<s>
GRIB	B-Application
(	O
GRIdded	O
Binary	O
or	O
General	O
Regularly-distributed	O
Information	O
in	O
Binary	O
form	O
)	O
is	O
a	O
concise	O
data	O
format	O
commonly	O
used	O
in	O
meteorology	O
to	O
store	O
historical	O
and	O
forecast	O
weather	O
data	O
.	O
</s>
<s>
It	O
is	O
standardized	O
by	O
the	O
World	O
Meteorological	O
Organization	O
's	O
Commission	O
for	O
Basic	O
Systems	O
,	O
known	O
under	O
number	O
GRIB	B-Application
FM	O
92-IX	O
,	O
described	O
in	O
WMO	O
Manual	O
on	O
Codes	O
No.306	O
.	O
</s>
<s>
Currently	O
there	O
are	O
three	O
versions	O
of	O
GRIB	B-Application
.	O
</s>
<s>
The	O
first	O
edition	O
(	O
current	O
sub-version	O
is	O
2	O
)	O
is	O
used	O
operationally	O
worldwide	O
by	O
most	O
meteorological	O
centers	O
,	O
for	O
Numerical	B-General_Concept
Weather	I-General_Concept
Prediction	I-General_Concept
output	O
(	O
NWP	B-General_Concept
)	O
.	O
</s>
<s>
A	O
newer	O
generation	O
has	O
been	O
introduced	O
,	O
known	O
as	O
GRIB	B-Application
second	O
edition	O
,	O
and	O
data	O
is	O
slowly	O
changing	O
over	O
to	O
this	O
format	O
.	O
</s>
<s>
Some	O
of	O
the	O
second-generation	O
GRIB	B-Application
are	O
used	O
for	O
derived	O
product	O
distributed	O
in	O
Eumetcast	O
of	O
Meteosat	O
Second	O
Generation	O
.	O
</s>
<s>
GRIB	B-Application
files	O
are	O
a	O
collection	O
of	O
self-contained	O
records	O
of	O
2D	O
data	O
,	O
and	O
the	O
individual	O
records	O
stand	O
alone	O
as	O
meaningful	O
data	O
,	O
with	O
no	O
references	O
to	O
other	O
records	O
or	O
to	O
an	O
overall	O
schema	O
.	O
</s>
<s>
So	O
collections	O
of	O
GRIB	B-Application
records	O
can	O
be	O
appended	O
to	O
each	O
other	O
or	O
the	O
records	O
separated	O
.	O
</s>
<s>
Each	O
GRIB	B-Application
record	O
has	O
two	O
components	O
-	O
the	O
part	O
that	O
describes	O
the	O
record	O
(	O
the	O
header	O
)	O
,	O
and	O
the	O
actual	O
binary	O
data	O
itself	O
.	O
</s>
<s>
The	O
data	O
in	O
GRIB-1	O
are	O
typically	O
converted	O
to	O
integers	O
using	O
scale	O
and	O
offset	O
,	O
and	O
then	O
bit-packed	O
.	O
</s>
<s>
GRIB-2	O
also	O
has	O
the	O
possibility	O
of	O
compression	O
.	O
</s>
<s>
GRIB	B-Application
superseded	O
the	O
Aeronautical	O
Data	O
Format	O
(	O
ADF	O
)	O
.	O
</s>
<s>
The	O
World	O
Meteorological	O
Organization	O
(	O
WMO	O
)	O
Commission	O
for	O
Basic	O
Systems	O
(	O
CBS	O
)	O
met	O
in	O
1985	O
to	O
create	O
the	O
GRIB	B-Application
(	O
GRIdded	O
Binary	O
)	O
format	O
.	O
</s>
<s>
The	O
Working	O
Group	O
on	O
Data	O
Management	O
(	O
WGDM	O
)	O
in	O
February	O
1994	O
,	O
after	O
major	O
changes	O
,	O
approved	O
revision	O
1	O
of	O
the	O
GRIB	B-Application
format	O
.	O
</s>
<s>
GRIB	B-Application
Edition	O
2	O
format	O
was	O
approved	O
in	O
2003	O
at	O
Geneva	O
.	O
</s>
<s>
The	O
PDS	O
describes	O
who	O
created	O
the	O
data	O
(	O
the	O
research	O
/	O
operation	O
center	O
)	O
,	O
the	O
involved	O
numerical	O
model	O
/	O
process	O
(	O
can	O
be	O
NWP	B-General_Concept
or	O
GCM	B-Application
)	O
,	O
the	O
data	O
that	O
is	O
actually	O
stored	O
(	O
such	O
as	O
wind	O
,	O
temperature	O
,	O
ozone	O
concentration	O
etc	O
.	O
</s>
<s>
This	O
information	O
includes	O
spectral	O
(	O
harmonics	O
of	O
divergence	B-Application
and	O
vorticity	O
)	O
vs	O
gridded	O
data	O
(	O
Gaussian	O
,	O
X-Y	O
grid	O
)	O
,	O
horizontal	O
resolution	O
,	O
and	O
the	O
location	O
of	O
the	O
origin	O
.	O
</s>
<s>
A	O
number	O
of	O
application	O
software	O
packages	O
have	O
been	O
written	O
which	O
make	O
use	O
of	O
GRIB	B-Application
files	O
.	O
</s>
<s>
These	O
range	O
from	O
command	B-Application
line	I-Application
utilities	O
to	O
graphical	O
visualisation	B-Application
packages	O
.	O
</s>
<s>
Grib	B-Application
display	O
and	O
download	O
from	O
many	O
sources	O
is	O
free	O
.	O
</s>
<s>
cfGrib	O
is	O
a	O
State-Of-the-Art	O
grib	B-Application
parsing	O
tool	O
for	O
python	B-Language
based	O
on	O
ecCodes	O
from	O
ECMWF	O
.	O
</s>
<s>
-	O
Jgrib	O
is	O
a	O
free	O
library	O
for	O
reading	O
GRIB	B-Application
files	O
in	O
Java	O
.	O
</s>
<s>
-	O
Meteosatlib	O
is	O
a	O
free	O
software	O
C++	O
library	O
and	O
set	O
of	O
tools	O
to	O
convert	O
satellite	O
images	O
between	O
various	O
formats	O
;	O
it	O
can	O
read	O
and	O
write	O
GRIB	B-Application
data	O
,	O
and	O
its	O
GRIB	B-Application
encoding/decoding	O
library	O
can	O
be	O
used	O
standalone	O
.	O
</s>
<s>
The	O
NCAR	O
Command	O
Language	O
can	O
be	O
used	O
to	O
read	O
,	O
analyze	O
and	O
visualize	O
GRIB	B-Application
data	O
,	O
as	O
well	O
convert	O
it	O
to	O
other	O
gridded	O
data	O
formats	O
.	O
</s>
<s>
is	O
a	O
Python	B-Language
programming	I-Language
language	I-Language
module	O
that	O
allows	O
read	O
and/or	O
write	O
access	O
to	O
a	O
variety	O
of	O
data	O
formats	O
using	O
an	O
interface	O
modelled	O
on	O
netCDF	B-Application
.	O
</s>
<s>
is	O
an	O
API	B-General_Concept
developed	O
at	O
ECMWF	O
to	O
decode	O
and	O
encode	O
GRIB	B-Application
edition	O
1	O
and	O
2	O
data	O
.	O
</s>
<s>
Note	O
:	O
this	O
package	O
has	O
now	O
been	O
replaced	O
by	O
which	O
is	O
a	O
superset	O
of	O
GRIB	B-Application
API	B-General_Concept
.	O
</s>
<s>
ECMWF	O
also	O
offers	O
the	O
plotting	O
package	O
and	O
the	O
Metview	B-Application
workstation/batch	O
system	O
to	O
handle/visualise	O
GRIB	B-Application
files	O
.	O
</s>
<s>
-	O
QGIS	O
is	O
a	O
graphical	O
open	O
source	O
software	O
that	O
can	O
visualise	O
GRIB	B-Application
files	O
.	O
</s>
<s>
–	O
Ugrib	O
is	O
a	O
no	O
cost	O
graphical	O
GRIB	B-Application
viewer	O
designed	O
for	O
reading	O
GRIB1	O
files	O
.	O
</s>
<s>
The	O
website	O
GRIB.US	O
also	O
aims	O
to	O
provide	O
education	O
on	O
the	O
prudent	O
and	O
safe	O
use	O
of	O
GRIB	B-Application
data	O
for	O
forecasting	O
weather	O
.	O
</s>
<s>
-	O
SmartMet	O
is	O
a	O
Windows	O
tool	O
that	O
reads	O
,	O
writes	O
and	O
visualises	O
GRIB	B-Application
data	O
.	O
</s>
<s>
Convsh	O
is	O
the	O
command-line	B-Application
equivalent	O
.	O
</s>
<s>
a	O
graphical	O
software	O
for	O
Linux	O
,	O
Mac	B-Application
OS	I-Application
X	O
and	O
Windows	O
(	O
GPL3	O
,	O
Qt	O
)	O
to	O
download	O
and	O
display	O
GRIB1	O
and	O
GRIB2	O
(	O
since	O
v8.0	O
)	O
files	O
.	O
</s>
<s>
A	O
multi	O
platform	O
app	O
designed	O
for	O
boats	O
heading	O
offshore	O
with	O
a	O
need	O
to	O
download	O
forecast	O
GRIB	B-Application
data	O
on	O
a	O
Satellite	O
or	O
SSB	O
connection	O
.	O
</s>
<s>
an	O
app	O
available	O
on	O
macOS	B-Application
,	O
iOS	B-Application
and	O
iPadOS	B-Operating_System
,	O
designed	O
for	O
sailors	O
and	O
other	O
weather	O
enthusiasts	O
.	O
</s>
<s>
LuckGrib	O
provides	O
easy	O
access	O
to	O
many	O
GRIB	B-Application
weather	B-General_Concept
models	I-General_Concept
.	O
</s>
<s>
A	O
python	B-Language
language	I-Language
extension	O
module	O
which	O
allows	O
one	O
to	O
read	O
and	O
write	O
GRIB1	O
and	O
GRIB2	O
formats	O
.	O
</s>
<s>
A	O
navigation	O
application	O
that	O
includes	O
a	O
GRIB	B-Application
viewer	O
,	O
supporting	O
both	O
GRIB1	O
and	O
GRIB2	O
.	O
</s>
<s>
is	O
a	O
meteorologically	O
oriented	O
,	O
platform-independent	O
application	O
for	O
visualization	B-Application
and	O
analysis	O
of	O
GRIB1	O
,	O
GRIB2	O
and	O
NetCDF	B-Application
files	O
.	O
</s>
<s>
A	O
marine	O
navigation	O
application	O
for	O
Windows	O
that	O
includes	O
GRIB	B-Application
overlays	O
on	O
the	O
chart	O
.	O
</s>
<s>
an	O
open	O
source	O
Python	B-Language
module	O
for	O
retrieving	O
real-time	O
forecast	O
data	O
from	O
the	O
US	O
National	O
Weather	O
Service	O
.	O
</s>
<s>
GRIB	B-Application
formatted	O
data	O
is	O
cached	O
and	O
parsed	O
to	O
give	O
the	O
developer	O
access	O
to	O
dozens	O
of	O
up-to-date	O
weather	O
forecast	O
variables	O
.	O
</s>
<s>
This	O
application	O
processes	O
GRIB	B-Application
files	O
(	O
about	O
35	O
weather/wave/current	O
models	O
available	O
)	O
to	O
create	O
weather	O
forecasts	O
which	O
can	O
be	O
animated	O
in	O
3D	O
HD	O
.	O
</s>
<s>
Several	O
iOS	B-Application
Apps	O
support	O
the	O
GRIB	B-Application
format	O
,	O
including	O
:	O
</s>
<s>
Several	O
Android	B-Application
Apps	O
support	O
the	O
GRIB	B-Application
format	O
,	O
including	O
:	O
</s>
