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 09 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 This term no longer represents only a delay from the surface to the tropopause.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 380 K. 1 GMTs Age AgeERR TotalBr CBry Bry TotalCl CCly Cly 55300 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55370 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55440 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55510 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55580 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55650 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55720 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55860 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 55930 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 56000 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 56070 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 56140 1.65 0.55 19.392 9999.000 9999.000 3.410 9999.000 9999.000 56210 2.44 0.52 19.237 12.554 6.682 3.431 2.749 0.682 56280 2.28 0.52 19.274 9999.000 9999.000 3.427 9999.000 9999.000 56420 2.36 0.52 19.256 9999.000 9999.000 3.429 9999.000 9999.000 56490 2.44 0.52 19.237 12.081 7.155 3.431 2.716 0.715 56560 2.56 0.53 19.207 9999.000 9999.000 3.434 9999.000 9999.000 56700 3.64 0.51 18.887 9999.000 9999.000 3.454 9999.000 9999.000 56770 3.81 0.51 18.833 6.920 11.913 3.457 2.105 1.351 56840 3.64 0.51 18.887 9999.000 9999.000 3.454 9999.000 9999.000 56980 4.06 0.52 18.752 9999.000 9999.000 3.460 9999.000 9999.000 57050 4.02 0.51 18.765 4.723 14.042 3.459 1.776 1.683 57120 3.81 0.51 18.833 9999.000 9999.000 3.457 9999.000 9999.000 57190 4.06 0.52 18.752 4.599 14.152 3.460 1.752 1.707 57260 4.06 0.52 18.752 9999.000 9999.000 3.460 9999.000 9999.000 57330 3.55 0.50 18.914 4.813 14.101 3.453 1.792 1.661 57400 4.06 0.52 18.752 9999.000 9999.000 3.460 9999.000 9999.000 57540 3.85 0.51 18.820 9999.000 9999.000 3.457 9999.000 9999.000 57610 3.76 0.51 18.847 4.531 14.316 3.456 1.743 1.713 57680 4.02 0.51 18.765 9999.000 9999.000 3.459 9999.000 9999.000 57750 3.72 0.51 18.860 4.422 14.438 3.455 1.734 1.721 57820 3.81 0.51 18.833 9999.000 9999.000 3.457 9999.000 9999.000 57890 3.98 0.51 18.779 4.398 14.381 3.459 1.737 1.722 57960 3.64 0.51 18.887 9999.000 9999.000 3.454 9999.000 9999.000 58100 3.98 0.51 18.779 9999.000 9999.000 3.459 9999.000 9999.000 58170 3.76 0.51 18.847 4.383 14.464 3.456 1.731 1.725 58240 3.89 0.51 18.806 9999.000 9999.000 3.458 9999.000 9999.000 58310 3.76 0.51 18.847 4.467 14.380 3.456 1.770 1.686 58380 3.81 0.51 18.833 9999.000 9999.000 3.457 9999.000 9999.000 58450 3.51 0.50 18.928 4.758 14.170 3.452 1.807 1.645 58520 4.06 0.52 18.752 9999.000 9999.000 3.460 9999.000 9999.000 58660 3.89 0.51 18.806 9999.000 9999.000 3.458 9999.000 9999.000 58730 4.06 0.52 18.752 3.967 14.785 3.460 1.677 1.783 58800 3.68 0.51 18.874 9999.000 9999.000 3.455 9999.000 9999.000 58870 3.85 0.51 18.820 4.401 14.418 3.457 1.749 1.708 58940 3.72 0.51 18.860 9999.000 9999.000 3.455 9999.000 9999.000 59010 3.93 0.51 18.792 3.750 15.042 3.458 1.654 1.804 59080 3.64 0.51 18.887 9999.000 9999.000 3.454 9999.000 9999.000 59220 3.93 0.51 18.792 9999.000 9999.000 3.458 9999.000 9999.000 59290 3.93 0.51 18.792 3.891 14.902 3.458 1.658 1.800 59360 3.89 0.51 18.806 9999.000 9999.000 3.458 9999.000 9999.000 59500 3.68 0.51 18.874 9999.000 9999.000 3.455 9999.000 9999.000 59570 3.93 0.51 18.792 3.868 14.925 3.458 1.666 1.792 59640 3.51 0.50 18.928 9999.000 9999.000 3.452 9999.000 9999.000 59780 3.89 0.51 18.806 9999.000 9999.000 3.458 9999.000 9999.000 59850 3.72 0.51 18.860 3.793 15.067 3.455 1.655 1.801 59920 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 59990 4.02 0.51 18.765 3.857 14.908 3.459 1.664 1.795 60060 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 60130 4.28 0.52 18.683 3.670 15.013 3.461 1.624 1.837 60200 3.76 0.51 18.847 9999.000 9999.000 3.456 9999.000 9999.000 60340 3.89 0.51 18.806 9999.000 9999.000 3.458 9999.000 9999.000 60410 4.37 0.52 18.656 3.972 14.684 3.462 1.671 1.791 60480 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 60620 3.72 0.51 18.860 9999.000 9999.000 3.455 9999.000 9999.000 60690 3.98 0.51 18.779 3.962 14.816 3.459 1.667 1.791 60760 4.23 0.52 18.697 9999.000 9999.000 3.461 9999.000 9999.000 60900 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 60970 4.23 0.52 18.697 3.545 15.152 3.461 1.605 1.856 61040 3.93 0.51 18.792 9999.000 9999.000 3.458 9999.000 9999.000 61110 4.41 0.52 18.642 3.586 15.057 3.462 1.617 1.846 61180 3.93 0.51 18.792 9999.000 9999.000 3.458 9999.000 9999.000 61250 3.98 0.51 18.779 3.925 14.854 3.459 1.666 1.792 61320 4.23 0.52 18.697 9999.000 9999.000 3.461 9999.000 9999.000 61460 4.06 0.52 18.752 9999.000 9999.000 3.460 9999.000 9999.000 61530 4.11 0.52 18.738 4.251 14.486 3.460 1.720 1.740 61600 3.93 0.51 18.792 9999.000 9999.000 3.458 9999.000 9999.000 61670 4.11 0.52 18.738 3.271 15.467 3.460 1.593 1.867 61740 3.81 0.51 18.833 9999.000 9999.000 3.457 9999.000 9999.000 61810 4.11 0.52 18.738 3.013 15.725 3.460 1.552 1.908 61880 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 62020 4.19 0.52 18.711 9999.000 9999.000 3.461 9999.000 9999.000 62090 4.15 0.52 18.724 2.930 15.794 3.460 1.529 1.932 62160 3.89 0.51 18.806 9999.000 9999.000 3.458 9999.000 9999.000 62300 4.32 0.52 18.670 9999.000 9999.000 3.462 9999.000 9999.000 62370 3.98 0.51 18.779 2.693 16.086 3.459 1.488 1.971 62440 4.32 0.52 18.670 9999.000 9999.000 3.462 9999.000 9999.000 62580 4.02 0.51 18.765 9999.000 9999.000 3.459 9999.000 9999.000 62650 3.98 0.51 18.779 2.653 16.126 3.459 1.487 1.971 62720 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 62790 4.02 0.51 18.765 2.477 16.288 3.459 1.465 1.994 62860 4.58 0.53 18.588 9999.000 9999.000 3.463 9999.000 9999.000 62930 4.41 0.52 18.642 2.332 16.310 3.462 1.423 2.040 63000 4.41 0.52 18.642 9999.000 9999.000 3.462 9999.000 9999.000 63140 3.93 0.51 18.792 9999.000 9999.000 3.458 9999.000 9999.000 63210 4.15 0.52 18.724 2.274 16.450 3.460 1.410 2.050 63280 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 63350 4.28 0.52 18.683 2.208 16.476 3.461 1.393 2.069 63420 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 63490 3.64 0.51 18.887 2.210 16.678 3.454 1.397 2.057 63560 3.98 0.51 18.779 9999.000 9999.000 3.459 9999.000 9999.000 63700 3.72 0.51 18.860 9999.000 9999.000 3.455 9999.000 9999.000 63770 3.85 0.51 18.820 2.161 16.658 3.457 1.391 2.066 63840 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 63980 4.06 0.52 18.752 9999.000 9999.000 3.460 9999.000 9999.000 64050 3.72 0.51 18.860 2.315 16.546 3.455 1.408 2.047 64120 3.85 0.51 18.820 9999.000 9999.000 3.457 9999.000 9999.000 64260 3.98 0.51 18.779 9999.000 9999.000 3.459 9999.000 9999.000 64330 3.85 0.51 18.820 2.784 16.036 3.457 1.493 1.964 64400 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 64470 3.76 0.51 18.847 3.211 15.636 3.456 1.568 1.888 64540 3.81 0.51 18.833 9999.000 9999.000 3.457 9999.000 9999.000 64610 4.15 0.52 18.724 3.111 15.613 3.460 1.560 1.900 64680 4.19 0.52 18.711 9999.000 9999.000 3.461 9999.000 9999.000 64820 4.02 0.51 18.765 9999.000 9999.000 3.459 9999.000 9999.000 64890 4.50 0.53 18.615 2.734 15.881 3.463 1.496 1.967 64960 4.15 0.52 18.724 9999.000 9999.000 3.460 9999.000 9999.000 65100 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 65170 4.19 0.52 18.711 2.780 15.931 3.461 1.502 1.959 65240 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 65380 4.02 0.51 18.765 9999.000 9999.000 3.459 9999.000 9999.000 65450 3.81 0.51 18.833 2.931 15.902 3.457 1.526 1.931 65520 4.06 0.52 18.752 9999.000 9999.000 3.460 9999.000 9999.000 65590 4.19 0.52 18.711 3.051 15.659 3.461 1.540 1.921 65660 3.89 0.51 18.806 9999.000 9999.000 3.458 9999.000 9999.000 65730 4.19 0.52 18.711 3.002 15.709 3.461 1.526 1.935 65800 3.93 0.51 18.792 9999.000 9999.000 3.458 9999.000 9999.000 65940 4.02 0.51 18.765 9999.000 9999.000 3.459 9999.000 9999.000 66010 4.19 0.52 18.711 3.134 15.576 3.461 1.546 1.914 66080 4.15 0.52 18.724 9999.000 9999.000 3.460 9999.000 9999.000 66150 3.89 0.51 18.806 2.876 15.930 3.458 1.517 1.941 66220 4.41 0.52 18.642 9999.000 9999.000 3.462 9999.000 9999.000 66290 4.41 0.52 18.642 2.711 15.931 3.462 1.490 1.973 66360 4.32 0.52 18.670 9999.000 9999.000 3.462 9999.000 9999.000 66500 4.32 0.52 18.670 9999.000 9999.000 3.462 9999.000 9999.000 66570 4.32 0.52 18.670 2.571 16.099 3.462 1.459 2.003 66640 4.32 0.52 18.670 9999.000 9999.000 3.462 9999.000 9999.000 66710 3.89 0.51 18.806 2.436 16.371 3.458 1.431 2.026 66780 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 66850 4.06 0.52 18.752 2.421 16.330 3.460 1.442 2.017 66920 3.98 0.51 18.779 9999.000 9999.000 3.459 9999.000 9999.000 67060 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 67130 3.98 0.51 18.779 2.374 16.405 3.459 1.432 2.027 67200 4.19 0.52 18.711 9999.000 9999.000 3.461 9999.000 9999.000 67270 4.19 0.52 18.711 2.412 16.298 3.461 1.435 2.026 67340 4.32 0.52 18.670 9999.000 9999.000 3.462 9999.000 9999.000 67410 4.15 0.52 18.724 2.375 16.349 3.460 1.435 2.026 67480 3.89 0.51 18.806 9999.000 9999.000 3.458 9999.000 9999.000 67620 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 67690 4.37 0.52 18.656 2.979 15.677 3.462 1.530 1.932 67760 4.19 0.52 18.711 9999.000 9999.000 3.461 9999.000 9999.000 67900 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 67970 4.32 0.52 18.670 2.797 15.872 3.462 1.496 1.965 68040 4.23 0.52 18.697 9999.000 9999.000 3.461 9999.000 9999.000 68180 4.02 0.51 18.765 9999.000 9999.000 3.459 9999.000 9999.000 68250 3.85 0.51 18.820 2.935 15.885 3.457 1.507 1.950 68320 4.58 0.53 18.588 9999.000 9999.000 3.463 9999.000 9999.000 68390 4.28 0.52 18.683 3.462 15.221 3.461 1.590 1.871 68460 4.41 0.52 18.642 9999.000 9999.000 3.462 9999.000 9999.000 68530 4.23 0.52 18.697 3.629 15.068 3.461 1.627 1.835 68600 4.58 0.53 18.588 9999.000 9999.000 3.463 9999.000 9999.000 68740 4.02 0.51 18.765 9999.000 9999.000 3.459 9999.000 9999.000 68810 4.28 0.52 18.683 3.603 15.081 3.461 1.631 1.831 68880 3.93 0.51 18.792 9999.000 9999.000 3.458 9999.000 9999.000 68950 4.32 0.52 18.670 2.902 15.768 3.462 1.514 1.948 69020 3.89 0.51 18.806 9999.000 9999.000 3.458 9999.000 9999.000 69090 4.23 0.52 18.697 3.627 15.070 3.461 1.629 1.832 69160 4.45 0.52 18.629 9999.000 9999.000 3.463 9999.000 9999.000 69300 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 69370 4.28 0.52 18.683 3.608 15.075 3.461 1.615 1.846 69440 3.93 0.51 18.792 9999.000 9999.000 3.458 9999.000 9999.000 69510 3.98 0.51 18.779 3.523 15.256 3.459 1.610 1.848 69580 4.06 0.52 18.752 9999.000 9999.000 3.460 9999.000 9999.000 69650 4.06 0.52 18.752 3.381 15.370 3.460 1.573 1.886 69720 4.23 0.52 18.697 9999.000 9999.000 3.461 9999.000 9999.000 69860 4.02 0.51 18.765 9999.000 9999.000 3.459 9999.000 9999.000 69930 4.67 0.53 18.561 3.111 15.450 3.464 1.538 1.926 70000 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 70070 4.06 0.52 18.752 3.044 15.708 3.460 1.534 1.925 70140 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 70210 4.06 0.52 18.752 3.151 15.601 3.460 1.554 1.905 70280 4.37 0.52 18.656 9999.000 9999.000 3.462 9999.000 9999.000 70420 4.15 0.52 18.724 9999.000 9999.000 3.460 9999.000 9999.000 70490 4.63 0.53 18.574 3.112 15.462 3.464 1.545 1.919 70560 4.37 0.52 18.656 9999.000 9999.000 3.462 9999.000 9999.000 70700 3.98 0.51 18.779 9999.000 9999.000 3.459 9999.000 9999.000 70770 4.41 0.52 18.642 3.159 15.484 3.462 1.559 1.904 70840 4.23 0.52 18.697 9999.000 9999.000 3.461 9999.000 9999.000 70980 4.28 0.52 18.683 9999.000 9999.000 3.461 9999.000 9999.000 71050 4.19 0.52 18.711 3.247 15.463 3.461 1.579 1.882 71120 4.19 0.52 18.711 9999.000 9999.000 3.461 9999.000 9999.000 71190 4.06 0.52 18.752 3.409 15.342 3.460 1.597 1.863 71260 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 71330 4.15 0.52 18.724 3.630 15.094 3.460 1.633 1.828 71400 4.06 0.52 18.752 9999.000 9999.000 3.460 9999.000 9999.000 71540 3.98 0.51 18.779 9999.000 9999.000 3.459 9999.000 9999.000 71610 4.06 0.52 18.752 3.805 14.946 3.460 1.691 1.768 71680 3.98 0.51 18.779 9999.000 9999.000 3.459 9999.000 9999.000 71820 4.02 0.51 18.765 9999.000 9999.000 3.459 9999.000 9999.000 71890 4.15 0.52 18.724 3.756 14.969 3.460 1.673 1.788 71960 4.37 0.52 18.656 9999.000 9999.000 3.462 9999.000 9999.000 72100 4.32 0.52 18.670 9999.000 9999.000 3.462 9999.000 9999.000 72170 4.23 0.52 18.697 3.011 15.686 3.461 1.566 1.895 72240 4.45 0.52 18.629 9999.000 9999.000 3.463 9999.000 9999.000 72310 4.11 0.52 18.738 2.988 15.750 3.460 1.553 1.907 72380 4.11 0.52 18.738 9999.000 9999.000 3.460 9999.000 9999.000 72450 3.93 0.51 18.792 5.380 13.412 3.458 1.908 1.550 72520 3.51 0.50 18.928 9999.000 9999.000 3.452 9999.000 9999.000 72660 2.85 0.53 19.130 9999.000 9999.000 3.440 9999.000 9999.000 72730 1.89 0.55 19.352 15.298 4.054 3.417 3.012 0.405 72800 1.65 0.55 19.392 9999.000 9999.000 3.410 9999.000 9999.000 72870 1.77 0.55 19.372 15.951 3.421 3.413 3.071 0.342 72940 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73010 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73080 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73220 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73290 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73360 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000