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 07 03 1997 07 03
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
37 007 64.84 147.56 0.0 322.5 3.5 4.5 2.3
58840 16 20 40 2.464 321.6 1.2 1.0 0.4 5
59354 16 29 14 2.381 320.1 1.8 1.1 0.6 5
59867 16 37 47 2.304 319.4 0.6 1.4 0.2 5
60993 16 56 33 2.152 316.5 1.5 2.5 0.7 5
61512 17 05 12 2.090 317.9 1.3 2.7 0.3 5
62031 17 13 51 2.032 320.1 2.9 1.7 0.7 5
64092 17 48 12 1.836 319.5 3.1 2.4 1.1 5
65986 18 19 46 1.696 317.6 1.6 4.5 0.6 5
67071 18 37 51 1.630 319.3 2.1 4.6 0.5 5
67757 18 49 17 1.593 316.6 1.6 5.6 0.5 5
68443 19 00 43 1.560 320.0 1.3 5.1 0.5 5
70270 19 31 10 1.484 325.4 0.9 3.6 0.2 5
71244 19 47 24 1.451 325.0 1.0 4.6 0.2 5
71758 19 55 58 1.436 324.0 1.7 5.2 0.6 5
72439 20 07 19 1.417 326.0 1.2 5.7 0.4 5
73411 20 23 31 1.395 326.6 1.4 6.5 0.4 5
73924 20 32 04 1.384 327.2 1.8 6.6 0.5 5
74605 20 43 25 1.372 325.4 1.6 7.2 0.4 5
75578 20 59 38 1.358 324.5 1.8 6.9 0.5 5
76091 21 08 11 1.353 321.0 1.8 8.0 0.4 5
76772 21 19 32 1.347 322.9 1.2 7.6 0.5 5
77745 21 35 45 1.341 322.3 2.8 7.8 0.7 5
78258 21 44 18 1.339 320.0 1.8 8.7 0.5 5
80293 22 18 13 1.342 322.7 1.1 5.5 0.4 5
81265 22 34 25 1.349 321.9 1.4 6.1 0.3 5
81778 22 42 58 1.354 323.0 1.4 5.6 0.6 5
82459 22 54 19 1.363 320.6 2.6 5.8 0.7 5
83433 23 10 33 1.378 321.3 3.6 5.7 0.9 5
84576 23 29 36 1.400 314.5 4.9 6.1 0.8 5
85529 23 45 29 1.424 325.0 3.0 4.3 0.6 5
86058 23 54 18 1.439 322.9 2.4 4.9 0.8 5
91482 01 24 42 1.681 327.7 3.1 2.5 0.8 5
92002 01 33 22 1.715 326.1 1.6 2.5 1.2 5
93668 02 01 08 1.840 328.4 1.9 1.8 0.4 5
94187 02 09 47 1.885 328.0 1.1 1.8 0.4 5
94874 02 21 14 1.950 326.8 1.9 2.0 0.7 5
102517 04 28 37 3.275 324.8 4.8 -0.5 2.8 5
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