54 1001 ELKINS, JAMES; WAMSLEY, PAULA; HURST, DALE; ROMASHKIN, PAVEL; DUTTON, GEOFF U.S. DEPT OF COMMERCE, NOAA / CMDL / NITROUS OXIDE AND HALOCOMPOUNDS DIVISION ACATS POLARIS 1 1 1997 09 10 1998 09 09 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) 32 Total chlorine and bromine are based on in situ measurements of organic species from ACATS-IV [see Elkins et al., 1996]. Mean age of the air in years from tropopause is calculated using tropospheric trends from Geller et al., [1997] and formula from Volk et al., [1997]. Total chlorine calculations based on total chlorine from Montzka et al.,[1996] and formula from Woodbridge et al. [1995] for missing chlorine species, HCFC-22 and CH3Cl. Total bromine calculations are from Wamsley et al., [1997]. All values derived from theta < 380 were excluded. 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, et al., 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, et al., 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, et al., 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 9164 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 9289 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 9414 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 9789 0.82 19.037 13.360 5.678 3.512 2.869 0.643 9914 -0.19 19.279 15.236 4.043 3.454 3.065 0.389 10039 0.76 19.052 13.408 5.644 3.509 2.886 0.623 10164 1.66 18.824 11.802 7.022 3.546 2.688 0.858 10414 2.88 18.489 9.423 9.066 3.574 2.381 1.193 10539 2.67 18.547 9.988 8.558 3.571 2.463 1.108 10664 3.01 18.450 9.200 9.251 3.575 2.346 1.229 10789 4.01 18.155 6.434 11.721 3.576 1.925 1.651 11039 4.45 18.017 4.917 13.100 3.571 1.687 1.884 11164 4.30 18.064 5.247 12.816 3.573 1.757 1.816 11289 4.40 18.032 5.075 12.957 3.572 1.717 1.855 11414 4.29 18.066 5.220 12.846 3.573 1.766 1.807 11664 4.28 18.070 5.259 12.812 3.574 1.781 1.793 11789 4.11 18.125 5.161 12.963 3.575 1.736 1.839 11914 4.29 18.068 5.255 12.813 3.573 1.773 1.800 12289 0.43 19.133 14.111 5.022 3.492 2.991 0.501 12414 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 12539 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 12664 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000