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 07 25 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 65244 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65424 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65604 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65784 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66144 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66324 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66504 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66684 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67044 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67224 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67404 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67584 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67944 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68124 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68304 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68484 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68844 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69024 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69204 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69744 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69924 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70104 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70284 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70644 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70824 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71004 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71544 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71724 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71904 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72084 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72444 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72804 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72984 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73344 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73524 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73704 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73884 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74244 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74424 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74604 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74784 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75144 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75324 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75504 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76044 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76224 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76404 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76584 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76944 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77124 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77304 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77484 9999.00 9999.000 17.216 9999.000 9999.000 3.271 9999.000 77844 1.66 18.514 11.086 7.428 3.573 9999.000 9999.000 78024 1.99 18.418 10.063 8.355 3.576 9999.000 9999.000 78204 2.29 18.331 9.256 9.076 3.578 9999.000 9999.000 78384 2.42 18.292 8.927 9.366 3.578 9999.000 9999.000 78744 2.96 18.131 6.958 11.173 3.576 9999.000 9999.000 78924 3.23 18.047 6.701 11.346 3.573 9999.000 9999.000 79104 3.21 18.054 6.741 11.313 3.573 9999.000 9999.000 79284 3.40 17.994 6.275 11.718 3.570 9999.000 9999.000 79644 3.58 17.938 5.788 12.149 3.567 9999.000 9999.000 79824 3.87 17.844 5.563 12.281 3.560 9999.000 9999.000 80004 3.88 17.841 4.978 12.862 3.560 9999.000 9999.000 80184 3.61 17.927 5.231 12.695 3.566 9999.000 9999.000 80544 3.31 18.023 6.696 11.326 3.571 9999.000 9999.000 80724 3.29 18.029 6.510 11.519 3.572 9999.000 9999.000 80904 3.11 18.085 7.166 10.919 3.574 9999.000 9999.000 81444 9999.00 9999.000 18.297 9999.000 9999.000 9999.000 9999.000 81624 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 81804 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 81984 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000