113 1010 Coffey, Michael T. and James W. Hannigan National Center for Atmospheric Research, Boulder, CO, USA Fourier transform spectrometer (FTS) aboard the DC-8 PAVE Takeoff date:20050118 1 1 2005 01 18 2005 05 24 0 Time (UT), seconds after 00:00 of a/c launch date 42 1e+13 1e+13 1e+16 1e+16 1e+13 1e+13 1e+16 1e+16 1e+17 1e+17 1e+15 1e+15 1e+14 1e+14 1e+13 1e+13 1e+17 1e+17 1e+19 1e+19 1e+13 1e+13 1e+13 1e+13 1e+13 1e+13 1e+13 1e+13 1e+17 1e+17 1e+17 1e+17 1e+13 1e+13 1e+13 1e+13 1e+13 1e+13 1e+13 1e+13 1e+13 1e+13 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 HF vertical column amount [molecules/cm**2] HF estimated error in total column [molecules/cm**2] O3 vertical column amount [molecules/cm**2] O3 estimated error in total column [molecules/cm**2] HCL vertical column amount [molecules/cm**2] HCL estimated error in total column [molecules/cm**2] N2O vertical column amount [molecules/cm**2] N2O estimated error in total column [molecules/cm**2] CH4 vertical column amount [molecules/cm**2] CH4 estimated error in total column [molecules/cm**2] CO vertical column amount [molecules/cm**2] CO estimated error in total column [molecules/cm**2] HNO3 vertical column amount [molecules/cm**2] HNO3 estimated error in total column [molecules/cm**2] CLONO2 vertical column amount [molecules/cm**2] CLONO2 estimated error in total column [molecules/cm**2] H2O vertical column amount [molecules/cm**2] H2O estimated error in total column [molecules/cm**2] N2 vertical column amount [molecules/cm**2] N2 estimated error in total column [molecules/cm**2] COF2 vertical column amount [molecules/cm**2] COF2 estimated error in total column [molecules/cm**2] NO vertical column amount [molecules/cm**2] NO estimated error in total column [molecules/cm**2] NO2 vertical column amount [molecules/cm**2] NO2 estimated error in total column [molecules/cm**2] CCL2F2 vertical column amount [molecules/cm**2] CCL2F2 estimated error in total column [molecules/cm**2] HDO vertical column amount [molecules/cm**2] HDO estimated error in total column [molecules/cm**2] CH3D vertical column amount [molecules/cm**2] CH3D estimated error in total column [molecules/cm**2] C2H6 vertical column amount [molecules/cm**2] C2H6 estimated error in total column [molecules/cm**2] OCS vertical column amount [molecules/cm**2] OCS estimated error in total column [molecules/cm**2] H2CO vertical column amount [molecules/cm**2] H2CO estimated error in total column [molecules/cm**2] HCN vertical column amount [molecules/cm**2] HCN estimated error in total column [molecules/cm**2] CCL3F vertical column amount [molecules/cm**2] CCL3F estimated error in total column [molecules/cm**2] 11 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 9999 9999 9999 9999 9999 9999 9999 9999 9999 9999 9999 Day of year of observation Year of observation Month of observation Day of observation Hour of observation Minute of observation Second of observation Latitude of observation (degree N) Longitude of observation (degree W) Altitude of observation (km) Solar zenith angle (degree) 31 Data were taken by a 0.06cm-1 resolution Fourier transform spectrometer (FTS) operated aboard the NASA DC-8 aircraft. The absorption of infrared solar radiation along a slant path to the sun is recorded from 2 to 15 micrometers. Six spectral filters are used to cover the region from 2-15 microns. An interferogram is recorded in about 10 seconds. Interferograms are transformed to produce spectra. Column amounts are retrieved by fitting the observed spectra using the non-linear least squares fitting code SFIT2 that employs an Optimal Estimation retrieval algorithm. Version 3.90i of the SFIT2 code was used. The HITRAN absorption line list with updates to 2004 is used in the forward calculation. Temperarture profiles are derived from NCEP analyses for each day. Observations were made through an IR transmitting window in the right side of the aircraft at solar elevations between 10 and 0 degrees; usually from the maximum aircraft altitude of 39,000 to 41,000 ft (11.88 to 12.49 km). Vertical column amounts are reported above an altitude of 13 km. Details of the instrumentation and method may be found in: Airborne spectroscopic observations of chlorine activation and de-nitrification in the 1999/2000 winter Arctic stratosphere during SOLVE, M. T. Coffey, W. G. Mankin, J. W. Hannigan, and G. C. Toon, J. Geophys. Res., 107, 8303, 2002. Intercomparison of retrieval codes used for the analysis of high-resolution, ground-based FTIR measurements, F. Hase, J. W. Hannigan, M. T. Coffey, A. Goldman, M. Hopfner, N. B. Jones, C. P. Rinsland, S. W. Wood, Quant. Spectrosc. Radiat. Transfer, 87, 25-52, 2004. Contacts: Michael T. Coffey James W. Hannigan NCAR PO Box 3000 Boulder, CO 80307 303 497 1407 coffey@ucar.edu, jamesw@ucar.edu 6 SECONDS(UT) DOY YEAR MONTH DAY HOUR MIN SEC LAT LON ALT SZA HF ERR O3 ERR HCL ERR N2O ERR CH4 ERR CO ERR HNO3 ERR CLONO2 ERR H2O ERR N2 ERR COF2 ERR NO ERR NO2 ERR CCL2F2 ERR HDO ERR CH3D ERR C2H6 ERR OCS ERR H2CO ERR HCN ERR CCL3F ERR 088530 019 2005 01 19 00 35 31 +35.41 +120.52 11.89 83.48 00112 00006 00705 00037 00285 00014 00083 00005 00049 00005 00134 00012 99999 99999 99999 99999 00206 00017 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00035 00004 00126 00012 99999 99999 00071 00006 99999 99999 088668 019 2005 01 19 00 37 48 +35.19 +120.36 11.89 83.86 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00234 00020 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 088776 019 2005 01 19 00 39 37 +35.01 +120.24 11.89 84.17 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00096 00007 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00145 00009 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 089026 019 2005 01 19 00 43 46 +34.56 +119.94 11.88 84.95 00109 00006 00713 00037 00297 00015 00085 00005 00051 00005 00134 00012 99999 99999 99999 99999 00239 00020 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00038 00004 00133 00012 99999 99999 00064 00006 99999 99999 089243 019 2005 01 19 00 47 23 +34.22 +119.72 11.88 85.54 00111 00006 00709 00037 00291 00015 00084 00005 00050 00005 00134 00012 99999 99999 99999 99999 00239 00020 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00047 00005 00132 00012 99999 99999 00071 00007 99999 99999 089430 019 2005 01 19 00 50 31 +33.88 +119.48 11.88 86.18 00116 00007 00708 00037 00289 00015 00082 00004 00049 00005 00131 00012 99999 99999 99999 99999 00229 00019 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00039 00004 00129 00011 99999 99999 00072 00006 99999 99999 089766 019 2005 01 19 00 56 07 +33.38 +119.02 11.88 87.29 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00271 00023 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 089862 019 2005 01 19 00 57 43 +33.22 +118.91 11.88 87.60 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00086 00006 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00150 00009 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999