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 1999 12 11 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 This term no longer represents only a delay from the surface to the tropopause.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 73372 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73442 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73512 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73582 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73652 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73722 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73792 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73932 1.88 0.55 19.347 9999.000 9999.000 3.419 9999.000 9999.000 74002 1.33 0.54 19.424 16.151 3.273 3.403 3.062 0.341 74072 1.72 0.55 19.372 9999.000 9999.000 3.414 9999.000 9999.000 74142 1.53 0.55 19.399 16.183 3.217 3.409 3.072 0.337 74212 2.04 0.56 19.318 9999.000 9999.000 3.423 9999.000 9999.000 74282 2.24 0.56 19.275 12.692 6.583 3.428 2.779 0.650 74352 2.12 0.56 19.301 9999.000 9999.000 3.425 9999.000 9999.000 74492 2.48 0.53 19.216 9999.000 9999.000 3.434 9999.000 9999.000 74562 2.36 0.52 19.247 10.822 8.425 3.431 2.592 0.840 74632 2.89 0.53 19.099 9999.000 9999.000 3.443 9999.000 9999.000 74772 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74842 2.81 0.53 19.124 9.749 9.375 3.442 2.458 0.984 74912 2.93 0.53 19.087 9999.000 9999.000 3.444 9999.000 9999.000 75052 2.97 0.54 19.074 9999.000 9999.000 3.445 9999.000 9999.000 75122 2.97 0.54 19.074 8.969 10.105 3.445 2.365 1.080 75192 3.18 0.54 19.009 9999.000 9999.000 3.449 9999.000 9999.000 75262 3.26 0.54 18.982 7.178 11.805 3.450 2.138 1.312 75332 3.39 0.54 18.942 9999.000 9999.000 3.452 9999.000 9999.000 75402 3.39 0.54 18.942 7.663 11.279 3.452 2.194 1.258 75472 3.22 0.54 18.996 9999.000 9999.000 3.450 9999.000 9999.000 75612 3.81 0.51 18.805 9999.000 9999.000 3.458 9999.000 9999.000 75682 4.11 0.52 18.709 5.610 13.098 3.461 1.883 1.578 75752 3.55 0.51 18.887 9999.000 9999.000 3.455 9999.000 9999.000 75822 3.68 0.51 18.846 6.289 12.557 3.457 1.989 1.468 75892 3.64 0.51 18.860 9999.000 9999.000 3.456 9999.000 9999.000 75962 3.43 0.55 18.928 6.868 12.060 3.453 2.088 1.365 76032 3.68 0.51 18.846 9999.000 9999.000 3.457 9999.000 9999.000 76172 3.72 0.51 18.833 9999.000 9999.000 3.457 9999.000 9999.000 76242 4.02 0.52 18.736 6.435 12.301 3.461 2.014 1.447 76312 3.64 0.51 18.860 9999.000 9999.000 3.456 9999.000 9999.000 76382 3.68 0.51 18.846 6.515 12.332 3.457 2.032 1.424 76452 3.51 0.51 18.901 9999.000 9999.000 3.454 9999.000 9999.000 76522 3.22 0.54 18.996 11.037 7.958 3.450 2.606 0.844 76592 2.60 0.53 19.183 9999.000 9999.000 3.437 9999.000 9999.000 76732 2.64 0.53 19.171 9999.000 9999.000 3.438 9999.000 9999.000 76802 2.24 0.56 19.275 13.833 5.442 3.428 2.883 0.545 76872 2.04 0.56 19.318 9999.000 9999.000 3.423 9999.000 9999.000 76942 1.76 0.55 19.366 16.250 3.117 3.416 3.091 0.325 77012 1.14 0.58 19.450 9999.000 9999.000 3.397 9999.000 9999.000 77082 0.80 0.57 19.509 20.228 -0.719 3.387 3.342 0.045 77152 0.87 0.57 19.494 9999.000 9999.000 3.389 9999.000 9999.000 77292 1.53 0.55 19.399 9999.000 9999.000 3.409 9999.000 9999.000 77362 1.72 0.55 19.372 16.065 3.307 3.414 3.076 0.338 77432 1.88 0.55 19.347 9999.000 9999.000 3.419 9999.000 9999.000 77572 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 77642 1.53 0.55 19.399 16.291 3.109 3.409 3.089 0.320 77712 1.49 0.54 19.404 9999.000 9999.000 3.408 9999.000 9999.000 77852 1.57 0.55 19.394 9999.000 9999.000 3.410 9999.000 9999.000 77922 1.92 0.55 19.340 15.994 3.346 3.420 3.070 0.350 77992 2.00 0.56 19.325 9999.000 9999.000 3.422 9999.000 9999.000 78062 1.22 0.54 19.439 16.034 3.405 3.400 3.081 0.318 78132 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 78202 1.65 0.55 19.383 16.289 3.094 3.412 3.098 0.314 78272 2.08 0.56 19.310 9999.000 9999.000 3.424 9999.000 9999.000 78412 2.16 0.56 19.293 9999.000 9999.000 3.426 9999.000 9999.000 78482 1.53 0.55 19.399 16.217 3.182 3.409 3.094 0.314 78552 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 78692 1.76 0.55 19.366 9999.000 9999.000 3.416 9999.000 9999.000 78762 1.65 0.55 19.383 16.637 2.747 3.412 3.159 0.254 78832 1.76 0.55 19.366 9999.000 9999.000 3.416 9999.000 9999.000 78972 1.80 0.55 19.360 9999.000 9999.000 3.417 9999.000 9999.000 79042 1.45 0.54 19.409 16.292 3.118 3.407 3.097 0.309 79112 1.65 0.55 19.383 9999.000 9999.000 3.412 9999.000 9999.000 79182 1.65 0.55 19.383 16.320 3.064 3.412 3.110 0.303 79252 1.80 0.55 19.360 9999.000 9999.000 3.417 9999.000 9999.000 79322 1.72 0.55 19.372 16.330 3.043 3.414 3.095 0.319 79392 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 79532 2.12 0.56 19.301 9999.000 9999.000 3.425 9999.000 9999.000 79602 1.76 0.55 19.366 15.923 3.443 3.416 3.076 0.339 79672 1.96 0.55 19.333 9999.000 9999.000 3.421 9999.000 9999.000 79742 1.80 0.55 19.360 16.075 3.285 3.417 3.084 0.333 79812 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 79882 1.57 0.55 19.394 15.803 3.591 3.410 3.071 0.339 79952 1.92 0.55 19.340 9999.000 9999.000 3.420 9999.000 9999.000 80092 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 80162 1.26 0.54 19.434 18.253 1.182 3.401 3.229 0.172 80232 0.84 0.57 19.501 9999.000 9999.000 3.388 9999.000 9999.000 80372 1.57 0.55 19.394 9999.000 9999.000 3.410 9999.000 9999.000 80442 1.53 0.55 19.399 16.732 2.667 3.409 3.134 0.275 80512 1.80 0.55 19.360 9999.000 9999.000 3.417 9999.000 9999.000 80652 1.84 0.55 19.353 9999.000 9999.000 3.418 9999.000 9999.000 80722 1.72 0.55 19.372 15.713 3.659 3.414 3.063 0.351 80792 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 80862 1.72 0.55 19.372 16.258 3.114 3.414 3.094 0.321 80932 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 81002 1.53 0.55 19.399 16.280 3.120 3.409 3.103 0.306 81072 2.00 0.56 19.325 9999.000 9999.000 3.422 9999.000 9999.000 81212 1.88 0.55 19.347 9999.000 9999.000 3.419 9999.000 9999.000 81282 2.00 0.56 19.325 16.145 3.180 3.422 3.085 0.337 81352 1.72 0.55 19.372 9999.000 9999.000 3.414 9999.000 9999.000 81422 1.84 0.55 19.353 16.054 3.299 3.418 3.092 0.326 81492 1.72 0.55 19.372 9999.000 9999.000 3.414 9999.000 9999.000 81562 1.96 0.55 19.333 16.219 3.114 3.421 3.100 0.321 81632 1.53 0.55 19.399 9999.000 9999.000 3.409 9999.000 9999.000 81772 1.76 0.55 19.366 9999.000 9999.000 3.416 9999.000 9999.000 81842 1.68 0.55 19.378 16.064 3.314 3.413 3.092 0.322 81912 1.84 0.55 19.353 9999.000 9999.000 3.418 9999.000 9999.000 82052 1.80 0.55 19.360 9999.000 9999.000 3.417 9999.000 9999.000 82122 1.80 0.55 19.360 15.933 3.427 3.417 3.083 0.334 82192 1.68 0.55 19.378 9999.000 9999.000 3.413 9999.000 9999.000 82332 2.00 0.56 19.325 9999.000 9999.000 3.422 9999.000 9999.000 82402 1.96 0.55 19.333 16.074 3.258 3.421 3.081 0.340 82472 1.53 0.55 19.399 9999.000 9999.000 3.409 9999.000 9999.000 82542 1.68 0.55 19.378 15.963 3.415 3.413 3.079 0.334 82612 1.96 0.55 19.333 9999.000 9999.000 3.421 9999.000 9999.000 82682 1.65 0.55 19.383 15.903 3.480 3.412 3.075 0.337 82752 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 82892 1.65 0.55 19.383 9999.000 9999.000 3.412 9999.000 9999.000 82962 1.76 0.55 19.366 15.903 3.463 3.416 3.072 0.343 83032 1.65 0.55 19.383 9999.000 9999.000 3.412 9999.000 9999.000 83172 1.76 0.55 19.366 9999.000 9999.000 3.416 9999.000 9999.000 83242 1.88 0.55 19.347 16.034 3.312 3.419 3.072 0.347 83312 1.76 0.55 19.366 9999.000 9999.000 3.416 9999.000 9999.000 83452 1.65 0.55 19.383 9999.000 9999.000 3.412 9999.000 9999.000 83522 1.88 0.55 19.347 15.744 3.603 3.419 3.048 0.371 83592 1.68 0.55 19.378 9999.000 9999.000 3.413 9999.000 9999.000 83662 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 83732 1.45 0.54 19.409 9999.000 9999.000 3.407 9999.000 9999.000 83802 1.76 0.55 19.366 15.555 3.811 3.416 3.046 0.370 83872 1.84 0.55 19.353 9999.000 9999.000 3.418 9999.000 9999.000 84012 1.53 0.55 19.399 9999.000 9999.000 3.409 9999.000 9999.000 84082 1.68 0.55 19.378 16.166 3.212 3.413 3.095 0.318 84152 1.72 0.55 19.372 9999.000 9999.000 3.414 9999.000 9999.000 84222 1.45 0.54 19.409 15.803 3.607 3.407 3.063 0.343 84292 1.57 0.55 19.394 9999.000 9999.000 3.410 9999.000 9999.000 84362 1.84 0.55 19.353 15.803 3.551 3.418 3.065 0.353 84432 1.61 0.55 19.389 9999.000 9999.000 3.411 9999.000 9999.000 84572 1.96 0.55 19.333 9999.000 9999.000 3.421 9999.000 9999.000 84642 1.49 0.54 19.404 16.312 3.093 3.408 3.094 0.314 84712 1.68 0.55 19.378 9999.000 9999.000 3.413 9999.000 9999.000 84782 1.53 0.55 19.399 16.312 3.088 3.409 3.103 0.306 84852 1.68 0.55 19.378 9999.000 9999.000 3.413 9999.000 9999.000 84922 1.61 0.55 19.389 16.477 2.912 3.411 3.114 0.297 84992 1.53 0.55 19.399 9999.000 9999.000 3.409 9999.000 9999.000 85132 1.45 0.54 19.409 9999.000 9999.000 3.407 9999.000 9999.000 85202 1.61 0.55 19.389 16.447 2.942 3.411 3.112 0.299 85272 1.65 0.55 19.383 9999.000 9999.000 3.412 9999.000 9999.000 85342 1.68 0.55 19.378 16.414 2.964 3.413 3.101 0.312 85412 1.45 0.54 19.409 9999.000 9999.000 3.407 9999.000 9999.000 85482 1.76 0.55 19.366 16.189 3.177 3.416 3.081 0.335 85552 1.68 0.55 19.378 9999.000 9999.000 3.413 9999.000 9999.000 85692 1.88 0.55 19.347 9999.000 9999.000 3.419 9999.000 9999.000 85762 1.45 0.54 19.409 16.258 3.151 3.407 3.087 0.319 85832 1.72 0.55 19.372 9999.000 9999.000 3.414 9999.000 9999.000 85972 1.57 0.55 19.394 9999.000 9999.000 3.410 9999.000 9999.000 86042 1.61 0.55 19.389 16.145 3.243 3.411 3.089 0.322 86112 1.57 0.55 19.394 9999.000 9999.000 3.410 9999.000 9999.000 86252 1.37 0.54 19.419 9999.000 9999.000 3.404 9999.000 9999.000 86322 1.26 0.54 19.434 17.204 2.231 3.401 3.154 0.247 86392 1.41 0.54 19.414 9999.000 9999.000 3.405 9999.000 9999.000 86462 1.49 0.54 19.404 15.833 3.572 3.408 3.066 0.341 86532 1.37 0.54 19.419 9999.000 9999.000 3.404 9999.000 9999.000 86602 1.53 0.55 19.399 15.843 3.556 3.409 3.061 0.348 86672 1.53 0.55 19.399 9999.000 9999.000 3.409 9999.000 9999.000 86812 1.57 0.55 19.394 9999.000 9999.000 3.410 9999.000 9999.000 86882 1.37 0.54 19.419 15.843 3.576 3.404 3.076 0.328 86952 1.57 0.55 19.394 9999.000 9999.000 3.410 9999.000 9999.000 87022 1.61 0.55 19.389 16.075 3.314 3.411 3.076 0.335 87092 1.65 0.55 19.383 9999.000 9999.000 3.412 9999.000 9999.000 87162 1.49 0.54 19.404 15.993 3.411 3.408 3.080 0.328 87232 1.26 0.54 19.434 9999.000 9999.000 3.401 9999.000 9999.000 87372 1.65 0.55 19.383 9999.000 9999.000 3.412 9999.000 9999.000 87442 1.30 0.54 19.429 16.778 2.652 3.402 3.133 0.268 87512 1.37 0.54 19.419 9999.000 9999.000 3.404 9999.000 9999.000 87582 1.61 0.55 19.389 16.467 2.922 3.411 3.116 0.295 87652 1.26 0.54 19.434 9999.000 9999.000 3.401 9999.000 9999.000 87722 1.33 0.54 19.424 17.990 1.434 3.403 3.214 0.189 87792 1.14 0.58 19.450 9999.000 9999.000 3.397 9999.000 9999.000 87932 0.69 0.57 19.535 9999.000 9999.000 3.384 9999.000 9999.000 88002 0.91 0.57 19.486 18.283 1.204 3.390 3.241 0.149 88072 1.10 0.57 19.455 9999.000 9999.000 3.396 9999.000 9999.000 88142 1.18 0.58 19.445 18.441 1.004 3.399 3.249 0.150 88212 1.10 0.57 19.455 9999.000 9999.000 3.396 9999.000 9999.000 88282 1.07 0.57 19.461 18.119 1.342 3.395 3.226 0.169 88352 1.22 0.58 19.439 9999.000 9999.000 3.400 9999.000 9999.000 88492 1.10 0.57 19.455 9999.000 9999.000 3.396 9999.000 9999.000 88562 1.53 0.55 19.399 16.686 2.713 3.409 3.114 0.294 88632 1.41 0.54 19.414 9999.000 9999.000 3.405 9999.000 9999.000 88772 1.26 0.54 19.434 9999.000 9999.000 3.401 9999.000 9999.000 88842 1.61 0.55 19.389 16.292 3.097 3.411 3.098 0.313 88912 1.65 0.55 19.383 9999.000 9999.000 3.412 9999.000 9999.000 89052 2.16 0.56 19.293 9999.000 9999.000 3.426 9999.000 9999.000 89122 2.16 0.56 19.293 13.209 6.084 3.426 2.846 0.580 89192 2.24 0.56 19.275 9999.000 9999.000 3.428 9999.000 9999.000 89262 2.56 0.53 19.194 11.886 7.308 3.436 2.712 0.724 89332 2.93 0.53 19.087 9999.000 9999.000 3.444 9999.000 9999.000 89402 2.60 0.53 19.183 9.822 9.361 3.437 2.481 0.956 89472 3.64 0.51 18.860 9999.000 9999.000 3.456 9999.000 9999.000 89612 3.01 0.54 19.061 9999.000 9999.000 3.446 9999.000 9999.000 89682 3.09 0.54 19.035 7.873 11.162 3.447 2.249 1.198 89752 3.43 0.55 18.928 9999.000 9999.000 3.453 9999.000 9999.000 89892 4.50 0.53 18.586 9999.000 9999.000 3.464 9999.000 9999.000 89962 4.63 0.53 18.545 3.469 15.077 3.465 1.550 1.915 90032 4.81 0.49 18.491 9999.000 9999.000 3.465 9999.000 9999.000 90172 4.90 0.49 18.465 9999.000 9999.000 3.465 9999.000 9999.000 90242 4.81 0.49 18.491 2.074 16.417 3.465 1.262 2.203 90312 4.06 0.52 18.723 9999.000 9999.000 3.461 9999.000 9999.000 90382 4.72 0.53 18.518 1.801 16.717 3.465 1.199 2.266 90452 4.72 0.53 18.518 9999.000 9999.000 3.465 9999.000 9999.000 90522 4.59 0.53 18.559 2.344 16.215 3.465 1.308 2.156 90592 4.28 0.52 18.654 9999.000 9999.000 3.463 9999.000 9999.000 90732 4.32 0.52 18.640 9999.000 9999.000 3.463 9999.000 9999.000 90802 4.54 0.53 18.572 2.913 15.659 3.464 1.429 2.035 90872 4.11 0.52 18.709 9999.000 9999.000 3.461 9999.000 9999.000 90942 4.54 0.53 18.572 2.258 16.314 3.464 1.309 2.156 91012 4.02 0.52 18.736 9999.000 9999.000 3.461 9999.000 9999.000 91082 2.81 0.53 19.124 8.524 10.600 3.442 2.329 1.113 91152 2.97 0.54 19.074 9999.000 9999.000 3.445 9999.000 9999.000 91292 2.68 0.53 19.160 9999.000 9999.000 3.439 9999.000 9999.000 91362 2.24 0.56 19.275 11.281 7.995 3.428 2.644 0.785 91432 2.24 0.56 19.275 9999.000 9999.000 3.428 9999.000 9999.000 91572 1.68 0.55 19.378 9999.000 9999.000 3.413 9999.000 9999.000 91642 1.49 0.54 19.404 15.733 3.671 3.408 3.027 0.381 91712 1.18 0.58 19.445 9999.000 9999.000 3.399 9999.000 9999.000 91852 0.80 0.57 19.509 9999.000 9999.000 3.387 9999.000 9999.000 91922 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 91992 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92062 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92132 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92202 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92272 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92412 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92482 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 92552 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000