55 2160
McElroy, Tom;Midwinter, Clive;Barton, David;Hall, Bob;Kerr, James;Wardle, David
ENVIRONMENT CANADA, Dowsview, Ontario, CANADA  M3H 5T4    (416) 739-4630
Brewer Ozone Spectrophotometer data at Fairbanks  (  64.84,  147.56)
POLARIS
1 1
1997 08 14 1997 08 14
0
13
elapsed time in UT seconds from 0000 hours on the day given in DATE
Station name
9
1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0 1.0
99 99 99 999 999 999 999 999 999
hour
minute
second
airmass
ozone        [DU]  (Dobson Units)
ozone error  [DU]  (Dobson Units)
SO2          [DU]  (Dobson Units)
SO2 error    [DU]  (Dobson Units)
Number of data points in row
9
0
1  1  1  1  1  1  1  1  1
99 9999 999 999 99999 999 999 999 999
number of observations
instrument number
station latitude (degrees)
station longitude (degrees)
station elevation (m)
daily mean O3        [DU] (Dobson Units)
daily mean O3 error  [DU] (Dobson Units)
daily mean SO2       [DU] (Dobson Units)
daily mean SO2 error [DU] (Dobson Units)
1
*** preliminary data ***
16
The Brewer Ozone Spectrophotometer is a 15-cm focal-length, modified
Ebert-Fastie spectrograph which makes rapid, time-multiplexed
measurements in the UV-B region of the solar spectrum.  A typical
direct sun observation is the average of 5 separate observations.
If the standard deviation of the measurements is less than 2 DU, the
measurement is taken as acceptable.  If the standard deviation is larger,
it is interpreted as indicating variability of the solar intensity, i.e.:
clouds or other optical attenuation.  Each of the five ozone
measurements which contributes to the average value are composed of 40 
short observation samples.  A cycle of 2 samples on each of the five 
wavelengths takes place in about 1.2 seconds.  The usual measurement of 
20 cycles takes under 30 seconds.  Daily averages are calcluted using 
all good observations and are reported as the last line in the data 
table.


Fairbanks 
14 007   64.84  147.56     0.0  283.7    6.5    3.8    1.9
73190   20 19 50  1.660  287.2     3.3    1.3     0.8     5
73876   20 31 16  1.639  287.2     4.0    1.8     0.9     5
74400   20 40 00  1.625  287.1     3.1    2.6     0.7     5
75087   20 51 27  1.609  287.5     4.8    1.8     1.5     5
83051   23 04 11  1.619  288.3     0.8    3.8     0.2     5
84026   23 20 26  1.644  285.6     1.5    4.1     0.4     5
84540   23 29 00  1.660  285.9     2.2    4.0     0.5     5
85227   23 40 27  1.684  279.7     1.4    5.2     0.4     5
86201   23 56 41  1.724  281.8     0.9    4.6     0.1     5
86719   00 05 19  1.749  282.8     2.1    4.6     0.6     5
88327   00 32 07  1.838  263.0     1.9    8.4     0.4     5
88826   00 40 26  1.871  279.6     3.3    4.9     0.8     5
89509   00 51 49  1.921  284.4     1.7    4.5     0.4     5
97103   02 58 23  3.031  291.0     0.9    1.2     0.3     5