84696 9999.00 9999.000 9999.000 9999.000 9999.000 1.583 9999.000 84876 9999.00 9999.000 9999.000 9999.000 9999.000 1.673 9999.000 85236 9999.00 9999.000 9999.000 9999.000 9999.000 1.682 9999.000 85416 9999.00 9999.000 9999.000 9999.000 9999.000 1.625 9999.000 85596 9999.00 9999.000 9999.000 9999.000 9999.000 1.661 9999.000 85956 9999.00 9999.000 9999.000 9999.000 9999.000 1.739 9999.000 86136 9999.00 9999.000 9999.000 9999.000 9999.000 1.716 9999.000 86316 9999.00 9999.000 9999.000 9999.000 9999.000 1.599 9999.000 86676 9999.00 9999.000 9999.000 9999.000 9999.000 1.528 9999.000 86856 9999.00 9999.000 9999.000 9999.000 9999.000 1.465 9999.000 87036 9999.00 9999.000 9999.000 9999.000 9999.000 1.619 9999.000 87576 9999.00 9999.000 9999.000 9999.000 9999.000 1.584 9999.000 87756 9999.00 9999.000 9999.000 9999.000 9999.000 1.544 9999.000 87936 9999.00 9999.000 9999.000 9999.000 9999.000 1.536 9999.000 88296 9999.00 9999.000 9999.000 9999.000 9999.000 1.529 9999.000 88476 9999.00 9999.000 9999.000 9999.000 9999.000 1.554 9999.000 88656 9999.00 9999.000 9999.000 9999.000 9999.000 1.494 9999.000 89016 9999.00 9999.000 9999.000 9999.000 9999.000 1.504 9999.000 89196 9999.00 9999.000 9999.000 9999.000 9999.000 1.613 9999.000 89376 9999.00 9999.000 9999.000 9999.000 9999.000 1.595 9999.000 89736 9999.00 9999.000 9999.000 9999.000 9999.000 1.502 9999.000 89916 9999.00 9999.000 9999.000 9999.000 9999.000 1.499 9999.000 90096 9999.00 9999.000 9999.000 9999.000 9999.000 1.593 9999.000 90636 9999.00 9999.000 9999.000 9999.000 9999.000 1.832 9999.000 90816 9999.00 9999.000 9999.000 9999.000 9999.000 2.255 9999.000 90996 9999.00 9999.000 9999.000 9999.000 9999.000 2.936 9999.000 91356 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 91536 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 91716 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000