<s>
The	O
Climate	B-Application
Forecast	I-Application
System	I-Application
or	O
coupled	B-Application
forecast	I-Application
system	I-Application
(	O
both	O
names	O
abbreviated	O
CFS	O
)	O
is	O
a	O
medium	O
to	O
long	O
range	O
numerical	B-General_Concept
weather	I-General_Concept
prediction	I-General_Concept
and	O
a	O
climate	B-Application
model	I-Application
run	O
by	O
the	O
National	O
Centers	O
for	O
Environmental	O
Prediction	O
(	O
NCEP	O
)	O
to	O
bridge	O
weather	O
and	O
climate	O
timescales	O
.	O
</s>
<s>
Version	O
2	O
became	O
operational	O
as	O
CFSv2	B-Application
in	O
2011	O
.	O
</s>
<s>
CFSv2	B-Application
is	O
run	O
once	O
daily	O
at	O
NCEP	O
,	O
at	O
multiple	O
time	O
scales	O
.	O
</s>
<s>
The	O
shorter	O
scale	O
has	O
some	O
overlap	O
with	O
the	O
Global	O
Forecast	O
System	O
,	O
NAVGEM	B-Application
and	O
FIM	B-Application
models	O
(	O
among	O
several	O
other	O
medium-range	O
models	O
)	O
that	O
the	O
US	O
government	O
runs	O
for	O
operational	O
forecast	O
purposes	O
.	O
</s>
<s>
"	O
Coupled	O
"	O
refers	O
to	O
the	O
fact	O
that	O
the	O
model	O
couples	O
atmospheric	B-Application
to	O
oceanic	O
modeling	O
.	O
</s>
<s>
Its	O
forecasts	O
are	O
derived	O
from	O
a	O
16-member	O
ensemble	B-Application
,	O
with	O
each	O
member	O
initialized	O
on	O
a	O
lead	O
of	O
several	O
days	O
of	O
conditions	O
.	O
</s>
<s>
The	O
CFSv2	B-Application
offers	O
output	O
that	O
can	O
be	O
masked	O
to	O
suppress	O
forecasts	O
made	O
with	O
insufficient	O
skill	O
.	O
</s>
