48 1001 ELKINS, JAMES; HURST, DALE; ROMASHKIN, PAVEL; DUTTON, GEOFF U.S. DEPT OF COMMERCE, NOAA / CMDL / HALOCARBONS AND OTHER ATMOSPHERIC TRACE SPECIES GROUP ACATS SOLVE 1 1 2000 01 31 2000 12 21 0 ELAPSED TIME IN SECONDS FROM 00:00:00 GMT ON SAMPLE DATE 8 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 Mean Age of Air (years) Mean Age Error (1-sd) (years) Total Br (ppt) Total Organic Br (ppt) Total Inorganic Br (ppt) Total Cl (ppb) Total Organic Cl (ppb) Total Inorganic Cl (ppb) 25 The mean age (Age) of each sampled air mass was determined from the corresponding ACATS measurement of SF6 and the documented tropospheric trend of SF6 [Geller et al., 1997] using a variation of the mean age formula in Volk et al. [1997]. We use dG = -0.8 to account for a SF6 calibration scale change. This term no longer represents only a delay from the surface to the tropopause. The mean age error reported is solely based on the SF6 measurement precision and is thus useful in comparing ACATS ages from different flights. Absolute accuracy of the SF6 measurement and any systematic errors in the method used to calculate mean ages are not included. Organic chlorine (CCly) was calculated from ACATS in-situ measurements of CFC-11, CFC-12, CFC-113, CH3CCl3, and CCl4. Contributions to CCly from CH3Cl and HCFC-22 (measured by WAS) were calculated from their correlations with tracers measured by ACATS. Organic bromine (CBry) was calculated from ACATS in-situ measurements of halon-1211. Contributions to CBry from CH3Br, halon-2402, halon-1301, CH2Br2, and CH2BrCl (measured by WAS) were calculated from their correlations with tracers measured by ACATS using the formula in Wamsley et al. [1997]. The total chlorine (TotalCl) and total bromine (TotalBr) content of each sampled air mass was calculated from the documented tropospheric trends of chlorinated and brominated trace gases (e.g., Montzka et al. [1996]) and weighted with a mean age spectrum calculated by Hall & Plumb [1994]. Inorganic chlorine (Cly) and inorganic bromine (Bry) were calculated as TotalCl-CCly and TotalBr-CBry, respectively. Data submitted only for air masses with potential temperature greater than 380 K. 1 GMTs Age AgeERR TotalBr CBry Bry TotalCl CCly Cly 36556 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 36626 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 36696 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 36766 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 36836 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 36906 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 36976 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 37116 3.87 0.47 18.828 9999.000 9999.000 3.456 9999.000 9999.000 37186 3.66 0.46 18.895 7.501 11.394 3.453 2.142 1.311 37256 3.83 0.47 18.842 9999.000 9999.000 3.456 9999.000 9999.000 37326 4.47 0.44 18.639 5.221 13.418 3.462 1.828 1.634 37396 4.39 0.43 18.666 9999.000 9999.000 3.461 9999.000 9999.000 37466 4.69 0.44 18.571 3.751 14.821 3.463 1.600 1.863 37536 4.78 0.44 18.544 9999.000 9999.000 3.463 9999.000 9999.000 37676 4.60 0.44 18.598 9999.000 9999.000 3.463 9999.000 9999.000 37746 5.54 0.46 18.318 2.084 16.234 3.463 1.260 2.203 37816 5.27 0.45 18.397 9999.000 9999.000 3.464 9999.000 9999.000 37956 5.32 0.45 18.384 9999.000 9999.000 3.464 9999.000 9999.000 38026 5.00 0.45 18.477 1.434 17.043 3.464 1.108 2.356 38096 5.00 0.45 18.477 9999.000 9999.000 3.464 9999.000 9999.000 38236 4.87 0.44 18.518 9999.000 9999.000 3.464 9999.000 9999.000 38306 5.18 0.45 18.424 1.696 16.728 3.464 1.157 2.307 38376 5.45 0.46 18.345 9999.000 9999.000 3.463 9999.000 9999.000 38446 4.87 0.44 18.518 1.500 17.018 3.464 1.118 2.345 38516 4.65 0.44 18.585 9999.000 9999.000 3.463 9999.000 9999.000 38586 4.87 0.44 18.518 1.925 16.592 3.464 1.277 2.186 38656 4.52 0.44 18.625 9999.000 9999.000 3.462 9999.000 9999.000 38796 5.09 0.45 18.451 9999.000 9999.000 3.464 9999.000 9999.000 38866 4.78 0.44 18.544 1.737 16.807 3.463 1.228 2.235 38936 4.87 0.44 18.518 9999.000 9999.000 3.464 9999.000 9999.000 39006 4.78 0.44 18.544 1.725 16.819 3.463 1.236 2.227 39076 5.14 0.45 18.437 9999.000 9999.000 3.464 9999.000 9999.000 39146 5.00 0.45 18.477 1.599 16.878 3.464 1.195 2.269 39216 4.78 0.44 18.544 9999.000 9999.000 3.463 9999.000 9999.000 39356 5.23 0.45 18.411 9999.000 9999.000 3.464 9999.000 9999.000 39426 4.91 0.44 18.504 1.642 16.862 3.464 1.181 2.283 39496 4.78 0.44 18.544 9999.000 9999.000 3.463 9999.000 9999.000 39566 4.96 0.45 18.491 1.711 16.779 3.464 1.217 2.246 39636 4.78 0.44 18.544 9999.000 9999.000 3.463 9999.000 9999.000 39706 5.00 0.45 18.477 1.668 16.809 3.464 1.203 2.261 39776 5.00 0.45 18.477 9999.000 9999.000 3.464 9999.000 9999.000 39916 4.82 0.44 18.531 9999.000 9999.000 3.464 9999.000 9999.000 39986 5.32 0.45 18.384 1.828 16.556 3.464 1.240 2.224 40056 4.91 0.44 18.504 9999.000 9999.000 3.464 9999.000 9999.000 40126 5.23 0.45 18.411 1.724 16.687 3.464 1.213 2.251 40196 5.09 0.45 18.451 9999.000 9999.000 3.464 9999.000 9999.000 40266 5.09 0.45 18.451 1.181 17.270 3.464 1.076 2.388 40336 4.91 0.44 18.504 9999.000 9999.000 3.464 9999.000 9999.000 40476 5.18 0.45 18.424 9999.000 9999.000 3.464 9999.000 9999.000 40546 5.54 0.46 18.318 1.331 16.987 3.463 1.117 2.346 40616 5.27 0.45 18.397 9999.000 9999.000 3.464 9999.000 9999.000 40756 5.27 0.45 18.397 9999.000 9999.000 3.464 9999.000 9999.000 40826 5.54 0.46 18.318 1.309 17.009 3.463 1.089 2.374 40896 5.09 0.45 18.451 9999.000 9999.000 3.464 9999.000 9999.000 41036 5.36 0.45 18.371 9999.000 9999.000 3.464 9999.000 9999.000 41106 5.27 0.45 18.397 1.379 17.018 3.464 1.118 2.345 41176 5.23 0.45 18.411 9999.000 9999.000 3.464 9999.000 9999.000 41246 5.18 0.45 18.424 1.171 17.253 3.464 1.051 2.413 41316 5.14 0.45 18.437 9999.000 9999.000 3.464 9999.000 9999.000 41386 5.59 0.46 18.305 0.975 17.330 3.463 0.965 2.497 41456 5.54 0.46 18.318 9999.000 9999.000 3.463 9999.000 9999.000 41596 5.45 0.46 18.345 9999.000 9999.000 3.463 9999.000 9999.000 41666 5.41 0.45 18.358 0.857 17.500 3.463 0.915 2.548 41736 5.63 0.46 18.292 9999.000 9999.000 3.462 9999.000 9999.000 41876 5.59 0.46 18.305 9999.000 9999.000 3.463 9999.000 9999.000 41946 5.50 0.46 18.331 0.938 17.393 3.463 0.940 2.523 42016 5.59 0.46 18.305 9999.000 9999.000 3.463 9999.000 9999.000 42156 5.77 0.46 18.253 9999.000 9999.000 3.461 9999.000 9999.000 42226 5.63 0.46 18.292 0.874 17.418 3.462 0.912 2.550 42296 5.86 0.46 18.226 9999.000 9999.000 3.461 9999.000 9999.000 42366 5.50 0.46 18.331 0.882 17.449 3.463 0.925 2.538 42436 5.59 0.46 18.305 9999.000 9999.000 3.463 9999.000 9999.000 42506 5.82 0.46 18.239 0.943 17.297 3.461 0.939 2.522 42576 5.45 0.46 18.345 9999.000 9999.000 3.463 9999.000 9999.000 42716 5.36 0.45 18.371 9999.000 9999.000 3.464 9999.000 9999.000 42786 5.54 0.46 18.318 0.916 17.402 3.463 0.924 2.539 42856 5.36 0.45 18.371 9999.000 9999.000 3.464 9999.000 9999.000 42926 5.36 0.45 18.371 0.980 17.391 3.464 0.961 2.503 42996 5.82 0.46 18.239 9999.000 9999.000 3.461 9999.000 9999.000 43066 5.77 0.46 18.253 1.014 17.238 3.461 0.953 2.509 43136 5.63 0.46 18.292 9999.000 9999.000 3.462 9999.000 9999.000 43276 5.59 0.46 18.305 9999.000 9999.000 3.463 9999.000 9999.000 43346 5.59 0.46 18.305 1.292 17.013 3.463 1.042 2.421 43416 5.09 0.45 18.451 9999.000 9999.000 3.464 9999.000 9999.000 43556 4.91 0.44 18.504 9999.000 9999.000 3.464 9999.000 9999.000 43626 4.60 0.44 18.598 4.355 14.243 3.463 1.689 1.774 43696 4.21 0.47 18.720 9999.000 9999.000 3.460 9999.000 9999.000 43836 4.00 0.47 18.788 9999.000 9999.000 3.458 9999.000 9999.000 43906 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 43976 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 44046 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 44116 4.60 0.44 18.598 9999.000 9999.000 3.463 9999.000 9999.000 44186 4.74 0.44 18.558 6.207 12.351 3.463 1.985 1.479 44256 4.87 0.44 18.518 9999.000 9999.000 3.464 9999.000 9999.000 44396 4.91 0.44 18.504 9999.000 9999.000 3.464 9999.000 9999.000 44466 4.74 0.44 18.558 3.492 15.066 3.463 1.513 1.950 44536 5.00 0.45 18.477 9999.000 9999.000 3.464 9999.000 9999.000 44606 5.32 0.45 18.384 2.282 16.102 3.464 1.286 2.178 44676 5.36 0.45 18.371 9999.000 9999.000 3.464 9999.000 9999.000 44746 5.63 0.46 18.292 1.519 16.773 3.462 1.090 2.372 44816 5.41 0.45 18.358 9999.000 9999.000 3.463 9999.000 9999.000 44956 5.59 0.46 18.305 9999.000 9999.000 3.463 9999.000 9999.000 45026 5.27 0.45 18.397 1.584 16.814 3.464 1.114 2.350 45096 5.14 0.45 18.437 9999.000 9999.000 3.464 9999.000 9999.000 45236 5.41 0.45 18.358 9999.000 9999.000 3.463 9999.000 9999.000 45306 5.45 0.46 18.345 1.282 17.062 3.463 1.068 2.395 45376 5.68 0.46 18.279 9999.000 9999.000 3.462 9999.000 9999.000 45516 5.41 0.45 18.358 9999.000 9999.000 3.463 9999.000 9999.000 45586 5.09 0.45 18.451 0.969 17.482 3.464 0.974 2.490 45656 5.41 0.45 18.358 9999.000 9999.000 3.463 9999.000 9999.000 45726 5.50 0.46 18.331 0.817 17.515 3.463 0.907 2.556 45796 5.27 0.45 18.397 9999.000 9999.000 3.464 9999.000 9999.000 45866 5.96 0.47 18.200 0.622 17.578 3.460 0.820 2.640 45936 5.63 0.46 18.292 9999.000 9999.000 3.462 9999.000 9999.000 46076 5.77 0.46 18.253 9999.000 9999.000 3.461 9999.000 9999.000 46146 5.73 0.46 18.266 0.662 17.603 3.462 0.836 2.626 46216 5.77 0.46 18.253 9999.000 9999.000 3.461 9999.000 9999.000 46356 5.14 0.45 18.437 9999.000 9999.000 3.464 9999.000 9999.000 46426 5.63 0.46 18.292 0.842 17.450 3.462 0.907 2.555 46496 5.32 0.45 18.384 9999.000 9999.000 3.464 9999.000 9999.000 46636 5.32 0.45 18.384 9999.000 9999.000 3.464 9999.000 9999.000 46706 5.23 0.45 18.411 0.803 17.608 3.464 0.936 2.528 46776 5.41 0.45 18.358 9999.000 9999.000 3.463 9999.000 9999.000 46846 5.68 0.46 18.279 0.812 17.467 3.462 0.907 2.555 46916 5.36 0.45 18.371 9999.000 9999.000 3.464 9999.000 9999.000 46986 5.82 0.46 18.239 0.757 17.483 3.461 0.897 2.564 47056 5.41 0.45 18.358 9999.000 9999.000 3.463 9999.000 9999.000 47196 5.86 0.46 18.226 9999.000 9999.000 3.461 9999.000 9999.000 47266 5.23 0.45 18.411 0.814 17.596 3.464 0.916 2.548 47336 5.45 0.46 18.345 9999.000 9999.000 3.463 9999.000 9999.000 47406 5.45 0.46 18.345 1.271 17.074 3.463 1.036 2.427 47476 5.18 0.45 18.424 9999.000 9999.000 3.464 9999.000 9999.000 47546 4.82 0.44 18.531 2.060 16.471 3.464 1.233 2.231 47616 4.96 0.45 18.491 9999.000 9999.000 3.464 9999.000 9999.000 47756 4.96 0.45 18.491 9999.000 9999.000 3.464 9999.000 9999.000 47826 4.87 0.44 18.518 2.483 16.034 3.464 1.336 2.128 47896 4.78 0.44 18.544 9999.000 9999.000 3.463 9999.000 9999.000 47966 4.82 0.44 18.531 2.352 16.179 3.464 1.296 2.168 48036 4.91 0.44 18.504 9999.000 9999.000 3.464 9999.000 9999.000 48106 4.96 0.45 18.491 2.959 15.532 3.464 1.409 2.054 48176 4.74 0.44 18.558 9999.000 9999.000 3.463 9999.000 9999.000 48316 4.08 0.47 18.761 9999.000 9999.000 3.459 9999.000 9999.000 48386 4.17 0.47 18.734 5.986 12.748 3.459 1.935 1.525 48456 3.62 0.46 18.908 9999.000 9999.000 3.453 9999.000 9999.000 48526 3.66 0.46 18.895 8.387 10.508 3.453 2.265 1.188 48596 4.04 0.47 18.774 9999.000 9999.000 3.458 9999.000 9999.000 48666 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 48736 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 48876 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 48946 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 49016 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000