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 11 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 4 57490 127 104 485 -1171 12560 19 58532 146 39 468 -1189 12569 43 59675 98 76 449 -1208 12550 71 60441 37 200 436 -1221 12569 89 CH4 1 60611 553200 59 433 -1223 12569 94 CO2 3 58151 177700000 78 474 -1183 12560 34 60251 154500000 146 439 -1217 12560 85 60926 152500000 71 427 -1228 12560 103 ClONO2 0 H2O 1 60611 1816000 188 433 -1223 12569 94 HCl 3 57609 288 133 483 -1173 12560 22 58850 269 245 462 -1195 12569 51 60614 350 129 433 -1223 12569 94 HF 4 57767 56 999 480 -1176 12569 25 58736 79 999 464 -1193 12560 48 59887 57 999 445 -1212 12560 76 60736 80 999 430 -1225 12560 98 HNO3 4 57494 1380 999 485 -1171 12560 19 58536 1500 999 468 -1189 12560 43 59679 1500 999 448 -1208 12560 71 60452 1100 999 436 -1221 12560 90 N2O 4 57490 83830 67 485 -1171 12560 19 58532 93710 58 468 -1189 12569 43 59675 91170 43 449 -1208 12550 71 60441 84360 49 436 -1221 12569 89 NO 3 58010 171 337 476 -1180 12560 31 59094 265 141 458 -1199 12550 57 60120 251 306 442 -1215 12560 82 NO2 4 57872 40 105 479 -1178 12560 28 58956 52 275 460 -1197 12560 53 59987 61 103 444 -1213 12569 78 60835 57 198 428 -1227 12550 100 O3 4 57494 651900 999 485 -1171 12560 19 58536 715400 999 468 -1189 12560 43 59679 741300 999 448 -1208 12560 71 60452 642200 999 436 -1221 12560 90