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:20060303
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 

056925 062 2006 03 03 15 48 46 +19.70 +98.98   2.27 51.50
00679 00053 99999 99999 00218 00018 99999 99999 00352 00048 01865 00294 
99999 99999 99999 99999 09720 02461 99999 99999 99999 99999 00385 00033 
00424 00044 99999 99999 99999 99999 99999 99999 01452 00246 00814 00117 
00532 00101 00335 00048 99999 99999 00352 00079 00114 00024 99999 99999 
99999 99999 99999 99999 
057463 062 2006 03 03 15 57 43 +19.70 +98.98   2.27 49.62
00797 00064 99999 99999 00243 00020 99999 99999 00329 00042 01913 00303 
99999 99999 99999 99999 09691 02192 99999 99999 99999 99999 00384 00033 
00423 00044 99999 99999 99999 99999 99999 99999 01929 00345 00807 00116 
00514 00096 00336 00048 99999 99999 00364 00082 00114 00024 99999 99999 
99999 99999 99999 99999 
057745 062 2006 03 03 16 02 25 +19.70 +98.98   2.27 48.64
99999 99999 00867 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00722 00064 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00766 00109 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00228 00031 99999 99999 99999 99999 00503 00102 
00112 00021 01430 00191 
058070 062 2006 03 03 16 07 51 +19.70 +98.98   2.27 47.53
99999 99999 00864 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00766 00069 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00760 00108 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00227 00031 99999 99999 99999 99999 00161 00054 
00114 00022 01430 00191 
058695 062 2006 03 03 16 18 15 +19.70 +98.98   2.27 45.43
00579 00044 99999 99999 00208 00017 99999 99999 00314 00040 01814 00283 
99999 99999 99999 99999 09221 02240 99999 99999 99999 99999 00384 00033 
00425 00044 99999 99999 99999 99999 99999 99999 01570 00272 00806 00116 
00490 00090 00336 00048 99999 99999 00355 00080 00114 00024 99999 99999 
99999 99999 99999 99999 
059470 062 2006 03 03 16 31 10 +19.70 +98.98   2.27 42.88
00660 00051 99999 99999 00232 00019 99999 99999 00317 00041 01747 00269 
99999 99999 99999 99999 08888 02241 99999 99999 99999 99999 00384 00033 
00424 00044 99999 99999 99999 99999 99999 99999 01671 00293 00790 00113 
00483 00088 00336 00048 99999 99999 00360 00081 00112 00024 99999 99999 
99999 99999 99999 99999 
059729 062 2006 03 03 16 35 29 +19.70 +98.98   2.27 42.04
99999 99999 00864 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00779 00070 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00755 00107 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00247 00034 99999 99999 99999 99999 00193 00054 
00110 00021 01430 00191 
061872 062 2006 03 03 17 11 12 +19.70 +98.98   2.27 35.63
00591 00045 99999 99999 00177 00015 99999 99999 00331 00042 01926 00303 
99999 99999 99999 99999 10054 02626 99999 99999 99999 99999 00385 00033 
00427 00044 99999 99999 99999 99999 99999 99999 01550 00264 00798 00115 
00514 00096 00336 00048 99999 99999 00350 00078 00113 00024 99999 99999 
99999 99999 99999 99999 
063622 062 2006 03 03 17 40 22 +19.70 +98.98   2.27 31.24
00703 00055 99999 99999 00193 00016 99999 99999 00365 00050 01756 00269 
99999 99999 99999 99999 08695 02289 99999 99999 99999 99999 00385 00033 
00424 00044 99999 99999 99999 99999 99999 99999 01519 00256 00769 00110 
00522 00099 00337 00048 99999 99999 00345 00077 00115 00024 99999 99999 
99999 99999 99999 99999 
063863 062 2006 03 03 17 44 23 +19.70 +98.98   2.27 30.73
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00862 00079 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00735 00104 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00293 00041 99999 99999 99999 99999 00114 00048 
00116 00022 01430 00191 
072306 062 2006 03 03 20 05 06 +19.70 +98.98   2.27 32.39
00786 00063 99999 99999 00200 00016 99999 99999 00352 00047 01506 00227 
99999 99999 99999 99999 08143 02802 99999 99999 99999 99999 00384 00033 
00424 00044 99999 99999 99999 99999 99999 99999 01359 00230 00827 00118 
00524 00099 00337 00048 99999 99999 00348 00078 00107 00022 99999 99999 
99999 99999 99999 99999 
072531 062 2006 03 03 20 08 51 +19.70 +98.98   2.27 32.93
99999 99999 00864 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00932 00087 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00754 00107 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00525 00078 99999 99999 99999 99999 01051 00224 
00105 00020 01430 00191 
074043 062 2006 03 03 20 34 03 +19.70 +98.98   2.27 36.98
99999 99999 00868 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00961 00090 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00762 00108 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00490 00073 99999 99999 99999 99999 01262 00271 
00102 00019 01430 00191 
074247 062 2006 03 03 20 37 27 +19.70 +98.98   2.27 37.58
00829 00067 99999 99999 00215 00017 99999 99999 00349 00047 01572 00236 
99999 99999 99999 99999 08543 02924 99999 99999 99999 99999 00384 00033 
00425 00044 99999 99999 99999 99999 99999 99999 01367 00230 00833 00119 
00515 00097 00337 00048 99999 99999 00350 00078 00108 00023 99999 99999 
99999 99999 99999 99999 
074470 062 2006 03 03 20 41 10 +19.70 +98.98   2.27 38.23
00889 00073 99999 99999 853840000 311617447 99999 99999 00359 00047 01516 00229 
99999 99999 99999 99999 08539 03117 99999 99999 99999 99999 00385 00033 
00425 00044 99999 99999 99999 99999 99999 99999 01361 00232 00853 00121 
00551 00106 00336 00048 99999 99999 00343 00077 00107 00023 99999 99999 
99999 99999 99999 99999 
076692 062 2006 03 03 21 18 12 +19.70 +98.98   2.27 45.27
99999 99999 00867 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00938 00087 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00777 00111 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00433 00064 99999 99999 99999 99999 01630 00351 
00104 00020 01430 00191 
078211 062 2006 03 03 21 43 31 +19.70 +98.98   2.27 50.46
00630 00049 99999 99999 00197 00016 99999 99999 00324 00041 01529 00231 
99999 99999 99999 99999 09863 03328 99999 99999 99999 99999 00385 00033 
00426 00044 99999 99999 99999 99999 99999 99999 01358 00231 00856 00122 
00503 00093 00336 00048 99999 99999 00344 00077 00111 00024 99999 99999 
99999 99999 99999 99999 
080470 062 2006 03 03 22 21 10 +19.70 +98.98   2.27 58.55
99999 99999 00870 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00850 00077 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00806 00115 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00491 00074 99999 99999 99999 99999 01717 00367 
00109 00021 01430 00191 
081963 062 2006 03 03 22 46 03 +19.70 +98.98   2.27 64.06
99999 99999 00867 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00811 00073 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00824 00117 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00426 00063 99999 99999 99999 99999 01832 00392 
00105 00020 01430 00191 
082722 062 2006 03 03 22 58 42 +19.70 +98.98   2.27 66.90
00163 00033 99999 99999 00203 00017 99999 99999 00313 00040 01541 00234 
99999 99999 99999 99999 14523 03817 99999 99999 99999 99999 00391 00034 
00426 00044 99999 99999 99999 99999 99999 99999 01269 00221 00880 00124 
00554 00107 00321 00045 99999 99999 00347 00077 00116 00025 99999 99999 
99999 99999 99999 99999 
084901 062 2006 03 03 23 35 01 +19.70 +98.98   2.27 75.17
99999 99999 00860 00076 99999 99999 99999 99999 99999 99999 99999 99999 
00751 00067 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00888 00125 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00401 00058 99999 99999 99999 99999 01606 00335 
00106 00020 01431 00191 
085391 062 2006 03 03 23 43 11 +19.70 +98.98   2.27 77.05
99999 99999 00868 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00744 00066 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00905 00127 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00400 00058 99999 99999 99999 99999 01854 00388 
00107 00020 01431 00191 
085642 062 2006 03 03 23 47 22 +19.70 +98.98   2.27 78.01
00197 00040 99999 99999 00222 00022 99999 99999 00319 00040 01546 00239 
99999 99999 99999 99999 14882 03519 99999 99999 99999 99999 99999 99999 
00428 00045 99999 99999 99999 99999 99999 99999 01304 00237 00860 00120 
00594 00117 00332 00047 99999 99999 00357 00078 00121 00026 99999 99999 
99999 99999 99999 99999 
086251 062 2006 03 03 23 57 31 +19.70 +98.98   2.27 80.35
00109 00036 99999 99999 00164 00025 99999 99999 00313 00043 01575 00246 
99999 99999 99999 99999 16343 03491 99999 99999 99999 99999 99999 99999 
00431 00045 99999 99999 99999 99999 99999 99999 01276 00244 00844 00121 
00600 00119 00319 00045 99999 99999 99999 99999 00120 00026 99999 99999 
99999 99999 99999 99999 
086792 062 2006 03 03 24 06 32 +19.70 +98.98   2.27 82.53
99999 99999 00844 00075 99999 99999 99999 99999 99999 99999 99999 99999 
00710 00063 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00938 00130 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00405 00059 99999 99999 99999 99999 02589 00549 
00107 00020 01431 00191 
087008 062 2006 03 03 24 10 08 +19.70 +98.98   2.27 83.36
00156 00029 99999 99999 00168 00029 99999 99999 00299 00049 01562 00246 
99999 99999 99999 99999 17705 03101 99999 99999 99999 99999 99999 99999 
00438 00046 99999 99999 99999 99999 99999 99999 99999 99999 00807 00117 
00608 00121 00168 00029 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 
087292 062 2006 03 03 24 14 52 +19.70 +98.98   2.27 84.48
00172 00040 99999 99999 00168 00020 99999 99999 00293 00046 01567 00247 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00439 00046 99999 99999 99999 99999 99999 99999 99999 99999 00805 00117 
99999 99999 00311 00043 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 
087502 062 2006 03 03 24 18 22 +19.70 +98.98   2.27 85.27
99999 99999 00848 00076 99999 99999 99999 99999 99999 99999 99999 99999 
00598 00052 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00923 00125 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00411 00060 99999 99999 99999 99999 02306 00481 
00108 00020 01431 00191 
087949 062 2006 03 03 24 25 49 +19.70 +98.98   2.27 87.06
00496 00042 99999 99999 00043 00018 99999 99999 99999 99999 01568 00249 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00439 00046 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00043 00018 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 
088415 062 2006 03 03 24 33 36 +19.70 +98.98   2.27 88.86
00130 00049 99999 99999 00308 00026 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00438 00046 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 
