EVALUATION OF INFORMATION
Start Up Date 10 AUG 97 11:25 GMT
System test passed - No errors found
Sounding program REV 7.10 with Omega windfinding
Station
: 02313
Location
: 60.28 N 24.88 E 28 m above mean sea level
RS-number: 042873251
Started at
: 10 AUG 97 11:48 GMT
T i m e
Hgt/MSL
Pressure
Temp
R H
D e w p
R I
M R I
Hgt/MSL
D i r
Speed
min s
m / M S L
h P a
d e g C
%
d e g C
ft/MSL
deg
k t s
0
0
0
9
9
6 .
4
11.3
8
7
9 .
2
3
2
5
3
2
5
0
307
2.2
0
5
3
3
9
9
2 .
4
1
1 .
1
8
4
8 .
5
3
2
2
3
2
7
108
267
1
4 .
0
0
1
0
6
3
9
8
8 .
8
1
0 .
9
8
2
8 .
0
3
1
9
3
2
9
2
0
7
2
6
7
1
4 .
0
0
1
5
9
2
9
8
5 .
4
1
0 .
7
8
1
7 .
6
3
1
7
3
3
2
3
0
2
2
6
7
1
4 .
2
NOTE: Printout continues - every 5-10 seconds until end of sounding, @90 minutes
Data is continuously monitored by the data
processor during the sounding, with significant levels
for temperature, humidity, and winds selected by the
computer. The radiosonde readings will automatically
print out in 5-second intervals in the first few minutes of
the sounding, as shown in table 1-1, and then change to
IO-second intervals.
All data are automatically processed. An increase
in pressure is interpreted as a balloon burst, and the
sounding will automatically terminate. Failure of the
pressure to decrease is Interpreted as a “floating
balloon,” and this will also terminate the sounding.
Other factors that will cause sounding termination are
pressure values missing for more than 10 minutes,
temperature data missing for more than 8 minutes, and
humidity data missing for more than 6 minutes. Manual
termination of the sounding may be made via the
command entry keys.
All U.S. synoptic upper-air sites arc required to
launch a second radiosonde should the first radiosonde
fail to reach a height of at least 400 hPa. Navy and
Marine Corps upper-air soundings conducted for
operational support are exempt from this requirement.
All raw data printed out during the flight should be
scanned for validity. Continuous output of erroneous
data will obviously necessitate another launch. Any
periods of doubtful data should be encoded as such on
the transmitted message. Prolonged periods of doubtful
or missing pressure, temperature, humidity, or wind
data may also Invalidate the sounding. Criteria IS
outlined in chapter 3 of the FMH-3.
CAUTION
Pressing the "reset" command at any time
will completely dump all sounding data and
reset the program to the beginning of the set-up
routine.
After the sounding is terminated, the system may be
directed to print a listing ("LIST" program) of
significant levels (table 1-2), which were selected by the
computer for changes in temperature, humidity, or
winds, and a listing of all mandatory levels (table 1-3).
In addition, the "TEMP" program will produce a
printout of the TEMP coded report (table 1-4).
Abbreviations on the significant level printout indicate
the reason the level was selected, such as T for
temperature, U for relative humidity. TR for tropopause.
F for wind speed, D for wind direction, and MV for
maximum wind
Table 1-1.—-MRS Sounding Automatic Data Printout
1-11
