<s>
A	O
meteogram	B-Application
,	O
also	O
known	O
as	O
a	O
meteorogram	O
,	O
is	O
a	O
graphical	O
presentation	O
of	O
one	O
or	O
more	O
meteorological	O
variables	O
with	O
respect	O
to	O
time	O
,	O
whether	O
observed	O
or	O
forecast	O
,	O
for	O
a	O
particular	O
location	O
.	O
</s>
<s>
Where	O
forecast	O
data	O
is	O
used	O
,	O
the	O
meteogram	B-Application
will	O
typically	O
be	O
generated	O
directly	O
from	O
a	O
weather	O
forecasting	O
model	O
based	O
on	O
the	O
longitude	O
,	O
latitude	O
and	O
elevation	O
of	O
the	O
location	O
,	O
but	O
it	O
can	O
also	O
be	O
corrected	O
by	O
a	O
meteorologist	O
.	O
</s>
<s>
Where	O
a	O
meteogram	B-Application
is	O
used	O
to	O
display	O
historical	O
weather	O
observations	O
,	O
this	O
will	O
typically	O
be	O
for	O
a	O
specific	O
weather	O
station	O
.	O
</s>
<s>
In	O
the	O
meteogram	B-Application
,	O
time	O
is	O
plotted	O
along	O
the	O
X	O
axis	O
,	O
while	O
the	O
values	O
of	O
the	O
different	O
weather	O
parameters	O
are	O
plotted	O
along	O
the	O
Y	O
axis	O
.	O
</s>
<s>
The	O
most	O
common	O
weather	O
parameters	O
in	O
a	O
meteogram	B-Application
are	O
precipitation	O
,	O
temperature	O
,	O
air	O
pressure	O
,	O
cloud	O
cover	O
,	O
wind	O
speed	O
and	O
wind	O
direction	O
,	O
such	O
as	O
in	O
provided	O
as	O
part	O
of	O
a	O
weather	O
forecast	O
by	O
yr.no	O
.	O
</s>
<s>
The	O
meteogram	B-Application
is	O
one	O
application	O
of	O
the	O
time-series	O
graph	O
.	O
</s>
<s>
It	O
is	O
a	O
simple	O
extension	O
to	O
project	O
these	O
variables	O
into	O
the	O
future	O
using	O
data	O
from	O
the	O
forecast	O
models	O
and	O
produce	O
the	O
modern	O
meteogram	B-Application
.	O
</s>
<s>
So	O
,	O
meteograms	B-Application
have	O
evolved	O
to	O
mean	O
any	O
group	O
of	O
meteorological	O
variables	O
graphed	O
with	O
respect	O
to	O
time	O
,	O
whether	O
observed	O
or	O
forecast	O
,	O
usually	O
confined	O
to	O
surface	O
variables	O
,	O
though	O
some	O
include	O
time-height	O
charts	O
.	O
</s>
<s>
Meteogram	B-Application
use	O
increased	O
in	O
the	O
1990s	O
with	O
the	O
growth	O
of	O
computing	O
power	O
.	O
</s>
<s>
Now	O
meteograms	B-Application
are	O
created	O
from	O
various	O
models	O
and	O
made	O
available	O
to	O
forecasters	O
through	O
the	O
Internet	O
.	O
</s>
<s>
In	O
addition	O
,	O
researchers	O
and	O
operational	O
forecasters	O
have	O
the	O
capability	O
to	O
make	O
meteograms	B-Application
for	O
their	O
local	O
use	O
on	O
their	O
local	O
computing	O
systems	O
.	O
</s>
<s>
The	O
shorter	O
spelling	O
meteogram	B-Application
was	O
apparently	O
first	O
used	O
in	O
the	O
1980s	O
in	O
the	O
then-popular	O
WXP	B-Application
(	O
Weather	O
Processor	O
)	O
computer	O
program	O
,	O
by	O
its	O
primary	O
developer	O
,	O
Dan	O
Vietor	O
.	O
</s>
