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 06 01 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 68748 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68928 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69108 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69468 9999.00 9999.000 9999.000 9999.000 9999.000 3.426 9999.000 69648 9999.00 9999.000 9999.000 9999.000 9999.000 2.970 9999.000 69828 9999.00 9999.000 9999.000 9999.000 9999.000 2.368 9999.000 70188 9999.00 9999.000 9999.000 9999.000 9999.000 2.046 9999.000 70368 9999.00 9999.000 9999.000 9999.000 9999.000 1.989 9999.000 70548 9999.00 9999.000 9999.000 9999.000 9999.000 1.938 9999.000 70908 9999.00 9999.000 9999.000 9999.000 9999.000 1.962 9999.000 71088 9999.00 9999.000 9999.000 9999.000 9999.000 2.028 9999.000 71268 9999.00 9999.000 9999.000 9999.000 9999.000 1.948 9999.000 71808 9999.00 9999.000 9999.000 9999.000 9999.000 2.006 9999.000 71988 9999.00 9999.000 9999.000 9999.000 9999.000 1.926 9999.000 72168 9999.00 9999.000 9999.000 9999.000 9999.000 2.028 9999.000 72528 9999.00 9999.000 9999.000 9999.000 9999.000 2.030 9999.000 72708 9999.00 9999.000 9999.000 9999.000 9999.000 2.017 9999.000 72888 9999.00 9999.000 9999.000 9999.000 9999.000 1.888 9999.000 73248 9999.00 9999.000 9999.000 9999.000 9999.000 1.796 9999.000 73428 9999.00 9999.000 9999.000 9999.000 9999.000 1.817 9999.000 73608 9999.00 9999.000 9999.000 9999.000 9999.000 1.835 9999.000 73968 9999.00 9999.000 9999.000 9999.000 9999.000 1.977 9999.000 74148 9999.00 9999.000 9999.000 9999.000 9999.000 1.778 9999.000 74328 9999.00 9999.000 9999.000 9999.000 9999.000 1.766 9999.000 74868 9999.00 9999.000 9999.000 9999.000 9999.000 1.813 9999.000 75048 9999.00 9999.000 9999.000 9999.000 9999.000 1.974 9999.000 75228 9999.00 9999.000 9999.000 9999.000 9999.000 1.998 9999.000 75588 9999.00 9999.000 9999.000 9999.000 9999.000 2.058 9999.000 75768 9999.00 9999.000 9999.000 9999.000 9999.000 2.055 9999.000 75948 9999.00 9999.000 9999.000 9999.000 9999.000 1.885 9999.000 76308 9999.00 9999.000 9999.000 9999.000 9999.000 1.743 9999.000 76488 9999.00 9999.000 9999.000 9999.000 9999.000 1.986 9999.000 76668 9999.00 9999.000 9999.000 9999.000 9999.000 1.524 9999.000 77028 9999.00 9999.000 9999.000 9999.000 9999.000 1.717 9999.000 77208 9999.00 9999.000 9999.000 9999.000 9999.000 1.526 9999.000 77388 9999.00 9999.000 9999.000 9999.000 9999.000 1.668 9999.000 77928 9999.00 9999.000 9999.000 9999.000 9999.000 1.540 9999.000 78288 9999.00 9999.000 9999.000 9999.000 9999.000 1.417 9999.000 78648 9999.00 9999.000 9999.000 9999.000 9999.000 1.385 9999.000 78828 9999.00 9999.000 9999.000 9999.000 9999.000 1.361 9999.000 79008 9999.00 9999.000 9999.000 9999.000 9999.000 0.983 9999.000 79368 9999.00 9999.000 9999.000 9999.000 9999.000 0.972 9999.000 79728 9999.00 9999.000 9999.000 9999.000 9999.000 0.942 9999.000 80088 9999.00 9999.000 9999.000 9999.000 9999.000 0.965 9999.000 80268 9999.00 9999.000 9999.000 9999.000 9999.000 0.901 9999.000 80448 9999.00 9999.000 9999.000 9999.000 9999.000 0.915 9999.000 80988 9999.00 9999.000 9999.000 9999.000 9999.000 0.878 9999.000 81168 9999.00 9999.000 9999.000 9999.000 9999.000 0.872 9999.000 81348 9999.00 9999.000 9999.000 9999.000 9999.000 0.877 9999.000 81708 9999.00 9999.000 9999.000 9999.000 9999.000 0.855 9999.000 81888 9999.00 9999.000 9999.000 9999.000 9999.000 0.843 9999.000 82068 9999.00 9999.000 9999.000 9999.000 9999.000 0.860 9999.000 82428 9999.00 9999.000 9999.000 9999.000 9999.000 0.888 9999.000 82608 9999.00 9999.000 9999.000 9999.000 9999.000 0.911 9999.000 82788 9999.00 9999.000 9999.000 9999.000 9999.000 0.914 9999.000 83148 9999.00 9999.000 9999.000 9999.000 9999.000 1.271 9999.000 83328 9999.00 9999.000 9999.000 9999.000 9999.000 1.048 9999.000 83508 9999.00 9999.000 9999.000 9999.000 9999.000 1.610 9999.000 84048 9999.00 9999.000 9999.000 9999.000 9999.000 1.039 9999.000 84228 9999.00 9999.000 9999.000 9999.000 9999.000 1.379 9999.000 84408 9999.00 9999.000 9999.000 9999.000 9999.000 1.271 9999.000 84768 9999.00 9999.000 9999.000 9999.000 9999.000 1.040 9999.000 84948 9999.00 9999.000 9999.000 9999.000 9999.000 0.968 9999.000 85128 9999.00 9999.000 9999.000 9999.000 9999.000 0.947 9999.000 85488 9999.00 9999.000 9999.000 9999.000 9999.000 0.882 9999.000 85668 9999.00 9999.000 9999.000 9999.000 9999.000 0.889 9999.000 85848 9999.00 9999.000 9999.000 9999.000 9999.000 0.909 9999.000 86208 9999.00 9999.000 9999.000 9999.000 9999.000 0.925 9999.000 86388 9999.00 9999.000 9999.000 9999.000 9999.000 1.091 9999.000 86568 9999.00 9999.000 9999.000 9999.000 9999.000 1.228 9999.000 87108 9999.00 9999.000 9999.000 9999.000 9999.000 1.210 9999.000 87288 9999.00 9999.000 9999.000 9999.000 9999.000 1.237 9999.000 87468 9999.00 9999.000 9999.000 9999.000 9999.000 1.250 9999.000 87828 9999.00 9999.000 9999.000 9999.000 9999.000 1.340 9999.000 88008 9999.00 9999.000 9999.000 9999.000 9999.000 1.394 9999.000 88188 9999.00 9999.000 9999.000 9999.000 9999.000 1.349 9999.000 88548 9999.00 9999.000 9999.000 9999.000 9999.000 1.266 9999.000 88728 9999.00 9999.000 9999.000 9999.000 9999.000 1.113 9999.000 88908 9999.00 9999.000 9999.000 9999.000 9999.000 1.128 9999.000 89268 9999.00 9999.000 9999.000 9999.000 9999.000 1.317 9999.000 89448 9999.00 9999.000 9999.000 9999.000 9999.000 1.384 9999.000 89628 9999.00 9999.000 9999.000 9999.000 9999.000 1.379 9999.000 90168 9999.00 9999.000 9999.000 9999.000 9999.000 1.610 9999.000 90348 9999.00 9999.000 9999.000 9999.000 9999.000 1.543 9999.000 90528 9999.00 9999.000 9999.000 9999.000 9999.000 1.522 9999.000 90888 9999.00 9999.000 9999.000 9999.000 9999.000 1.413 9999.000 91068 9999.00 9999.000 9999.000 9999.000 9999.000 1.401 9999.000 91248 9999.00 9999.000 9999.000 9999.000 9999.000 1.408 9999.000 91608 9999.00 9999.000 9999.000 9999.000 9999.000 1.458 9999.000 91788 9999.00 9999.000 9999.000 9999.000 9999.000 1.447 9999.000 91968 9999.00 9999.000 9999.000 9999.000 9999.000 1.507 9999.000 92328 9999.00 9999.000 9999.000 9999.000 9999.000 1.351 9999.000 92508 9999.00 9999.000 9999.000 9999.000 9999.000 1.267 9999.000 92688 9999.00 9999.000 9999.000 9999.000 9999.000 1.399 9999.000 93228 9999.00 9999.000 9999.000 9999.000 9999.000 1.530 9999.000 93408 9999.00 9999.000 9999.000 9999.000 9999.000 1.509 9999.000 93588 9999.00 9999.000 9999.000 9999.000 9999.000 1.452 9999.000 93948 9999.00 9999.000 9999.000 9999.000 9999.000 1.336 9999.000 94128 9999.00 9999.000 9999.000 9999.000 9999.000 1.463 9999.000 94308 9999.00 9999.000 9999.000 9999.000 9999.000 2.111 9999.000 94668 9999.00 9999.000 9999.000 9999.000 9999.000 2.980 9999.000 94848 9999.00 9999.000 9999.000 9999.000 9999.000 3.279 9999.000 95028 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 95388 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 95568 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 95748 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000