50 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 16 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) 27 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 This term no longer represents only a delay from the surface to the tropopause.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. CFC-11 was not measured. Total Cl and Br cannot be calculated. 1 GMTs Age AgeERR TotalBr CBry Bry TotalCl CCly Cly 69168 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69238 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69308 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69378 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69448 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69518 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69588 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69728 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69798 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69868 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 69938 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70008 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70078 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70148 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70288 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70358 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70428 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70568 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70638 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70708 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70848 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70918 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 70988 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71058 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71128 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71198 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71268 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71408 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71478 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71548 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71618 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71688 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71758 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71828 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 71968 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72038 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72108 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72178 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72248 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72318 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72388 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72528 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72598 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72668 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72738 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72808 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72878 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 72948 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73088 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73158 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73228 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73368 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73438 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73508 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73648 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73718 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73788 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73858 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73928 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 73998 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74068 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74208 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74278 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74348 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74488 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74558 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74628 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74768 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74838 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74908 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 74978 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75048 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75118 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75188 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75328 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75398 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75468 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75538 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75608 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75678 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75748 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75888 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 75958 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76028 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76168 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76238 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76308 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76448 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76518 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76588 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76658 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76728 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76798 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 76868 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77008 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77078 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77148 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77218 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77288 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77358 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77428 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77568 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77638 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77708 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77848 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77918 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 77988 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78128 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78198 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78268 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78338 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78408 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78478 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78548 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78688 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78758 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78828 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 78968 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79038 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79108 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79248 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79318 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79388 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79458 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79528 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79598 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79668 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79808 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79878 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 9999.000 79948 9999.00 9999.00 9999.000 9999.000 9999.000 9999.000 9999.000 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