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 14 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 3 50300 500400 20 740 -313 11319 28 51608 493000 19 738 -405 11579 28 52209 452100 18 737 -447 11939 29 CO2 3 49680 135500000 100 740 -270 11319 29 49689 129500000 11 740 -270 11319 29 51214 136200000 39 739 -378 11319 28 ClONO2 0 H2O 3 50300 1356000 39 740 -313 11319 28 51617 1535000 16 738 -405 11590 28 52218 1599000 39 737 -447 11939 29 HCl 4 49110 253 108 739 -230 11310 29 50340 281 31 740 -315 11319 28 51648 270 29 738 -407 11630 28 52227 257 20 737 -448 11949 29 HF 2 50226 144 999 740 -307 11319 28 51540 135 999 738 -400 11369 28 HNO3 7 49202 1620 999 739 -237 11319 29 50459 1850 999 740 -324 11319 28 50549 1840 999 739 -330 11319 28 50629 1720 999 739 -336 11319 28 50713 1730 999 739 -342 11319 28 50803 1640 999 739 -348 11319 28 52039 1770 999 737 -434 11939 29 N2O 3 49162 73260 8 739 -234 11319 29 50419 73080 23 740 -321 11319 28 51999 71680 37 738 -432 11949 29 NO 2 49547 153 167 739 -260 11319 29 51111 177 81 739 -370 11310 28 NO2 3 49397 50 161 739 -250 11319 29 50976 52 87 739 -361 11319 28 52150 55 120 737 -442 11949 29 O3 7 49202 600500 999 739 -237 11319 29 50459 625700 999 740 -324 11319 28 50549 621300 999 739 -330 11319 28 50629 621800 999 739 -336 11319 28 50713 632200 999 739 -342 11319 28 50803 641900 999 739 -348 11319 28 52039 627100 999 737 -434 11939 29