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 08 03 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 54625 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 54805 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 54985 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55165 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55525 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55705 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55885 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 56065 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 56425 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 56605 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 56785 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 56965 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 57325 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 57505 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 57685 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 57865 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 58225 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 58405 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 58585 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59125 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59305 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59485 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 59665 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60025 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60205 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60385 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 60925 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61105 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61285 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61465 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 61825 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62185 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62365 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62725 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 62905 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63085 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63265 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63625 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63805 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 63985 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64165 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64525 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64705 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 64885 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65425 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65605 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65785 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 65965 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66325 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66505 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66685 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 66865 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67225 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67405 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67585 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 67765 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68125 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68305 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68485 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68665 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69025 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69205 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69385 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69565 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69925 0.30 18.890 17.477 1.414 3.537 3.322 0.214 70105 0.62 18.807 15.325 3.483 3.548 3.137 0.411 70285 1.19 18.653 13.440 5.213 3.564 2.970 0.593 70825 2.34 18.324 9.061 9.263 3.578 9999.000 9999.000 71005 2.31 18.335 8.969 9.366 3.578 9999.000 9999.000 71185 2.29 18.338 9.125 9.213 3.578 9999.000 9999.000 71365 2.50 18.278 8.700 9.577 3.578 9999.000 9999.000 71725 1.69 18.512 10.963 7.549 3.573 9999.000 9999.000 71905 1.10 18.677 13.147 5.530 3.562 9999.000 9999.000 72085 0.43 18.856 15.175 3.681 3.542 9999.000 9999.000 72265 0.39 18.866 16.481 2.385 3.540 9999.000 9999.000 72625 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72805 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72985 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73165 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000