45 1001 ELKINS, JAMES; MOORE, FRED; RAY, ERIC; DUTTON, GEOFF; WAMSLEY, PAULA U.S. DEPT OF COMMERCE, NOAA / CMDL / HALOCARBONS AND OTHER ATMOSPHERIC TRACE SPECIES GROUP LACE ACCENT 1 1 1999 09 24 2001 02 07 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) 22 The mean age (Age) of each sampled air mass was determined from the corresponding LACE 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 a dG = 0.0 . This term has never represented a delay from the surface to the tropopause. It contains spatial information about transport from the surface interhemispheric gradient. Total organic chlorine (CCly) was calculated from LACE in-situ measurements of CFC-11, CFC-12, CFC-113, CH3CCl3, and CCl4. Contributions to CCly from CH3Cl and HCFC-22 (not measured by LACE) were calculated from their correlations with tracers measured by LACE. Total organic bromine (CBry) was calculated from LACE in-situ measurements of halon-1211. Contributions to CBry from CH3Br, halon-2402, halon-1301, CH2Br2, and CH2BrCl (not measured by LACE) were calculated from their correlations with tracers measured by LACE 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 a calculated mean age spectrum from Hall & Plumb, 1994. Total inorganic chlorine (Cly) and total inorganic bromine (Bry) were calculated as TotalCl-CCly and TotalBr-CBry, respectively. Isentropic mixing voids these calculations below a potential temperature of 380K. 1 GMTs Age AgeERR TotalBr CBry Bry TotalCl CCly Cly 52725 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 52795 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 52865 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 52935 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53005 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53145 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53215 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53285 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53355 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53425 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53565 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53635 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53705 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53775 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53845 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 53985 1.17 0.14 19.452 19.146 0.306 3.405 3.262 0.143 54055 1.24 0.14 19.452 18.897 0.555 3.407 3.264 0.143 54125 1.39 0.14 19.447 18.044 1.403 3.411 3.173 0.239 54195 1.67 0.15 19.410 17.470 1.940 3.420 3.150 0.270 54265 1.96 0.15 19.343 17.181 2.162 3.428 3.107 0.321 54405 1.76 0.15 19.393 17.502 1.890 3.422 3.129 0.294 54475 1.79 0.15 19.386 17.554 1.832 3.423 3.138 0.286 54545 1.61 0.15 19.420 17.697 1.722 3.418 3.138 0.281 54615 1.70 0.15 19.403 17.259 2.145 3.421 3.117 0.304 54685 1.78 0.15 19.387 17.591 1.796 3.423 3.118 0.305 54825 1.53 0.15 19.432 17.452 1.980 3.416 3.112 0.304 54895 1.67 0.15 19.409 17.483 1.926 3.420 3.123 0.297 54965 1.55 0.15 19.429 17.443 1.986 3.417 3.115 0.302 55035 1.58 0.15 19.425 17.369 2.056 3.417 3.123 0.294 55105 1.57 0.15 19.426 17.432 1.994 3.417 3.123 0.294 55245 1.54 0.15 19.431 17.646 1.785 3.416 3.140 0.276 55314 1.61 0.15 19.421 17.322 2.099 3.418 3.124 0.295 55385 1.54 0.15 19.431 17.476 1.955 3.416 3.124 0.292 55455 1.51 0.15 19.435 17.634 1.802 3.415 3.151 0.264 55525 1.55 0.15 19.429 17.631 1.798 3.416 3.145 0.271 55665 1.52 0.15 19.434 17.663 1.770 3.416 3.148 0.268 55735 1.52 0.15 19.434 17.274 2.160 3.415 3.125 0.291 55805 1.63 0.15 19.418 16.995 2.423 3.419 3.096 0.322 55875 1.58 0.15 19.425 16.995 2.430 3.417 3.108 0.309 55945 1.83 0.15 19.377 16.946 2.431 3.424 3.093 0.331 56085 1.71 0.15 19.403 16.602 2.801 3.421 3.078 0.343 56155 1.77 0.15 19.390 16.090 3.300 3.423 3.026 0.396 56225 1.87 0.15 19.365 16.366 2.999 3.426 3.049 0.376 56365 1.57 0.15 19.426 16.688 2.737 3.417 3.084 0.333 56505 1.40 0.15 19.446 17.477 1.969 3.412 3.143 0.268 56575 1.66 0.15 19.411 17.397 2.015 3.420 3.127 0.292 56645 1.50 0.15 19.436 17.392 2.044 3.415 3.132 0.283 56715 1.59 0.15 19.424 17.299 2.125 3.417 3.127 0.291 56785 1.59 0.15 19.424 17.004 2.419 3.418 3.097 0.320 56925 1.53 0.15 19.432 17.144 2.288 3.416 3.123 0.293 56995 1.73 0.15 19.398 16.997 2.400 3.422 3.099 0.323 57065 1.73 0.15 19.398 16.776 2.622 3.422 3.076 0.346 57135 1.84 0.15 19.373 16.847 2.526 3.425 3.085 0.340 57205 1.59 0.15 19.424 16.783 2.641 3.418 3.084 0.334 57345 1.95 0.15 19.345 16.483 2.862 3.428 3.056 0.372 57415 1.94 0.15 19.348 16.313 3.035 3.427 3.039 0.388 57485 1.81 0.15 19.380 17.099 2.281 3.424 3.106 0.318 57555 1.65 0.15 19.413 17.330 2.083 3.420 3.115 0.304 57625 1.62 0.15 19.419 17.247 2.172 3.418 3.109 0.310 57765 1.57 0.15 19.426 17.826 1.600 3.417 3.163 0.254 57835 1.75 0.15 19.393 17.047 2.347 3.422 3.101 0.322 57905 1.50 0.15 19.436 17.137 2.300 3.415 3.107 0.308 57975 1.92 0.15 19.353 16.649 2.703 3.427 3.067 0.360 58045 1.84 0.15 19.375 16.695 2.680 3.425 3.067 0.358 58185 1.82 0.15 19.379 16.311 3.067 3.424 3.040 0.384 58255 2.04 0.15 19.321 16.102 3.219 3.430 3.021 0.409 58325 2.00 0.15 19.334 16.320 3.013 3.429 3.035 0.394 58395 2.02 0.15 19.327 16.456 2.871 3.429 3.053 0.376 58465 2.42 0.15 19.203 14.000 5.203 3.439 2.821 0.618 58605 2.29 0.15 19.247 14.667 4.580 3.436 2.895 0.541 58675 2.07 0.15 19.312 15.319 3.993 3.431 2.952 0.479 58745 2.07 0.15 19.314 15.571 3.743 3.431 2.974 0.457 58815 2.27 0.15 19.252 14.557 4.695 3.436 2.879 0.557 58885 2.14 0.15 19.292 15.211 4.081 3.433 2.937 0.496 59025 1.87 0.15 19.367 16.265 3.102 3.425 3.047 0.379 59095 2.00 0.15 19.333 15.769 3.564 3.429 2.998 0.431 59165 2.08 0.15 19.311 15.660 3.651 3.431 2.977 0.454 59235 2.12 0.15 19.299 15.495 3.804 3.432 2.970 0.462 59305 1.96 0.15 19.344 15.836 3.508 3.428 2.994 0.434 59445 2.03 0.15 19.324 15.779 3.545 3.430 2.996 0.433 59515 1.93 0.15 19.352 16.135 3.217 3.427 3.030 0.397 59585 1.87 0.15 19.367 16.170 3.197 3.425 3.036 0.389 59655 1.85 0.15 19.372 16.376 2.997 3.425 3.046 0.379 59725 1.85 0.15 19.370 16.492 2.878 3.425 3.056 0.370 59865 1.82 0.15 19.379 16.434 2.945 3.424 3.060 0.364 59935 1.87 0.15 19.367 16.354 3.013 3.425 3.042 0.384 60005 1.88 0.15 19.363 16.079 3.284 3.426 3.023 0.402 60075 2.00 0.15 19.333 16.006 3.328 3.429 3.015 0.414 60145 1.95 0.15 19.345 16.170 3.175 3.428 3.030 0.398 60285 1.91 0.15 19.356 15.954 3.402 3.427 3.025 0.402 60355 1.98 0.15 19.338 15.838 3.500 3.428 3.000 0.428 60425 2.09 0.15 19.306 15.871 3.435 3.431 3.001 0.431 60565 1.88 0.15 19.363 15.881 3.482 3.426 3.016 0.410 60705 1.81 0.15 19.380 15.899 3.481 3.424 3.011 0.413 60775 1.97 0.15 19.339 15.667 3.672 3.428 2.987 0.441 60845 2.09 0.15 19.307 15.610 3.697 3.431 2.978 0.454 60915 1.93 0.15 19.350 15.485 3.865 3.427 2.967 0.460 60985 2.17 0.15 19.283 15.354 3.929 3.433 2.962 0.472 61125 1.90 0.15 19.359 15.621 3.738 3.426 2.987 0.439 61195 2.05 0.15 19.318 15.368 3.950 3.430 2.968 0.463 61265 1.94 0.15 19.348 15.402 3.946 3.427 2.959 0.469 61335 2.02 0.15 19.327 15.262 4.065 3.429 2.954 0.476 61405 1.89 0.15 19.362 15.296 4.066 3.426 2.947 0.479 61545 1.95 0.15 19.345 15.503 3.842 3.428 2.978 0.450 61615 1.97 0.15 19.340 15.429 3.911 3.428 2.964 0.464 61685 2.05 0.15 19.318 15.532 3.787 3.430 2.975 0.456 61755 2.04 0.15 19.321 15.383 3.938 3.430 2.963 0.467 61825 1.90 0.15 19.359 15.332 4.027 3.426 2.957 0.470 61965 1.85 0.15 19.372 15.638 3.734 3.425 2.993 0.432 62035 2.02 0.15 19.326 15.721 3.605 3.430 2.990 0.440 62105 1.92 0.15 19.353 15.834 3.519 3.427 2.993 0.434 62175 2.02 0.15 19.328 15.399 3.929 3.429 2.963 0.466 62245 1.95 0.15 19.346 15.333 4.014 3.428 2.951 0.477 62385 1.97 0.15 19.341 15.341 4.001 3.428 2.967 0.461 62455 2.16 0.15 19.287 15.297 3.990 3.433 2.955 0.478 62525 1.97 0.15 19.339 15.358 3.981 3.428 2.956 0.472 62595 1.93 0.15 19.351 15.239 4.112 3.427 2.950 0.478 62665 1.98 0.15 19.339 15.243 4.096 3.428 2.951 0.477 62805 2.05 0.15 19.318 15.279 4.040 3.430 2.963 0.467 62875 2.00 0.15 19.331 15.220 4.112 3.429 2.950 0.479 62945 1.95 0.15 19.347 15.136 4.211 3.428 2.948 0.480 63015 2.13 0.15 19.294 15.167 4.127 3.432 2.943 0.489 63085 2.03 0.15 19.324 15.096 4.228 3.430 2.938 0.492 63225 1.97 0.15 19.340 15.003 4.337 3.428 2.945 0.483 63295 2.02 0.15 19.326 14.828 4.498 3.430 2.916 0.514 63365 2.11 0.15 19.301 14.757 4.544 3.432 2.912 0.520 63435 2.11 0.15 19.302 14.780 4.522 3.432 2.913 0.518 63505 2.03 0.15 19.323 14.657 4.666 3.430 2.906 0.523 63645 2.24 0.15 19.260 14.566 4.694 3.435 2.900 0.535 63715 1.96 0.15 19.345 14.779 4.566 3.428 2.920 0.508 63785 2.00 0.15 19.334 14.793 4.541 3.429 2.912 0.517 63855 2.20 0.15 19.274 14.668 4.605 3.434 2.905 0.529 63925 1.95 0.15 19.347 14.673 4.674 3.428 2.905 0.523 64065 1.94 0.15 19.350 14.803 4.547 3.427 2.922 0.505 64135 1.90 0.15 19.358 15.093 4.265 3.426 2.950 0.477 64205 1.89 0.15 19.361 14.966 4.396 3.426 2.933 0.493 64275 2.11 0.15 19.300 14.671 4.630 3.432 2.902 0.530 64345 1.90 0.15 19.359 14.982 4.377 3.426 2.928 0.498 64485 1.93 0.15 19.351 14.478 4.872 3.427 2.897 0.530 64555 2.18 0.15 19.279 14.541 4.738 3.434 2.890 0.544 64625 2.14 0.15 19.291 14.902 4.390 3.433 2.921 0.511 64765 2.11 0.15 19.302 14.746 4.556 3.432 2.924 0.508 64905 2.10 0.15 19.304 14.348 4.955 3.432 2.885 0.546 64975 2.14 0.15 19.293 14.422 4.871 3.432 2.886 0.546 65045 2.28 0.15 19.249 14.442 4.807 3.436 2.882 0.554 65115 2.09 0.15 19.307 14.848 4.459 3.431 2.917 0.514 65185 2.15 0.15 19.288 14.758 4.530 3.433 2.909 0.524 65325 2.17 0.15 19.283 14.620 4.664 3.433 2.904 0.529 65395 2.19 0.15 19.277 14.339 4.938 3.434 2.872 0.562 65465 2.09 0.15 19.307 14.127 5.180 3.431 2.854 0.577 65535 2.17 0.15 19.282 14.206 5.076 3.433 2.860 0.574 65605 2.46 0.15 19.191 14.134 5.057 3.440 2.852 0.588 65745 2.14 0.15 19.293 14.132 5.161 3.432 2.858 0.574 65815 2.42 0.15 19.203 14.248 4.955 3.439 2.863 0.576 65885 2.21 0.15 19.269 14.670 4.599 3.434 2.901 0.534 65955 2.37 0.15 19.218 14.591 4.627 3.438 2.891 0.547 66025 2.29 0.15 19.245 14.246 5.000 3.436 2.863 0.573 66165 2.21 0.15 19.271 14.312 4.958 3.434 2.884 0.551 66235 2.22 0.15 19.268 14.378 4.891 3.434 2.880 0.555 66305 2.19 0.15 19.277 14.465 4.812 3.434 2.878 0.556 66375 2.52 0.15 19.172 13.978 5.194 3.441 2.840 0.602 66445 2.21 0.15 19.270 14.148 5.122 3.434 2.860 0.574 66585 2.48 0.15 19.183 13.843 5.340 3.441 2.836 0.605 66655 2.01 0.15 19.331 15.116 4.215 3.429 2.943 0.486 66725 2.35 0.15 19.228 14.160 5.067 3.438 2.857 0.581 66795 2.02 0.15 19.326 14.883 4.443 3.430 2.920 0.510 66865 2.18 0.15 19.281 14.661 4.620 3.433 2.902 0.532 67005 1.28 0.14 19.452 17.431 2.021 3.408 3.138 0.270 67075 2.38 0.15 19.215 13.760 5.456 3.438 2.839 0.600 67145 2.08 0.15 19.309 14.477 4.832 3.431 2.895 0.536 67215 2.08 0.15 19.310 14.931 4.380 3.431 2.929 0.502 67285 1.66 0.15 19.411 15.614 3.797 3.420 2.987 0.432 67425 1.82 0.15 19.378 14.867 4.512 3.424 2.930 0.494 67495 1.84 0.15 19.375 14.961 4.413 3.425 2.930 0.495 67565 2.14 0.15 19.292 14.714 4.578 3.433 2.904 0.528 67635 1.93 0.15 19.351 15.235 4.116 3.427 2.946 0.481 67705 2.18 0.15 19.280 14.426 4.854 3.434 2.872 0.562 67845 1.83 0.15 19.377 14.692 4.685 3.424 2.911 0.513 67915 1.93 0.15 19.351 15.815 3.536 3.427 3.008 0.419 67985 1.29 0.14 19.452 17.589 1.863 3.408 3.152 0.256 68055 1.68 0.15 19.409 16.452 2.957 3.420 3.067 0.353 68125 1.25 0.14 19.452 17.446 2.006 3.407 3.144 0.263 68265 0.93 0.14 19.437 18.424 1.013 3.397 3.206 0.192 68335 1.03 0.14 19.445 18.552 0.893 3.400 3.213 0.188 68405 0.95 0.14 19.439 19.026 0.413 3.398 3.232 0.166 68475 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68545 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68685 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68755 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68825 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 68965 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69105 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69175 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69245 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69315 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69385 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69525 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69595 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69665 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69735 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69805 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69945 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70015 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000