63 2160 M. T. Coffey and W. G. Mankin National Center for Atmospheric Research FTIR measurements of total column amounts AASE II 1 1 1992 1 16 1993 7 25 0 6 Time (seconds past 0 UT) Molecule - chemical symbol of molecule reported 6 1.0E13 0.1 0.1 0.1 1.0 0.1 999999999 999 9999 9999 99999 999 Column amount of given molecule above flight alitude (molecules/cm2) Statistical precision (retrievals from different lines) in per cent Latitude (degrees) North positive Longitude (degrees) East positive Altitude of aircraft (meters) Elevation of sun (degrees) 1 0 1.0 999 Number of observations of this molecule on this date 0 36 Infrared spectroscopic observations were made as described in JGR, 94, 11413, 1989. Analyses were done with a variety of methods. For HCl, HF, NO, and NO2, an equivalent width method was used. For CF2Cl2, CH4, C2H6, H2O, N2O, and CO2, an interactive graphical technique for fitting observed and calculated spectra was used. For O3, ClONO2, and HNO3, the SFIT least squares fitting program (Rinsland) was used. Analyses were done by Coffey, Mankin, James Hannigan, and Aaron Goldman. -- Spectral regions used for the fits: CF2Cl2 921 - 923 cm-1 C2H6 2970 - 2995 cm-1 CH4 2920 - 2925, 2970 - 2995 cm-1 ClONO2 780.0 - 780.5 cm-1 CO2 2010 - 2030 cm-1 H2O 2970 - 2995 cm-1 HCl 2920 - 2950 cm-1 HF 4039 cm-1 HNO3 867-870 cm-1 N2O 1180 - 1194 cm-1 NO 1840 - 1920 cm-1 NO2 1600 - 1610 cm-1 O3 1141 - 1144 cm-1 -- For the source gases and ozone the profiles were from Smith, NASA TM 83289. In the arctic region, these profiles were lowered by 4 km. For the other gases, profiles were from JGR, 94, 16597, 1989. Line parameters were from the AFGL92 compilation with update of the chlorine nitrate and nitric acid lines from Aaron Goldman. -- The precision, where reported, is the standard deviation of retrievals made on a number of spectral features, except for ClONO2, where it is an estimate based on the residuals in the fit. -- For the source gases, the column reported is the integrated value above 200 mb for the scaled profile that best matches the observations; thus the effect on the column of changing aircraft altitude is removed. C2H6 0 CF2Cl2 0 CH4 4 38962 391300 80 655 195 11920 35 40326 427100 56 653 141 11920 36 40963 416200 72 652 115 11930 38 41732 441700 35 651 84 11930 39 CO2 2 39844 150100000 82 654 160 11939 36 41258 147900000 106 652 103 11930 38 ClONO2 1 41537 398 400 651 92 11930 39 H2O 4 38953 1608000 222 655 195 11920 35 40326 1468000 10 653 141 11920 36 40963 1715000 217 652 115 11930 38 41732 1574000 64 651 84 11930 39 HCl 4 38992 137 64 655 194 11939 35 40365 128 129 653 139 11939 36 41003 141 85 652 114 11939 38 41772 127 76 651 83 11930 39 HF 4 38881 115 999 655 199 11939 34 40267 126 999 653 143 11920 36 40908 111 999 652 118 11939 37 42116 122 999 650 69 11939 40 HNO3 10 39259 2770 999 655 183 11930 35 39348 2780 999 655 180 11930 35 39438 2870 999 655 176 11930 35 39527 2780 999 654 173 11930 35 39617 2870 999 654 170 11939 35 40628 2480 999 653 129 11939 37 41403 2680 999 651 98 11939 38 41493 2690 999 651 94 11939 38 41582 2710 999 651 91 11939 39 41672 2440 999 651 87 11930 39 N2O 4 39219 66050 24 655 184 11920 35 40597 66580 31 653 130 11939 37 41363 70100 28 652 99 11939 38 41632 68600 42 651 89 11930 39 NO 1 41902 263 175 650 78 11930 40 NO2 4 39722 32 176 654 166 11939 35 40518 28 295 653 133 11930 37 41100 32 197 652 110 11930 38 42037 30 356 650 72 11930 40 O3 10 39259 756400 999 655 183 11930 35 39348 756900 999 655 180 11930 35 39438 758500 999 655 176 11930 35 39527 758900 999 654 173 11930 35 39617 744900 999 654 170 11939 35 40628 735500 999 653 129 11939 37 41403 715400 999 651 98 11939 38 41493 721400 999 651 94 11939 38 41582 715700 999 651 91 11939 39 41672 704300 999 651 87 11930 39