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 03 18 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 64874 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65054 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65414 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65594 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65954 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66134 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66494 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66674 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67034 9999.00 9999.000 9999.000 9999.000 9999.000 2.412 9999.000 67214 9999.00 9999.000 9999.000 9999.000 9999.000 2.352 9999.000 67574 9999.00 9999.000 9999.000 9999.000 9999.000 2.144 9999.000 67754 9999.00 9999.000 9999.000 9999.000 9999.000 2.104 9999.000 68114 9999.00 9999.000 9999.000 9999.000 9999.000 2.056 9999.000 68294 9999.00 9999.000 9999.000 9999.000 9999.000 2.104 9999.000 68654 9999.00 9999.000 9999.000 9999.000 9999.000 2.054 9999.000 68834 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69194 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69374 9999.00 9999.000 9999.000 9999.000 9999.000 2.188 9999.000 69734 9999.00 9999.000 9999.000 9999.000 9999.000 2.237 9999.000 69914 9999.00 9999.000 9999.000 9999.000 9999.000 2.251 9999.000 70375 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70555 9999.00 9999.000 9999.000 9999.000 9999.000 2.355 9999.000 70915 9999.00 9999.000 9999.000 9999.000 9999.000 2.104 9999.000 71095 9999.00 9999.000 9999.000 9999.000 9999.000 2.082 9999.000 71455 9999.00 9999.000 9999.000 9999.000 9999.000 1.982 9999.000 71635 9999.00 9999.000 9999.000 9999.000 9999.000 2.011 9999.000 71995 9999.00 9999.000 9999.000 9999.000 9999.000 2.060 9999.000 72175 9999.00 9999.000 9999.000 9999.000 9999.000 2.150 9999.000 72535 9999.00 9999.000 9999.000 9999.000 9999.000 2.022 9999.000 72715 9999.00 9999.000 9999.000 9999.000 9999.000 1.973 9999.000 73075 9999.00 9999.000 9999.000 9999.000 9999.000 2.066 9999.000 73255 9999.00 9999.000 9999.000 9999.000 9999.000 2.092 9999.000 73615 9999.00 9999.000 9999.000 9999.000 9999.000 2.008 9999.000 73795 9999.00 9999.000 9999.000 9999.000 9999.000 1.980 9999.000 74155 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74335 9999.00 9999.000 9999.000 9999.000 9999.000 2.131 9999.000 74695 9999.00 9999.000 9999.000 9999.000 9999.000 2.054 9999.000 74875 9999.00 9999.000 9999.000 9999.000 9999.000 2.035 9999.000 75235 9999.00 9999.000 9999.000 9999.000 9999.000 2.030 9999.000 75415 9999.00 9999.000 9999.000 9999.000 9999.000 2.084 9999.000 75775 9999.00 9999.000 9999.000 9999.000 9999.000 2.142 9999.000 75955 9999.00 9999.000 9999.000 9999.000 9999.000 2.094 9999.000 76315 9999.00 9999.000 9999.000 9999.000 9999.000 2.053 9999.000 76495 9999.00 9999.000 9999.000 9999.000 9999.000 1.991 9999.000 76855 9999.00 9999.000 9999.000 9999.000 9999.000 2.038 9999.000 77035 9999.00 9999.000 9999.000 9999.000 9999.000 2.022 9999.000 77395 9999.00 9999.000 9999.000 9999.000 9999.000 2.127 9999.000 77575 9999.00 9999.000 9999.000 9999.000 9999.000 2.116 9999.000 77935 9999.00 9999.000 9999.000 9999.000 9999.000 2.074 9999.000 78115 9999.00 9999.000 9999.000 9999.000 9999.000 2.091 9999.000 78475 9999.00 9999.000 9999.000 9999.000 9999.000 2.148 9999.000 78655 9999.00 9999.000 9999.000 9999.000 9999.000 2.161 9999.000 79015 9999.00 9999.000 9999.000 9999.000 9999.000 2.075 9999.000 79195 9999.00 9999.000 9999.000 9999.000 9999.000 2.054 9999.000 79555 9999.00 9999.000 9999.000 9999.000 9999.000 2.118 9999.000 79735 9999.00 9999.000 9999.000 9999.000 9999.000 1.955 9999.000 80095 9999.00 9999.000 9999.000 9999.000 9999.000 2.045 9999.000 80275 9999.00 9999.000 9999.000 9999.000 9999.000 2.030 9999.000 80635 9999.00 9999.000 9999.000 9999.000 9999.000 2.065 9999.000 80815 9999.00 9999.000 9999.000 9999.000 9999.000 2.034 9999.000 81175 9999.00 9999.000 9999.000 9999.000 9999.000 1.995 9999.000 81355 9999.00 9999.000 9999.000 9999.000 9999.000 2.013 9999.000 81715 9999.00 9999.000 9999.000 9999.000 9999.000 1.994 9999.000 81895 9999.00 9999.000 9999.000 9999.000 9999.000 2.059 9999.000 82255 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 82435 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 82795 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 82975 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 83335 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 83515 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 83875 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 84055 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 84415 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000