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 06 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 This term no longer represents only a delay from the surface to the tropopause.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 76821 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76891 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76961 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77031 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77101 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77171 0.91 0.57 19.518 17.430 2.088 3.389 3.176 0.213 77241 0.95 0.57 19.509 9999.000 9999.000 3.390 9999.000 9999.000 77381 1.29 0.54 19.445 9999.000 9999.000 3.400 9999.000 9999.000 77451 2.27 0.52 19.272 11.737 7.534 3.427 2.679 0.748 77521 2.27 0.52 19.272 9999.000 9999.000 3.427 9999.000 9999.000 77591 1.84 0.55 19.357 13.402 5.954 3.415 2.856 0.559 77661 1.64 0.55 19.389 9999.000 9999.000 3.410 9999.000 9999.000 77731 2.80 0.53 19.139 11.976 7.163 3.439 2.696 0.743 77801 1.96 0.55 19.336 9999.000 9999.000 3.419 9999.000 9999.000 77941 1.72 0.55 19.376 9999.000 9999.000 3.412 9999.000 9999.000 78011 2.15 0.52 19.297 12.963 6.334 3.424 2.794 0.630 78081 2.04 0.51 19.321 9999.000 9999.000 3.421 9999.000 9999.000 78221 2.31 0.52 19.263 9999.000 9999.000 3.428 9999.000 9999.000 78291 2.55 0.53 19.204 11.344 7.860 3.434 2.638 0.796 78361 1.92 0.55 19.343 9999.000 9999.000 3.418 9999.000 9999.000 78501 2.51 0.52 19.215 9999.000 9999.000 3.433 9999.000 9999.000 78571 3.00 0.53 19.079 9.039 10.040 3.444 2.370 1.073 78641 1.96 0.51 19.336 9999.000 9999.000 3.419 9999.000 9999.000 78711 2.39 0.52 19.244 10.979 8.265 3.430 2.624 0.806 78781 2.23 0.52 19.280 9999.000 9999.000 3.426 9999.000 9999.000 78851 2.31 0.52 19.263 10.786 8.476 3.428 2.609 0.819 78921 2.23 0.52 19.280 9999.000 9999.000 3.426 9999.000 9999.000 79061 2.39 0.52 19.244 9999.000 9999.000 3.430 9999.000 9999.000 79131 2.88 0.53 19.115 9.015 10.100 3.441 2.394 1.047 79201 3.13 0.50 19.042 9999.000 9999.000 3.446 9999.000 9999.000 79271 3.42 0.50 18.951 6.103 12.849 3.451 1.981 1.470 79341 3.46 0.50 18.938 9999.000 9999.000 3.452 9999.000 9999.000 79411 3.67 0.51 18.871 4.993 13.878 3.455 1.829 1.626 79481 3.29 0.50 18.991 9999.000 9999.000 3.449 9999.000 9999.000 79621 3.71 0.51 18.858 9999.000 9999.000 3.456 9999.000 9999.000 79691 3.29 0.50 18.991 7.164 11.827 3.449 2.131 1.318 79761 3.13 0.50 19.042 9999.000 9999.000 3.446 9999.000 9999.000 79831 3.42 0.50 18.951 8.261 10.690 3.451 2.287 1.164 79901 3.04 0.54 19.067 9999.000 9999.000 3.444 9999.000 9999.000 79971 3.42 0.50 18.951 7.138 11.814 3.451 2.125 1.326 80041 3.42 0.50 18.951 9999.000 9999.000 3.451 9999.000 9999.000 80181 3.88 0.51 18.803 9999.000 9999.000 3.458 9999.000 9999.000 80251 3.84 0.51 18.817 5.838 12.979 3.457 1.942 1.515 80321 3.50 0.50 18.925 9999.000 9999.000 3.452 9999.000 9999.000 80391 3.93 0.51 18.790 5.159 13.630 3.458 1.863 1.595 80461 3.93 0.51 18.790 9999.000 9999.000 3.458 9999.000 9999.000 80531 3.59 0.51 18.898 5.575 13.323 3.454 1.903 1.551 80601 3.54 0.50 18.912 9999.000 9999.000 3.453 9999.000 9999.000 80741 3.17 0.50 19.029 9999.000 9999.000 3.447 9999.000 9999.000 80811 3.54 0.50 18.912 6.644 12.268 3.453 2.065 1.388 80881 3.09 0.50 19.055 9999.000 9999.000 3.445 9999.000 9999.000 81021 3.17 0.50 19.029 9999.000 9999.000 3.447 9999.000 9999.000 81091 3.17 0.50 19.029 7.690 11.340 3.447 2.237 1.210 81161 2.80 0.53 19.139 9999.000 9999.000 3.439 9999.000 9999.000 81301 3.21 0.50 19.017 9999.000 9999.000 3.448 9999.000 9999.000 81371 2.43 0.52 19.234 9.817 9.417 3.431 2.508 0.923 81441 2.51 0.52 19.215 9999.000 9999.000 3.433 9999.000 9999.000 81511 3.09 0.54 19.055 7.568 11.486 3.445 2.205 1.240 81581 3.09 0.54 19.055 9999.000 9999.000 3.445 9999.000 9999.000 81651 2.88 0.53 19.115 8.884 10.232 3.441 2.395 1.046 81721 2.88 0.53 19.115 9999.000 9999.000 3.441 9999.000 9999.000 81861 3.67 0.51 18.871 9999.000 9999.000 3.455 9999.000 9999.000 81931 3.67 0.51 18.871 6.455 12.416 3.455 2.048 1.407 82001 3.84 0.51 18.817 9999.000 9999.000 3.457 9999.000 9999.000 82141 3.54 0.50 18.912 9999.000 9999.000 3.453 9999.000 9999.000 82211 3.33 0.50 18.978 7.434 11.544 3.450 2.186 1.264 82281 3.04 0.54 19.067 9999.000 9999.000 3.444 9999.000 9999.000 82421 2.80 0.53 19.139 9999.000 9999.000 3.439 9999.000 9999.000 82491 3.09 0.54 19.055 8.622 10.432 3.445 2.342 1.103 82561 2.68 0.53 19.172 9999.000 9999.000 3.437 9999.000 9999.000 82631 2.88 0.53 19.115 9.940 9.175 3.441 2.517 0.924 82701 2.96 0.53 19.091 9999.000 9999.000 3.443 9999.000 9999.000 82771 2.92 0.53 19.104 9.299 9.805 3.442 2.451 0.991 82841 2.72 0.53 19.161 9999.000 9999.000 3.438 9999.000 9999.000 82981 2.64 0.53 19.183 9999.000 9999.000 3.436 9999.000 9999.000 83051 2.64 0.53 19.183 10.635 8.549 3.436 2.611 0.824 83121 2.68 0.53 19.172 9999.000 9999.000 3.437 9999.000 9999.000 83191 2.55 0.53 19.204 10.758 8.447 3.434 2.615 0.819 83261 2.51 0.52 19.215 9999.000 9999.000 3.433 9999.000 9999.000 83331 2.27 0.52 19.272 10.613 8.658 3.427 2.601 0.826 83401 2.43 0.52 19.234 9999.000 9999.000 3.431 9999.000 9999.000 83541 2.35 0.52 19.253 9999.000 9999.000 3.429 9999.000 9999.000 83611 1.96 0.51 19.336 11.149 8.186 3.419 2.678 0.741 83681 2.23 0.52 19.280 9999.000 9999.000 3.426 9999.000 9999.000 83821 2.43 0.52 19.234 9999.000 9999.000 3.431 9999.000 9999.000 83891 2.51 0.52 19.215 11.396 7.819 3.433 2.699 0.734 83961 2.27 0.52 19.272 9999.000 9999.000 3.427 9999.000 9999.000 84101 2.39 0.52 19.244 9999.000 9999.000 3.430 9999.000 9999.000 84171 2.19 0.52 19.289 11.686 7.603 3.425 2.738 0.687 84241 2.04 0.51 19.321 9999.000 9999.000 3.421 9999.000 9999.000 84311 1.80 0.55 19.363 12.093 7.271 3.414 2.780 0.634 84381 1.88 0.55 19.350 9999.000 9999.000 3.417 9999.000 9999.000 84451 1.84 0.55 19.357 12.348 7.009 3.415 2.810 0.605 84521 1.53 0.54 19.407 9999.000 9999.000 3.407 9999.000 9999.000 84661 1.96 0.55 19.336 9999.000 9999.000 3.419 9999.000 9999.000 84731 1.96 0.55 19.336 12.634 6.702 3.419 2.832 0.587 84801 1.88 0.55 19.350 9999.000 9999.000 3.417 9999.000 9999.000 84871 1.76 0.55 19.370 13.666 5.704 3.413 2.875 0.538 84941 1.56 0.54 19.401 9999.000 9999.000 3.408 9999.000 9999.000 85011 1.68 0.55 19.383 15.740 3.642 3.411 3.062 0.349 85081 1.14 0.54 19.471 9999.000 9999.000 3.395 9999.000 9999.000 85221 1.14 0.54 19.471 9999.000 9999.000 3.395 9999.000 9999.000 85291 1.18 0.54 19.464 17.631 1.834 3.396 3.178 0.218 85361 0.65 0.56 19.584 9999.000 9999.000 3.381 9999.000 9999.000 85501 1.18 0.54 19.464 9999.000 9999.000 3.396 9999.000 9999.000 85571 1.10 0.53 19.479 18.779 0.699 3.394 3.253 0.141 85641 1.10 0.53 19.479 9999.000 9999.000 3.394 9999.000 9999.000 85781 1.26 0.54 19.451 9999.000 9999.000 3.399 9999.000 9999.000 85851 1.49 0.54 19.413 19.033 0.380 3.405 3.257 0.149 85921 1.10 0.53 19.479 9999.000 9999.000 3.394 9999.000 9999.000 85991 0.95 0.53 19.509 18.664 0.845 3.390 3.245 0.145 86061 1.72 0.55 19.376 9999.000 9999.000 3.412 9999.000 9999.000 86131 1.76 0.55 19.370 15.005 4.364 3.413 2.979 0.434 86201 1.88 0.55 19.350 9999.000 9999.000 3.417 9999.000 9999.000 86341 2.23 0.52 19.280 9999.000 9999.000 3.426 9999.000 9999.000 86411 2.04 0.51 19.321 14.517 4.804 3.421 2.948 0.473 86481 2.27 0.52 19.272 9999.000 9999.000 3.427 9999.000 9999.000 86621 2.15 0.52 19.297 9999.000 9999.000 3.424 9999.000 9999.000 86691 2.27 0.52 19.272 12.423 6.849 3.427 2.793 0.635 86761 2.19 0.52 19.289 9999.000 9999.000 3.425 9999.000 9999.000 86901 2.43 0.52 19.234 9999.000 9999.000 3.431 9999.000 9999.000 86971 2.19 0.52 19.289 12.030 7.259 3.425 2.768 0.657 87041 2.23 0.52 19.280 9999.000 9999.000 3.426 9999.000 9999.000 87111 2.11 0.52 19.305 11.595 7.710 3.423 2.732 0.691 87181 2.47 0.52 19.225 9999.000 9999.000 3.432 9999.000 9999.000 87251 2.43 0.52 19.234 11.469 7.765 3.431 2.693 0.738 87321 2.43 0.52 19.234 9999.000 9999.000 3.431 9999.000 9999.000 87461 2.27 0.52 19.272 9999.000 9999.000 3.427 9999.000 9999.000 87531 2.35 0.52 19.253 11.050 8.203 3.429 2.654 0.775 87601 2.47 0.52 19.225 9999.000 9999.000 3.432 9999.000 9999.000 87671 2.55 0.53 19.204 10.620 8.584 3.434 2.616 0.818 87741 2.47 0.52 19.225 9999.000 9999.000 3.432 9999.000 9999.000 87811 2.64 0.53 19.183 11.185 7.998 3.436 2.665 0.771 87881 2.27 0.52 19.272 9999.000 9999.000 3.427 9999.000 9999.000 88021 2.88 0.53 19.115 9999.000 9999.000 3.441 9999.000 9999.000 88091 2.88 0.53 19.115 10.733 8.382 3.441 2.611 0.830 88161 2.64 0.53 19.183 9999.000 9999.000 3.436 9999.000 9999.000 88231 3.09 0.54 19.055 10.301 8.754 3.445 2.566 0.879 88301 2.80 0.53 19.139 9999.000 9999.000 3.439 9999.000 9999.000 88371 3.00 0.53 19.079 9.144 9.936 3.444 2.416 1.028 88441 2.60 0.53 19.194 9999.000 9999.000 3.435 9999.000 9999.000 88581 2.76 0.53 19.150 9999.000 9999.000 3.438 9999.000 9999.000 88651 2.96 0.53 19.091 8.695 10.396 3.443 2.362 1.080 88721 3.21 0.50 19.017 9999.000 9999.000 3.448 9999.000 9999.000 88791 3.50 0.50 18.925 7.815 11.110 3.452 2.252 1.200 88861 3.29 0.50 18.991 9999.000 9999.000 3.449 9999.000 9999.000 88931 3.67 0.51 18.871 7.338 11.534 3.455 2.161 1.294 89000 3.76 0.51 18.844 9999.000 9999.000 3.456 9999.000 9999.000 89141 3.04 0.54 19.067 9999.000 9999.000 3.444 9999.000 9999.000 89211 3.42 0.50 18.951 7.399 11.553 3.451 2.176 1.275 89281 3.25 0.50 19.004 9999.000 9999.000 3.448 9999.000 9999.000 89421 3.04 0.54 19.067 9999.000 9999.000 3.444 9999.000 9999.000 89491 3.21 0.50 19.017 8.472 10.544 3.448 2.327 1.120 89561 3.25 0.50 19.004 9999.000 9999.000 3.448 9999.000 9999.000 89701 2.92 0.53 19.104 9999.000 9999.000 3.442 9999.000 9999.000 89771 2.80 0.53 19.139 9.621 9.517 3.439 2.477 0.962 89841 3.09 0.54 19.055 9999.000 9999.000 3.445 9999.000 9999.000 89911 3.21 0.50 19.017 8.975 10.041 3.448 2.388 1.060 89981 2.96 0.53 19.091 9999.000 9999.000 3.443 9999.000 9999.000 90051 3.09 0.50 19.055 7.915 11.139 3.445 2.264 1.181 90121 2.80 0.53 19.139 9999.000 9999.000 3.439 9999.000 9999.000 90261 3.13 0.50 19.042 9999.000 9999.000 3.446 9999.000 9999.000 90331 3.09 0.50 19.055 8.372 10.682 3.445 2.321 1.124 90401 2.72 0.53 19.161 9999.000 9999.000 3.438 9999.000 9999.000 90471 2.96 0.53 19.091 8.510 10.581 3.443 2.321 1.122 90541 3.42 0.50 18.951 9999.000 9999.000 3.451 9999.000 9999.000 90611 3.63 0.51 18.885 6.183 12.701 3.454 1.995 1.460 90681 3.50 0.50 18.925 9999.000 9999.000 3.452 9999.000 9999.000 90821 3.84 0.51 18.817 9999.000 9999.000 3.457 9999.000 9999.000 90891 3.84 0.51 18.817 5.678 13.139 3.457 1.926 1.532 90961 3.63 0.51 18.885 9999.000 9999.000 3.454 9999.000 9999.000 91031 4.05 0.52 18.749 5.525 13.224 3.460 1.901 1.558 91101 3.50 0.50 18.925 9999.000 9999.000 3.452 9999.000 9999.000 91171 3.76 0.51 18.844 6.059 12.785 3.456 1.977 1.479 91241 3.88 0.51 18.803 9999.000 9999.000 3.458 9999.000 9999.000 91381 3.59 0.51 18.898 9999.000 9999.000 3.454 9999.000 9999.000 91451 3.63 0.51 18.885 6.571 12.314 3.454 2.049 1.405 91521 3.42 0.50 18.951 9999.000 9999.000 3.451 9999.000 9999.000 91591 3.76 0.51 18.844 6.366 12.478 3.456 2.034 1.423 91661 3.29 0.50 18.991 9999.000 9999.000 3.449 9999.000 9999.000 91731 3.88 0.51 18.803 5.946 12.858 3.458 1.973 1.485 91801 3.54 0.50 18.912 9999.000 9999.000 3.453 9999.000 9999.000 91941 4.01 0.51 18.762 9999.000 9999.000 3.459 9999.000 9999.000 92011 3.38 0.50 18.965 5.611 13.353 3.450 1.911 1.540 92081 3.63 0.51 18.885 9999.000 9999.000 3.454 9999.000 9999.000 92221 3.54 0.50 18.912 9999.000 9999.000 3.453 9999.000 9999.000 92291 3.67 0.51 18.871 6.153 12.718 3.455 1.987 1.468 92361 2.88 0.53 19.115 9999.000 9999.000 3.441 9999.000 9999.000 92501 3.38 0.50 18.965 9999.000 9999.000 3.450 9999.000 9999.000 92571 3.33 0.50 18.978 7.194 11.784 3.450 2.143 1.307 92641 2.84 0.53 19.127 9999.000 9999.000 3.440 9999.000 9999.000 92711 3.63 0.51 18.885 5.905 12.980 3.454 1.964 1.490 92781 3.63 0.51 18.885 9999.000 9999.000 3.454 9999.000 9999.000 92851 4.01 0.51 18.762 5.179 13.584 3.459 1.841 1.618 92921 3.71 0.51 18.858 9999.000 9999.000 3.456 9999.000 9999.000 93061 3.46 0.50 18.938 9999.000 9999.000 3.452 9999.000 9999.000 93131 3.13 0.50 19.042 8.277 10.765 3.446 2.277 1.169 93201 2.88 0.53 19.115 9999.000 9999.000 3.441 9999.000 9999.000 93341 0.99 0.53 19.501 9999.000 9999.000 3.391 9999.000 9999.000 93411 1.10 0.53 19.479 18.165 1.314 3.394 3.209 0.185 93481 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 93621 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 93691 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 93761 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 93831 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 93901 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 93971 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 94041 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 94181 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 94251 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000