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 02 03 2001 01 03 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 This term no longer represents only a delay from the surface to the tropopause.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 373 K. 1 GMTs Age AgeERR TotalBr CBry Bry TotalCl CCly Cly 68876 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68946 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69016 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69086 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69156 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69226 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69296 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69436 3.54 0.46 18.931 9999.000 9999.000 3.451 9999.000 9999.000 69506 3.79 0.47 18.852 7.941 10.911 3.455 2.231 1.224 69576 3.50 0.46 18.944 9999.000 9999.000 3.451 9999.000 9999.000 69646 3.37 0.46 18.982 7.604 11.378 3.448 2.201 1.247 69716 3.33 0.46 18.995 9999.000 9999.000 3.448 9999.000 9999.000 69786 3.42 0.46 18.969 7.988 10.982 3.449 2.250 1.200 69856 3.62 0.46 18.905 9999.000 9999.000 3.453 9999.000 9999.000 69996 3.29 0.46 19.007 9999.000 9999.000 3.447 9999.000 9999.000 70066 3.54 0.46 18.931 8.211 10.719 3.451 2.263 1.188 70136 3.54 0.46 18.931 9999.000 9999.000 3.451 9999.000 9999.000 70276 3.13 0.45 19.056 9999.000 9999.000 3.444 9999.000 9999.000 70346 3.88 0.47 18.825 8.984 9.841 3.456 2.343 1.113 70416 3.58 0.46 18.918 9999.000 9999.000 3.452 9999.000 9999.000 70556 3.75 0.47 18.865 9999.000 9999.000 3.454 9999.000 9999.000 70626 3.54 0.46 18.931 7.820 11.111 3.451 2.215 1.236 70696 3.46 0.46 18.957 9999.000 9999.000 3.450 9999.000 9999.000 70766 3.67 0.46 18.892 7.811 11.081 3.453 2.209 1.244 70836 3.67 0.46 18.892 9999.000 9999.000 3.453 9999.000 9999.000 70906 3.37 0.46 18.982 7.634 11.348 3.448 2.179 1.269 70976 3.67 0.46 18.892 9999.000 9999.000 3.453 9999.000 9999.000 71116 3.33 0.46 18.995 9999.000 9999.000 3.448 9999.000 9999.000 71186 3.58 0.46 18.918 8.214 10.703 3.452 2.249 1.203 71256 3.58 0.46 18.918 9999.000 9999.000 3.452 9999.000 9999.000 71326 3.71 0.46 18.878 7.803 11.075 3.454 2.193 1.261 71396 3.42 0.46 18.969 9999.000 9999.000 3.449 9999.000 9999.000 71466 3.33 0.46 18.995 8.475 10.520 3.448 2.276 1.172 71536 3.46 0.46 18.957 9999.000 9999.000 3.450 9999.000 9999.000 71676 3.46 0.46 18.957 9999.000 9999.000 3.450 9999.000 9999.000 71746 3.62 0.46 18.905 8.609 10.296 3.453 2.287 1.166 71816 3.46 0.46 18.957 9999.000 9999.000 3.450 9999.000 9999.000 71886 3.58 0.46 18.918 8.556 10.361 3.452 2.286 1.166 71956 3.46 0.46 18.957 9999.000 9999.000 3.450 9999.000 9999.000 72026 3.58 0.46 18.918 8.934 9.983 3.452 2.338 1.114 72096 3.62 0.46 18.905 9999.000 9999.000 3.453 9999.000 9999.000 72236 3.84 0.47 18.838 9999.000 9999.000 3.455 9999.000 9999.000 72306 3.71 0.46 18.878 8.226 10.653 3.454 2.238 1.215 72376 3.75 0.47 18.865 9999.000 9999.000 3.454 9999.000 9999.000 72446 3.92 0.47 18.812 8.068 10.744 3.457 2.226 1.231 72516 3.71 0.46 18.878 9999.000 9999.000 3.454 9999.000 9999.000 72586 3.92 0.47 18.812 8.605 10.207 3.457 2.290 1.167 72656 3.50 0.46 18.944 9999.000 9999.000 3.451 9999.000 9999.000 72796 3.58 0.46 18.918 9999.000 9999.000 3.452 9999.000 9999.000 72866 4.05 0.47 18.771 8.409 10.363 3.458 2.259 1.199 72936 3.71 0.46 18.878 9999.000 9999.000 3.454 9999.000 9999.000 73076 3.50 0.46 18.944 9999.000 9999.000 3.451 9999.000 9999.000 73146 4.09 0.47 18.758 7.700 11.058 3.458 2.153 1.306 73216 4.22 0.47 18.717 9999.000 9999.000 3.460 9999.000 9999.000 73356 4.48 0.44 18.636 9999.000 9999.000 3.462 9999.000 9999.000 73426 4.61 0.44 18.596 3.807 14.789 3.463 1.585 1.877 73496 4.83 0.44 18.529 9999.000 9999.000 3.463 9999.000 9999.000 73566 4.88 0.44 18.515 3.577 14.938 3.464 1.548 1.915 73636 4.57 0.44 18.609 9999.000 9999.000 3.462 9999.000 9999.000 73706 4.52 0.44 18.623 3.929 14.694 3.462 1.612 1.850 73776 4.48 0.44 18.636 9999.000 9999.000 3.462 9999.000 9999.000 73916 4.35 0.43 18.677 9999.000 9999.000 3.461 9999.000 9999.000 73986 4.57 0.44 18.609 4.112 14.497 3.462 1.635 1.827 74056 4.66 0.44 18.582 9999.000 9999.000 3.463 9999.000 9999.000 74196 4.44 0.44 18.650 9999.000 9999.000 3.462 9999.000 9999.000 74266 4.26 0.48 18.704 3.792 14.912 3.460 1.599 1.861 74336 4.52 0.44 18.623 9999.000 9999.000 3.462 9999.000 9999.000 74476 4.66 0.44 18.582 9999.000 9999.000 3.463 9999.000 9999.000 74546 4.48 0.44 18.636 3.442 15.194 3.462 1.513 1.949 74616 4.31 0.43 18.690 9999.000 9999.000 3.461 9999.000 9999.000 74686 4.35 0.43 18.677 3.958 14.719 3.461 1.620 1.841 74756 4.44 0.44 18.650 9999.000 9999.000 3.462 9999.000 9999.000 74826 4.48 0.44 18.636 3.812 14.825 3.462 1.588 1.874 74896 4.57 0.44 18.609 9999.000 9999.000 3.462 9999.000 9999.000 75036 4.31 0.43 18.690 9999.000 9999.000 3.461 9999.000 9999.000 75106 5.01 0.45 18.475 2.838 15.637 3.464 1.400 2.064 75176 4.97 0.45 18.488 9999.000 9999.000 3.464 9999.000 9999.000 75246 5.05 0.45 18.462 1.859 16.602 3.464 1.200 2.264 75316 5.01 0.45 18.475 9999.000 9999.000 3.464 9999.000 9999.000 75386 5.19 0.45 18.422 1.550 16.872 3.464 1.124 2.340 75456 5.32 0.45 18.382 9999.000 9999.000 3.464 9999.000 9999.000 75596 5.10 0.45 18.448 9999.000 9999.000 3.464 9999.000 9999.000 75666 5.19 0.45 18.422 1.206 17.216 3.464 1.027 2.437 75736 5.19 0.45 18.422 9999.000 9999.000 3.464 9999.000 9999.000 75876 5.14 0.45 18.435 9999.000 9999.000 3.464 9999.000 9999.000 75946 5.37 0.45 18.369 1.559 16.810 3.463 1.111 2.352 76016 5.41 0.45 18.356 9999.000 9999.000 3.463 9999.000 9999.000 76156 4.97 0.45 18.488 9999.000 9999.000 3.464 9999.000 9999.000 76226 5.10 0.45 18.448 1.442 17.007 3.464 1.100 2.364 76296 5.41 0.45 18.356 9999.000 9999.000 3.463 9999.000 9999.000 76366 5.28 0.45 18.395 1.568 16.827 3.464 1.110 2.354 76436 5.23 0.45 18.409 9999.000 9999.000 3.464 9999.000 9999.000 76506 5.41 0.45 18.356 1.622 16.734 3.463 1.136 2.327 76576 5.01 0.45 18.475 9999.000 9999.000 3.464 9999.000 9999.000 76716 5.28 0.45 18.395 9999.000 9999.000 3.464 9999.000 9999.000 76786 5.51 0.46 18.329 1.726 16.603 3.463 1.146 2.317 76856 5.23 0.45 18.409 9999.000 9999.000 3.464 9999.000 9999.000 76926 5.46 0.46 18.342 1.482 16.860 3.463 1.092 2.371 76996 5.97 0.47 18.198 9999.000 9999.000 3.460 9999.000 9999.000 77066 5.10 0.45 18.448 1.449 16.999 3.464 1.090 2.374 77136 5.64 0.46 18.290 9999.000 9999.000 3.462 9999.000 9999.000 77276 5.51 0.46 18.329 9999.000 9999.000 3.463 9999.000 9999.000 77346 5.28 0.45 18.395 1.074 17.321 3.464 0.979 2.485 77416 5.74 0.46 18.264 9999.000 9999.000 3.462 9999.000 9999.000 77556 5.51 0.46 18.329 9999.000 9999.000 3.463 9999.000 9999.000 77626 5.37 0.45 18.369 0.776 17.593 3.463 0.870 2.593 77696 5.60 0.46 18.303 9999.000 9999.000 3.463 9999.000 9999.000 77836 5.60 0.46 18.303 9999.000 9999.000 3.463 9999.000 9999.000 77906 5.55 0.46 18.316 0.595 17.721 3.463 0.781 2.681 77976 5.41 0.45 18.356 9999.000 9999.000 3.463 9999.000 9999.000 78046 5.87 0.46 18.224 0.600 17.625 3.461 0.812 2.649 78116 5.19 0.45 18.422 9999.000 9999.000 3.464 9999.000 9999.000 78186 5.69 0.46 18.277 0.617 17.660 3.462 0.792 2.670 78256 5.74 0.46 18.264 9999.000 9999.000 3.462 9999.000 9999.000 78396 5.87 0.46 18.224 9999.000 9999.000 3.461 9999.000 9999.000 78466 5.69 0.46 18.277 0.503 17.774 3.462 0.716 2.746 78536 5.64 0.46 18.290 9999.000 9999.000 3.462 9999.000 9999.000 78676 6.06 0.47 18.172 9999.000 9999.000 3.459 9999.000 9999.000 78746 5.97 0.47 18.198 0.700 17.499 3.460 0.817 2.643 78816 5.51 0.46 18.329 9999.000 9999.000 3.463 9999.000 9999.000 78956 5.74 0.46 18.264 9999.000 9999.000 3.462 9999.000 9999.000 79026 5.97 0.47 18.198 0.422 17.776 3.460 0.649 2.811 79096 5.78 0.46 18.251 9999.000 9999.000 3.461 9999.000 9999.000 79166 5.97 0.47 18.198 0.600 17.598 3.460 0.753 2.707 79236 5.92 0.46 18.211 9999.000 9999.000 3.460 9999.000 9999.000 79306 5.41 0.45 18.356 1.107 17.248 3.463 0.980 2.484 79376 5.23 0.45 18.409 9999.000 9999.000 3.464 9999.000 9999.000 79516 5.19 0.45 18.422 9999.000 9999.000 3.464 9999.000 9999.000 79586 5.05 0.45 18.462 3.181 15.281 3.464 1.457 2.007 79656 4.35 0.43 18.677 9999.000 9999.000 3.461 9999.000 9999.000 79726 4.61 0.44 18.596 5.020 13.575 3.463 1.770 1.693 79796 2.68 0.45 19.180 9999.000 9999.000 3.434 9999.000 9999.000 79866 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79936 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 80076 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 80146 9999.00 9999.00 9999.000 16.887 9999.000 9999.000 3.101 9999.000 80216 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 80286 9999.00 9999.00 9999.000 18.659 9999.000 9999.000 3.237 9999.000 80356 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 80426 9999.00 9999.00 9999.000 19.369 9999.000 9999.000 3.454 9999.000 80496 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 80636 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000