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:20060301
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 

057649 060 2006 03 01 16 00 49 +19.70 +98.98   2.27 49.49
03334 00469 99999 99999 00141 00013 99999 99999 00349 00049 01824 00287 
99999 99999 99999 99999 35563 07656 99999 99999 99999 99999 00384 00033 
00430 00045 99999 99999 99999 99999 99999 99999 01125 00163 00873 00124 
00488 00090 00334 00047 99999 99999 00355 00080 00116 00025 99999 99999 
99999 99999 99999 99999 
057887 060 2006 03 01 16 04 47 +19.70 +98.98   2.27 48.68
99999 99999 00870 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00768 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 00372 00054 99999 99999 99999 99999 01390 00296 
00112 00021 01430 00191 
058152 060 2006 03 01 16 09 12 +19.70 +98.98   2.27 47.76
03366 00474 99999 99999 00154 00013 99999 99999 00358 00052 01868 00295 
99999 99999 99999 99999 36010 07778 99999 99999 99999 99999 00384 00033 
00429 00045 99999 99999 99999 99999 99999 99999 01193 00174 00900 00128 
00503 00094 00337 00048 99999 99999 00353 00079 00115 00025 99999 99999 
99999 99999 99999 99999 
058347 060 2006 03 01 16 12 27 +19.70 +98.98   2.27 47.12
99999 99999 00872 00078 99999 99999 99999 99999 99999 99999 99999 99999 
00818 00074 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00759 00108 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00373 00054 99999 99999 99999 99999 01291 00276 
00110 00021 01430 00191 
058595 060 2006 03 01 16 16 35 +19.70 +98.98   2.27 46.27
03346 00471 99999 99999 00117 00012 99999 99999 00343 00048 01858 00294 
99999 99999 99999 99999 35500 07650 99999 99999 99999 99999 00384 00033 
00431 00045 99999 99999 99999 99999 99999 99999 01145 00166 00874 00125 
00491 00090 00335 00048 99999 99999 00355 00080 00122 00026 99999 99999 
99999 99999 99999 99999 
059216 060 2006 03 01 16 26 56 +19.70 +98.98   2.27 44.25
03349 00472 99999 99999 00176 00015 99999 99999 00356 00050 01790 00279 
99999 99999 99999 99999 35023 07541 99999 99999 99999 99999 00383 00033 
00428 00044 99999 99999 99999 99999 99999 99999 01298 00189 00880 00126 
00486 00089 00335 00048 99999 99999 00353 00079 00117 00025 99999 99999 
99999 99999 99999 99999 
059428 060 2006 03 01 16 30 29 +19.70 +98.98   2.27 43.57
99999 99999 00866 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00771 00069 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00753 00107 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00371 00054 99999 99999 99999 99999 01171 00248 
00115 00022 01430 00191 
059672 060 2006 03 01 16 34 32 +19.70 +98.98   2.27 42.79
99999 99999 00868 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00771 00069 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00751 00107 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00371 00054 99999 99999 99999 99999 01304 00278 
00111 00021 01430 00191 
059880 060 2006 03 01 16 38 00 +19.70 +98.98   2.27 42.14
03356 00473 99999 99999 00197 00016 99999 99999 00358 00052 01858 00292 
99999 99999 99999 99999 34702 07457 99999 99999 99999 99999 00385 00033 
00429 00045 99999 99999 99999 99999 99999 99999 00989 00147 00870 00124 
00495 00091 00336 00048 99999 99999 00350 00078 00117 00025 99999 99999 
99999 99999 99999 99999 
060032 060 2006 03 01 16 40 32 +19.70 +98.98   2.27 41.66
03349 00472 99999 99999 00180 00015 99999 99999 00358 00051 01857 00292 
99999 99999 99999 99999 34873 07499 99999 99999 99999 99999 00385 00033 
00429 00045 99999 99999 99999 99999 99999 99999 01250 00188 00873 00124 
00493 00091 00335 00048 99999 99999 00351 00079 00117 00025 99999 99999 
99999 99999 99999 99999 
062164 060 2006 03 01 17 16 04 +19.70 +98.98   2.27 35.48
00243 00028 99999 99999 00227 00018 99999 99999 00344 00045 01902 00300 
99999 99999 99999 99999 34474 07417 99999 99999 99999 99999 00384 00033 
00428 00045 99999 99999 99999 99999 99999 99999 01651 00247 00847 00122 
00519 00098 00339 00048 99999 99999 00344 00077 00121 00026 99999 99999 
99999 99999 99999 99999 
062437 060 2006 03 01 17 20 37 +19.70 +98.98   2.27 34.76
99999 99999 00846 00075 99999 99999 99999 99999 99999 99999 99999 99999 
00802 00073 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00731 00104 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00368 00053 99999 99999 99999 99999 01136 00239 
00110 00021 01430 00191 
062746 060 2006 03 01 17 25 46 +19.70 +98.98   2.27 33.99
00310 00028 99999 99999 00156 00013 99999 99999 00326 00042 01851 00290 
99999 99999 99999 99999 33007 07009 99999 99999 99999 99999 00383 00033 
00430 00045 99999 99999 99999 99999 99999 99999 01380 00208 00875 00126 
00513 00096 00336 00048 99999 99999 00352 00079 00124 00027 99999 99999 
99999 99999 99999 99999 
064624 060 2006 03 01 17 57 04 +19.70 +98.98   2.27 29.99
03418 00483 99999 99999 00213 00017 99999 99999 00302 00041 01716 00262 
99999 99999 99999 99999 31293 06653 99999 99999 99999 99999 00386 00033 
00430 00045 99999 99999 99999 99999 99999 99999 01603 00244 00859 00123 
00455 00081 00342 00049 99999 99999 00339 00076 00115 00024 99999 99999 
99999 99999 99999 99999 
082304 060 2006 03 01 22 51 44 +19.70 +98.98   2.27 65.57
99999 99999 00889 00079 99999 99999 99999 99999 99999 99999 99999 99999 
00841 00076 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00823 00117 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00381 00055 99999 99999 99999 99999 01812 00386 
00106 00020 01430 00191 
082599 060 2006 03 01 22 56 39 +19.70 +98.98   2.27 66.67
00170 00043 99999 99999 00233 00019 99999 99999 00355 00047 01564 00239 
99999 99999 99999 99999 22886 06261 99999 99999 99999 99999 00389 00034 
00429 00045 99999 99999 99999 99999 99999 99999 01641 00249 00892 00125 
00513 00096 00343 00048 99999 99999 00303 00066 00129 00027 99999 99999 
99999 99999 99999 99999 
082856 060 2006 03 01 23 00 56 +19.70 +98.98   2.27 67.63
00172 00045 99999 99999 00202 00016 99999 99999 00352 00046 01567 00239 
99999 99999 99999 99999 22290 06173 99999 99999 99999 99999 00377 00033 
00428 00044 99999 99999 99999 99999 99999 99999 01679 00262 00892 00125 
00518 00098 00356 00050 99999 99999 00295 00064 00179 00039 99999 99999 
99999 99999 99999 99999 
083122 060 2006 03 01 23 05 22 +19.70 +98.98   2.27 68.63
99999 99999 00899 00080 99999 99999 99999 99999 99999 99999 99999 99999 
00815 00073 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00840 00119 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00384 00056 99999 99999 99999 99999 01768 00375 
00106 00020 01430 00191 
084641 060 2006 03 01 23 30 41 +19.70 +98.98   2.27 74.38
04029 00568 99999 99999 00215 00020 99999 99999 00328 00042 01553 00239 
99999 99999 99999 99999 23398 06312 99999 99999 99999 99999 00403 00057 
00429 00045 99999 99999 99999 99999 99999 99999 01479 00214 00888 00125 
00504 00094 00403 00057 99999 99999 00347 00077 00182 00039 99999 99999 
99999 99999 99999 99999 
084800 060 2006 03 01 23 33 20 +19.70 +98.98   2.27 74.98
03531 00487 99999 99999 00183 00016 99999 99999 00326 00042 01546 00238 
99999 99999 99999 99999 22802 06031 99999 99999 99999 99999 00354 00049 
00428 00044 99999 99999 99999 99999 99999 99999 01557 00237 00889 00125 
00511 00096 00354 00049 99999 99999 00377 00084 00148 00031 99999 99999 
99999 99999 99999 99999 
085007 060 2006 03 01 23 36 47 +19.70 +98.98   2.27 75.79
99999 99999 00880 00078 99999 99999 99999 99999 99999 99999 99999 99999 
00711 00062 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00859 00120 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00376 00054 99999 99999 99999 99999 01436 00298 
00111 00021 01430 00191 
085156 060 2006 03 01 23 39 16 +19.70 +98.98   2.27 76.37
99999 99999 00884 00079 99999 99999 99999 99999 99999 99999 99999 99999 
00713 00063 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00863 00121 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00376 00054 99999 99999 99999 99999 01419 00294 
00108 00020 01430 00191 
085438 060 2006 03 01 23 43 58 +19.70 +98.98   2.27 77.42
03467 00485 99999 99999 00212 00018 99999 99999 00333 00043 01526 00235 
99999 99999 99999 99999 22047 04997 99999 99999 99999 99999 00347 00049 
00431 00045 99999 99999 99999 99999 99999 99999 01671 00265 00868 00122 
00501 00093 00347 00049 99999 99999 00354 00078 00158 00034 99999 99999 
99999 99999 99999 99999 
085658 060 2006 03 01 23 47 38 +19.70 +98.98   2.27 78.26
00129 00058 99999 99999 00194 00017 99999 99999 00333 00043 01527 00236 
99999 99999 99999 99999 22142 05856 99999 99999 99999 99999 00013 00006 
00428 00045 99999 99999 99999 99999 99999 99999 01552 00236 00875 00123 
00511 00095 00325 00044 99999 99999 00379 00084 00132 00027 99999 99999 
99999 99999 99999 99999 
086000 060 2006 03 01 23 53 20 +19.70 +98.98   2.27 79.57
00140 00058 99999 99999 00207 00019 99999 99999 00335 00043 01519 00235 
99999 99999 99999 99999 21811 06182 99999 99999 99999 99999 99999 99999 
00427 00044 99999 99999 99999 99999 99999 99999 01545 00233 00868 00121 
00513 00096 99999 99999 99999 99999 00379 00084 00178 00038 99999 99999 
99999 99999 99999 99999 
086372 060 2006 03 01 23 59 32 +19.70 +98.98   2.27 81.00
99999 99999 00881 00078 99999 99999 99999 99999 99999 99999 99999 99999 
00701 00062 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00907 00125 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00386 00056 99999 99999 99999 99999 01451 00299 
00104 00020 01431 00191 
086604 060 2006 03 01 24 03 25 +19.70 +98.98   2.27 81.99
00146 00048 99999 99999 00193 00019 99999 99999 00313 00045 01515 00236 
99999 99999 99999 99999 22350 05057 99999 99999 99999 99999 99999 99999 
00433 00045 99999 99999 99999 99999 99999 99999 99999 99999 00835 00119 
00536 00102 00193 00019 99999 99999 99999 99999 00168 00034 99999 99999 
99999 99999 99999 99999 
086908 060 2006 03 01 24 08 28 +19.70 +98.98   2.27 83.16
00100 00055 99999 99999 00134 00016 99999 99999 00312 00044 01515 00237 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00432 00045 99999 99999 99999 99999 99999 99999 99999 99999 00820 00117 
00489 00090 00134 00016 99999 99999 99999 99999 00180 00037 99999 99999 
99999 99999 99999 99999 
087108 060 2006 03 01 24 11 48 +19.70 +98.98   2.27 83.93
99999 99999 00859 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00675 00059 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00903 00123 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00383 00055 99999 99999 99999 99999 01553 00318 
00103 00019 01431 00191 
087403 060 2006 03 01 24 16 44 +19.70 +98.98   2.27 85.08
99999 99999 00865 00077 99999 99999 99999 99999 99999 99999 99999 99999 
00618 00054 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00896 00121 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00393 00057 99999 99999 99999 99999 01658 00340 
00103 00019 01431 00191 
087636 060 2006 03 01 24 20 36 +19.70 +98.98   2.27 85.97
00421 00036 99999 99999 00029 00018 99999 99999 00277 00042 01534 00242 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00438 00046 99999 99999 99999 99999 99999 99999 99999 99999 00764 00110 
99999 99999 00029 00018 99999 99999 99999 99999 00164 00035 99999 99999 
99999 99999 99999 99999 
087885 060 2006 03 01 24 24 45 +19.70 +98.98   2.27 86.93
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00617 00055 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 00868 00115 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 00396 00057 99999 99999 99999 99999 01528 00309 
00103 00019 99999 99999 
088091 060 2006 03 01 24 28 11 +19.70 +98.98   2.27 87.73
01733 00164 99999 99999 99999 99999 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 
088249 060 2006 03 01 24 30 49 +19.70 +98.98   2.27 88.34
00994 00086 99999 99999 00140 00014 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00436 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 
088387 060 2006 03 01 24 33 07 +19.70 +98.98   2.27 88.91
02027 00218 99999 99999 00203 00022 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
00437 00046 99999 99999 99999 99999 99999 99999 99999 99999 99999 99999 
99999 99999 99999 99999 99999 99999 00436 00046 99999 99999 99999 99999 
99999 99999 99999 99999 
