124 1010
Coffey, Michael T. and James W. Hannigan
National Center for Atmospheric Research, Boulder, CO, USA 
Fourier transform spectrometer (FTS) from the T1 site in MILAGRO 
Observation date:20060309
1 1
2006 03 11   2006 03 11
0
Time (UT), seconds after 00:00 of observation date   
52
1e+12 1e+12 1e+16 1e+16 1e+13 1e+13 1e+16 1e+16 1e+17 1e+17 1e+15 1e+15 
1e+13 1e+13 1e+13 1e+13 1e+18 1e+18 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+12 1e+12 1e+13 1e+13 1e+13 1e+13 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 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]
C3H8 vertical column amount [molecules/cm**2]
C3H8 estimated error in total column [molecules/cm**2]
C2H2 vertical column amount [molecules/cm**2]
C2H2 estimated error in total column [molecules/cm**2]
NH3 vertical column amount [molecules/cm**2]
NH3 estimated error in total column [molecules/cm**2]
C2H4 vertical column amount [molecules/cm**2]
C2H4 estimated error in total column [molecules/cm**2]
PAN vertical column amount [molecules/cm**2]
PAN 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)
29
Data were taken by a 0.06cm-1 resolution Fourier transform spectrometer (FTS) operated
from a trailer situated(usually) at the T1 site of MILAGRO (19.7 N, 98.98 W).  The absorption
of infrared solar radiation along a slant path to the sun is recorded from 2 to 15 micrometers.
Two 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 3.92 
of the SFIT2 code was used. The HITRAN absorption line list with updates to 2004 is used
in the forward calculation.  An average temperature profile was derived from NCEP analyses.  
Observations were made during sunlit hours throughout the day.  Vertical column amounts
are reported above the observing location.  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
National Center for Atmospheric Research
PO Box 3000
Boulder, CO 80307
303 497 1407
coffey@ucar.edu, jamesw@ucar.edu
7
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    C3H8 ERR    C2H2 ERR     NH3 ERR 
   C2H4 ERR     PAN ERR 

054089 059 2006 03 09 15 01 29 +19.70 +98.98   2.27 60.43
99999 99999 00840 00074 99999 99999 99999 99999 99999 99999 99999 99999 
00763 00068 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00782 00110 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00377 00054 99999 99999 99999 99999 01775 00381 
00116 00022 99999 99999 
054271 059 2006 03 09 15 04 31 +19.70 +98.98   2.27 59.75
99999 99999 99999 99999 99999 99999 99999 99999 00306 00055 02337 00393 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00702 00101 
00488 00090 99999 99999 99999 99999 99999 99999 00105 00022 99999 99999 
99999 99999 99999 99999 
054729 059 2006 03 09 15 12 10 +19.70 +98.98   2.27 58.04
99999 99999 99999 99999 99999 99999 99999 99999 00345 00047 02021 00330 
99999 99999 99999 99999 31244 06618 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 01383 00204 00801 00115 
00504 00094 99999 99999 99999 99999 00355 00080 00118 00025 99999 99999 
99999 99999 99999 99999 
054943 059 2006 03 09 15 15 43 +19.70 +98.98   2.27 57.24
99999 99999 00810 00071 99999 99999 99999 99999 99999 99999 99999 99999 
00742 00066 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00773 00109 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00376 00054 99999 99999 99999 99999 01930 00416 
00119 00023 99999 99999 
056280 059 2006 03 09 15 38 00 +19.70 +98.98   2.27 52.33
99999 99999 99999 99999 99999 99999 99999 99999 00321 00041 02135 00352 
99999 99999 99999 99999 32294 06891 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 01491 00221 00791 00114 
00495 00091 99999 99999 99999 99999 00358 00080 00118 00025 99999 99999 
99999 99999 99999 99999 
057864 059 2006 03 09 16 04 24 +19.70 +98.98   2.27 46.67
99999 99999 99999 99999 99999 99999 99999 99999 00337 00044 02354 00396 
99999 99999 99999 99999 33184 07129 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 01495 00222 00770 00111 
00511 00095 99999 99999 99999 99999 00359 00081 00121 00026 99999 99999 
99999 99999 99999 99999 
058049 059 2006 03 09 16 07 29 +19.70 +98.98   2.27 46.02
99999 99999 00831 00073 99999 99999 99999 99999 99999 99999 99999 99999 
00848 00077 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00771 00110 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00375 00054 99999 99999 99999 99999 02981 00662 
00133 00026 99999 99999 
060437 059 2006 03 09 16 47 17 +19.70 +98.98   2.27 38.03
99999 99999 99999 99999 99999 99999 99999 99999 00343 00046 02097 00342 
99999 99999 99999 99999 32851 07047 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 01449 00219 00774 00111 
00518 00097 99999 99999 99999 99999 00356 00080 00119 00025 99999 99999 
99999 99999 99999 99999 
062248 059 2006 03 09 17 17 28 +19.70 +98.98   2.27 32.62
99999 99999 00820 00072 99999 99999 99999 99999 99999 99999 99999 99999 
00761 00068 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00733 00104 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00366 00053 99999 99999 99999 99999 01006 00212 
00122 00023 99999 99999 
063981 059 2006 03 09 17 46 22 +19.70 +98.98   2.27 28.30
99999 99999 99999 99999 99999 99999 99999 99999 00384 00057 01807 00283 
99999 99999 99999 99999 25918 05358 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 01153 00162 00661 00095 
00514 00096 99999 99999 99999 99999 00350 00078 00121 00026 99999 99999 
99999 99999 99999 99999 
071681 059 2006 03 09 19 54 41 +19.70 +98.98   2.27 29.20
99999 99999 99999 99999 99999 99999 99999 99999 00335 00043 99999 99999 
99999 99999 99999 99999 35281 07691 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 01583 00232 00724 00104 
00540 00103 99999 99999 99999 99999 00360 00081 00123 00027 99999 99999 
99999 99999 99999 99999 
071933 059 2006 03 09 19 58 53 +19.70 +98.98   2.27 29.80
99999 99999 00852 00076 99999 99999 99999 99999 99999 99999 99999 99999 
00791 00071 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00720 00102 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00370 00053 99999 99999 99999 99999 01010 00213 
00146 00028 99999 99999 
073789 059 2006 03 09 20 29 49 +19.70 +98.98   2.27 34.84
99999 99999 99999 99999 99999 99999 99999 99999 00357 00047 99999 99999 
99999 99999 99999 99999 34602 07518 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 01688 00248 00732 00105 
00546 00105 99999 99999 99999 99999 00360 00081 00127 00028 99999 99999 
99999 99999 99999 99999 
074610 059 2006 03 09 20 43 30 +19.70 +98.98   2.27 37.34
99999 99999 99999 99999 99999 99999 99999 99999 00347 00046 99999 99999 
99999 99999 99999 99999 33447 07200 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 01596 00235 00778 00112 
00571 00111 99999 99999 99999 99999 00361 00081 00137 00030 99999 99999 
99999 99999 99999 99999 
074884 059 2006 03 09 20 48 04 +19.70 +98.98   2.27 38.21
99999 99999 00860 00076 99999 99999 99999 99999 99999 99999 99999 99999 
00804 00073 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00728 00103 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00370 00053 99999 99999 99999 99999 00907 00190 
00154 00030 99999 99999 
077109 059 2006 03 09 21 25 09 +19.70 +98.98   2.27 45.65
99999 99999 99999 99999 99999 99999 99999 99999 00331 00045 99999 99999 
99999 99999 99999 99999 35835 07763 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 01014 00148 00802 00115 
00578 00113 99999 99999 99999 99999 00375 00085 00142 00031 99999 99999 
99999 99999 99999 99999 
078425 059 2006 03 09 21 47 05 +19.70 +98.98   2.27 50.35
99999 99999 00897 00080 99999 99999 99999 99999 99999 99999 99999 99999 
00754 00067 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00739 00105 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00370 00053 99999 99999 99999 99999 01394 00297 
00165 00032 99999 99999 
080614 059 2006 03 09 22 23 34 +19.70 +98.98   2.27 58.33
99999 99999 00862 00076 99999 99999 99999 99999 99999 99999 99999 99999 
00573 00051 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00751 00106 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00369 00053 99999 99999 99999 99999 02710 00589 
00117 00022 99999 99999 
080836 059 2006 03 09 22 27 16 +19.70 +98.98   2.27 59.16
99999 99999 99999 99999 99999 99999 99999 99999 00305 00046 02119 00351 
99999 99999 99999 99999 37597 08210 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 00764 00110 
00535 00102 99999 99999 99999 99999 00356 00080 00113 00024 99999 99999 
99999 99999 99999 99999 
082365 059 2006 03 09 22 52 45 +19.70 +98.98   2.27 64.91
99999 99999 00852 00075 99999 99999 99999 99999 99999 99999 99999 99999 
00587 00052 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00784 00111 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00367 00053 99999 99999 99999 99999 01550 00325 
00111 00021 99999 99999 
083848 059 2006 03 09 23 17 28 +19.70 +98.98   2.27 70.57
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 02041 00338 
99999 99999 99999 99999 37269 08215 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00531 00101 99999 99999 99999 99999 99999 99999 00113 00024 99999 99999 
99999 99999 99999 99999 
085833 059 2006 03 09 23 50 33 +19.70 +98.98   2.27 78.22
99999 99999 00839 00074 99999 99999 99999 99999 99999 99999 99999 99999 
00588 00052 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00839 00117 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00369 00053 99999 99999 99999 99999 02654 00566 
00125 00024 99999 99999 
086210 059 2006 03 09 23 56 50 +19.70 +98.98   2.27 79.68
99999 99999 00836 00074 99999 99999 99999 99999 99999 99999 99999 99999 
00601 00053 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00844 00117 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00370 00053 99999 99999 99999 99999 02555 00542 
00121 00023 99999 99999 
086414 059 2006 03 09 24 00 15 +19.70 +98.98   2.27 80.48
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 
00519 00098 99999 99999 99999 99999 99999 99999 00116 00025 99999 99999 
99999 99999 99999 99999 
086659 059 2006 03 09 24 04 19 +19.70 +98.98   2.27 81.51
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 
00527 00100 99999 99999 99999 99999 99999 99999 00116 00025 99999 99999 
99999 99999 99999 99999 
