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 8 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 3 88470 131 66 230 -1205 11949 111 89806 96 172 251 -1217 11949 66 90728 103 170 266 -1226 11960 35 CF2Cl2 3 88333 170 111 228 -1203 11949 116 89564 176 139 248 -1214 11949 73 90591 163 69 264 -1224 11949 40 CH4 3 88470 498000 63 230 -1205 11949 111 89806 488200 47 251 -1217 11949 66 90728 442800 2 266 -1226 11960 35 CO2 2 89109 147300000 47 240 -1210 11949 89 91342 128200000 32 275 -1231 12560 15 ClONO2 0 H2O 3 88470 1483000 111 230 -1205 11949 111 89806 1423000 46 251 -1217 11949 66 90728 1272000 98 266 -1226 11960 35 HCl 3 88474 178 129 230 -1205 11960 111 89810 170 206 251 -1217 11939 65 90732 145 63 266 -1226 11989 35 HF 3 88590 52 999 232 -1206 11949 106 89704 42 999 250 -1216 11949 69 90849 39 999 268 -1227 12369 31 HNO3 2 89568 772 999 248 -1214 11949 73 90595 825 999 264 -1224 11949 40 N2O 3 88333 90980 22 228 -1203 11949 116 89564 89520 16 248 -1214 11949 73 90591 76820 105 264 -1224 11949 40 NO 0 NO2 3 88825 173 42 236 -1208 11949 99 89908 167 56 253 -1218 11949 62 91066 147 41 271 -1229 12560 24 O3 2 89568 550800 999 248 -1214 11949 73 90595 479800 999 264 -1224 11949 40