74 1001 ;header lines file format index ATLAS, ELLIOT NCAR MIXING RATIOS FROM WHOLE AIR SAMPLER ACCENT 1 1 ;vol total vol 1999 09 03 2000 09 01 ;DATE RDATE 0 ;DX(1) Elapsed UT seconds from 0 hours on T/O DATE ;UTMID 42 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 ;scale factors 99999 99999 999 999 9.99 999.9 99.9 99.99 99.99 99.99 99.99 99.99 999.9 999.99 999.99 999 999.99 99.99 99.99 99.99 999.9 999.9 99.99 99.99 99.99 99.99 99.99 99.99 99.99 99.99 99.99 99.99 9999 9999 9999 999.9 999.9 999.9 999.9 999.9 9999 9999 UTSTART (sec) ;MMS data UTSTOP (sec) ;MMS data CCl3F (pptv) CFC 11 CCl2F2 (pptv) CFC 12 C2Cl4F2 (pptv) CFC 112 C2Cl3F3 (pptv) CFC 113 C2Cl2F4 (pptv) CFC 114 C2ClF5 (pptv) CFC 115 CBrF3 (pptv) Halon 1301 CBrClF2 (pptv) Halon 1211 C2Br2F4 (pptv) Halon 2402 C2H2F4 (pptv) HFC 134a CHClF2 (pptv) HCFC 22 CH3CCl2F (pptv) HCFC 141b CH3CClF2 (pptv) HCFC 142b CH3Cl (pptv) Methyl chloride CH3Br (pptv) Methyl bromide CH3I (pptv) Methyl iodide CH2Cl2(pptv) Methylene chloride CHCl3 (pptv) Chloroform CH3CCl3 (pptv) Methyl chloroform CCl4 (pptv) Carbon tetrachloride C2HCl3 (pptv) Trichlorethylene C2Cl4 (pptv) Perchlorethylene CH3ONO2 (pptv) Methyl nitrate C2H5ONO2 (pptv) Ethyl nitrate C3H7ONO2 (pptv) Isopropyl nitrate C3H7ONO2 (pptv) n-propyl nitrate C4H9ONO2 (pptv) 2-butyl nitrate CH2Br2 (pptv) Methylene bromide CHBr2Cl (pptv) Dibromochloromethane CHBr3 (pptv) Bromoform C2H6 (pptv) Ethane C2H2 (pptv) Ethyne C3H8 (pptv) Propane C4H10 (pptv) i-Butane C4H10 (pptv) n-Butane C5H12 (pptv) Isopentane C5H12 (pptv) n-Pentane C6H6 (pptv) Benzene CO (ppbv) Carbon monoxide CH4 (ppbv) Methane 2 ;number of special comment lines (specific to this flight) UTSTART and UTSTOP times were estimated as plus and minus 20 seconds, respectively, from the UTMID time. Further refinements are necessary on the start and stop times. 14 ;number of normal comment lines (occur each flight) UTSTART WAS THE TIME THE CANISTER BEGAN FILLING UTMID WAS THE TIME THE CANISTER WAS HALF FULL UTSTOP WAS THE TIME THE CANISTER FINISHED FILLING Calibrations for these compounds is ongoing. 0.0 - Concentration Below Detection Limit CO measurements in the lower stratosphere (O3>300 ppb) may be high by 10-15 ppb due to canister artifact. Some trace gases during the Fall ACCENT mission may have been influenced by some pump contamination, but only obvious outliers have been removed from the data set. For questions, contact Elliot Atlas, Atmospheric Chemistry Division, NCAR, PO Box 3000, Boulder CO Ph: 303-497-1425, e-mail: atlas@acd.ucar.edu UTMID UTSTART UTSTOP CFC11 CFC12 CFC112 CFC113 CFC114 CFC115 CBrF3 CBrClF2 C2Br2F4 C2H2F4 CHClF2 CH3CCl2F CH3CClF2 CH3Cl CH3Br CH3I CH2Cl2 CHCl3 CH3CCl3 CCl4 C2HCl3 C2Cl4 MeONO2 EtONO2 iPropONO2 nPropONO2 2ButylONO2 CH2Br2 CHBr2Cl CHBr3 Ethane Ethyne Propane iButane nButane iPentane nPentane Benzene CO CH4 50596 50576 50616 283 540 0.41 999.9 13.7 6.24 2.32 4.03 0.47 13.91 143.3 12.26 14.84 576 11.27 0.10 17.79 6.24 54.4 98.4 99.99 7.83 2.30 1.64 2.59 0.38 0.91 0.86 0.11 0.43 654 52 118 999.9 10.4 2.5 2.7 999.9 72 1763 50680 50660 50700 281 530 0.41 999.9 13.5 6.20 2.62 4.03 0.49 14.41 143.2 12.35 12.81 571 11.40 0.13 18.02 6.26 53.8 97.7 99.99 5.23 2.32 1.60 2.93 0.40 1.16 0.84 0.12 0.47 721 61 143 999.9 17.6 7.0 4.7 999.9 67 1769 51243 51223 51263 285 545 0.42 999.9 14.1 6.16 2.40 4.04 0.45 13.60 143.8 12.27 12.63 574 11.73 0.08 17.57 6.41 55.1 100.1 99.99 4.92 2.23 1.46 2.68 0.38 0.97 0.90 0.11 0.45 676 47 111 999.9 9.9 1.8 2.3 999.9 65 1764 51806 51786 51826 280 540 0.43 999.9 13.9 6.43 2.53 4.04 0.49 12.20 141.7 11.90 12.27 567 10.58 0.08 17.48 6.32 54.3 98.3 99.99 4.02 2.05 1.27 2.09 0.33 0.83 0.83 0.14 0.48 629 53 96 999.9 8.2 1.7 1.7 999.9 62 1765 52370 52350 52390 284 554 0.44 999.9 14.0 7.06 2.93 4.04 0.49 11.38 142.7 11.94 12.20 589 10.36 0.05 16.22 6.08 54.9 100.4 99.99 3.41 2.21 0.92 1.58 0.24 0.53 0.89 0.18 0.73 617 42 72 999.9 5.5 0.0 0.8 999.9 53 1758 52935 52915 52955 283 550 0.42 999.9 13.9 6.97 2.78 4.11 0.45 11.81 141.7 11.70 11.57 588 10.35 0.06 16.60 5.99 54.9 99.6 99.99 2.99 1.78 0.88 1.04 0.00 0.32 0.83 0.10 0.43 579 41 58 999.9 4.1 0.0 0.0 999.9 59 1769 53500 53480 53520 282 539 0.43 999.9 13.8 6.51 2.57 3.99 0.46 12.91 139.0 11.50 11.71 573 10.18 0.06 16.62 5.79 54.6 98.3 99.99 2.74 1.63 1.06 1.08 0.27 0.34 0.86 0.13 0.38 547 41 51 999.9 3.3 0.0 0.7 999.9 53 1756 54064 54044 54084 279 536 0.38 999.9 13.8 6.26 2.41 3.97 0.45 12.00 138.9 11.18 11.21 577 10.01 0.05 17.91 6.25 54.6 98.0 99.99 2.61 1.40 0.70 0.71 0.22 0.20 0.74 0.07 0.17 443 52 38 999.9 5.4 0.0 0.0 999.9 58 1762 54628 54608 54648 279 539 0.41 999.9 13.8 6.65 2.54 3.98 0.46 10.81 137.6 10.94 11.48 575 9.90 0.06 18.03 6.39 54.6 98.0 99.99 2.56 1.41 0.59 0.53 0.28 0.00 0.73 0.11 0.22 423 53 31 999.9 4.6 0.0 1.6 999.9 60 1764 55193 55173 55213 260 546 0.44 999.9 13.7 6.63 2.71 4.06 0.49 12.11 138.1 11.24 12.11 579 10.02 0.05 18.12 6.47 55.3 99.2 99.99 2.68 1.59 0.80 0.82 0.19 0.34 0.78 0.07 0.26 459 60 39 999.9 5.7 0.0 0.0 999.9 61 1764 55758 55738 55778 258 536 0.40 999.9 13.8 6.37 2.49 4.04 0.47 11.90 140.2 11.36 11.77 580 10.19 0.04 18.11 6.27 53.8 97.9 99.99 2.61 1.67 1.02 1.09 0.22 0.56 0.82 0.14 0.34 528 57 56 999.9 7.2 1.7 2.2 999.9 62 1771 56324 56304 56344 258 539 0.42 999.9 13.8 6.42 2.57 4.05 0.52 11.55 140.0 11.57 12.03 576 10.09 0.05 15.86 5.74 53.9 98.4 99.99 2.67 1.99 1.14 1.97 0.29 0.82 0.94 0.13 0.59 748 53 114 999.9 8.6 0.0 0.0 999.9 63 1760 56890 56870 56910 281 533 0.44 999.9 13.7 6.18 2.09 4.06 0.44 13.06 139.6 11.44 12.13 572 10.23 0.05 16.98 5.92 54.4 97.7 99.99 2.42 1.35 0.69 0.71 0.13 0.22 0.80 0.10 0.27 542 43 45 999.9 3.3 0.0 0.9 999.9 60 1759 57460 57440 57480 279 534 0.43 999.9 13.8 6.24 2.29 4.02 0.45 11.65 138.9 11.10 11.89 572 9.91 0.04 16.84 5.60 54.5 97.4 99.99 2.37 1.34 0.52 0.49 0.00 0.38 0.79 0.10 0.21 441 42 30 999.9 3.0 0.0 0.0 999.9 55 1755 58035 58015 58055 280 534 0.42 999.9 13.7 6.36 2.51 4.01 0.44 11.29 137.5 10.87 11.67 575 9.81 0.06 16.44 5.50 54.6 97.6 99.99 1.91 0.99 0.38 0.35 0.00 0.33 0.76 0.09 0.19 362 39 20 999.9 3.1 0.0 0.0 999.9 54 1750 58614 58594 58634 279 536 0.39 999.9 13.8 6.23 2.44 3.97 0.45 10.30 137.4 10.90 11.90 578 9.84 0.06 16.58 5.54 54.7 97.7 99.99 1.95 1.17 0.52 0.43 0.00 0.13 0.74 0.08 0.18 388 39 22 999.9 2.5 0.0 0.8 999.9 56 1750 59195 59175 59215 281 537 0.45 999.9 13.8 6.32 2.64 4.11 0.48 11.99 138.0 10.91 11.62 572 9.76 0.04 16.07 5.53 55.1 97.7 99.99 1.91 0.95 0.52 0.43 0.23 0.00 0.69 0.08 0.19 384 34 23 999.9 2.3 0.0 0.0 999.9 54 1746 59775 59755 59795 277 523 0.37 999.9 13.5 6.05 2.28 3.95 0.44 11.08 136.1 10.69 11.37 566 9.64 0.05 15.92 5.39 54.6 96.3 99.99 1.83 0.94 0.45 0.32 0.00 0.00 0.72 0.06 0.15 377 37 20 999.9 2.5 0.0 1.3 999.9 56 1752 60355 60335 60375 276 535 0.41 999.9 13.9 6.19 2.45 4.06 0.45 11.06 137.5 10.88 11.49 576 9.84 0.04 16.54 5.47 54.4 97.6 99.99 1.91 1.08 0.58 0.43 0.11 0.22 0.82 0.10 0.19 387 38 23 999.9 3.3 0.0 0.0 999.9 54 1752 60936 60916 60956 279 542 0.38 999.9 13.9 6.24 2.24 4.08 0.45 12.30 140.7 11.46 11.65 589 10.26 0.05 15.89 6.21 54.0 100.3 99.99 2.37 3.17 1.79 2.27 0.35 1.32 1.02 0.12 0.55 780 68 139 999.9 13.2 1.0 1.6 999.9 77 1766