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 2 20 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 4 77927 146 19 176 -662 10720 106 78398 138 11 185 -664 10729 88 79234 130 17 202 -668 10729 56 79941 131 15 217 -671 11329 28 CF2Cl2 5 77640 189 200 170 -661 10720 118 78162 205 185 181 -663 10720 97 78680 189 160 191 -666 10729 77 79576 182 125 209 -670 10729 42 80054 197 38 219 -672 11319 24 CH4 4 77927 589800 9 176 -662 10720 106 78398 586400 40 185 -664 10729 88 79234 584100 19 202 -668 10729 56 79941 567600 20 217 -671 11329 28 CO2 2 78507 151000000 21 188 -665 10729 84 79350 150100000 28 205 -669 10729 51 ClONO2 0 H2O 4 77927 2014000 74 176 -662 10720 106 78398 1998000 57 185 -664 10729 88 79234 2028000 20 202 -668 10729 56 79941 1936000 46 217 -671 11329 28 HCl 4 77931 170 88 176 -662 10729 106 78402 162 35 186 -665 10720 88 79238 166 131 203 -668 10729 55 79945 153 27 217 -671 11329 28 HF 4 77790 38 999 173 -662 10720 112 78290 37 999 183 -664 10729 92 79119 34 999 200 -668 10729 60 79832 33 999 215 -671 11350 32 HNO3 8 77644 263 999 170 -661 10720 117 78166 514 999 181 -663 10720 97 78684 496 999 191 -666 10720 77 78773 749 999 193 -666 10720 73 78863 536 999 195 -667 10729 70 79580 562 999 209 -670 10729 42 80058 607 999 219 -672 11319 23 80147 557 999 221 -672 11329 20 N2O 5 77640 97790 16 170 -661 10720 118 78162 99940 22 181 -663 10720 97 78680 100700 24 191 -666 10729 77 79576 97790 16 209 -670 10729 42 80054 95660 16 219 -672 11319 24 NO 0 NO2 2 78972 182 66 197 -667 10729 66 79703 169 47 212 -671 10920 37 O3 8 77644 485200 999 170 -661 10720 117 78166 480700 999 181 -663 10720 97 78684 491300 999 191 -666 10720 77 78773 481200 999 193 -666 10720 73 78863 481500 999 195 -667 10729 70 79580 441600 999 209 -670 10729 42 80058 389300 999 219 -672 11319 23 80147 384300 999 221 -672 11329 20