<s>
SYNOP	B-Application
(	O
surface	O
synoptic	O
observations	O
)	O
is	O
a	O
numerical	O
code	O
(	O
called	O
FM-12	O
by	O
WMO	O
)	O
used	O
for	O
reporting	O
weather	O
observations	O
made	O
by	O
staffed	O
and	O
automated	O
weather	O
stations	O
.	O
</s>
<s>
SYNOP	B-Application
reports	O
are	O
typically	O
sent	O
every	O
six	O
hours	O
by	O
Deutscher	O
Wetterdienst	O
on	O
shortwave	O
and	O
low	B-Algorithm
frequency	I-Algorithm
using	O
RTTY	O
.	O
</s>
<s>
It	O
can	O
be	O
decoded	O
by	O
open-source	O
software	O
such	O
as	O
seaTTY	O
,	O
metaf2xml	O
or	O
Fldigi	B-Protocol
.	O
</s>
<s>
SYNOP	B-Application
information	O
is	O
collected	O
by	O
more	O
than	O
7600	O
manned	O
and	O
unmanned	O
meteorological	O
stations	O
and	O
more	O
than	O
2500	O
mobile	O
stations	O
around	O
the	O
world	O
and	O
is	O
used	O
for	O
weather	O
forecasting	O
and	O
climatic	O
statistics	O
.	O
</s>
<s>
Following	O
is	O
the	O
general	O
structure	O
of	O
a	O
SYNOP	B-Application
message	O
.	O
</s>
<s>
This	O
enables	O
Synop	B-Application
,	O
Metar	O
,	O
upperair	O
and	O
satellite	O
data	O
to	O
be	O
processed	O
by	O
a	O
common	O
computer	O
system	O
.	O
</s>
<s>
The	O
short	O
wave	O
radio	O
transmission	O
of	O
Synop	B-Application
data	O
was	O
common	O
in	O
the	O
1980s	O
from	O
Bracknell	O
or	O
Paris	O
but	O
this	O
is	O
now	O
redundant	O
.	O
</s>
<s>
Synop	B-Application
data	O
is	O
available	O
as	O
downloadable	O
files	O
from	O
a	O
number	O
of	O
internet	O
sites	O
including	O
the	O
College	O
of	O
DuPage	O
.	O
</s>
