<s>
The	O
Visible	B-Algorithm
Infrared	I-Algorithm
Imaging	I-Algorithm
Radiometer	I-Algorithm
Suite	I-Algorithm
(	O
VIIRS	B-Algorithm
)	O
is	O
a	O
sensor	O
designed	O
and	O
manufactured	O
by	O
the	O
Raytheon	O
Company	O
on	O
board	O
the	O
polar-orbiting	O
Suomi	O
National	O
Polar-orbiting	O
Partnership	O
(	O
Suomi	O
NPP	O
)	O
,	O
NOAA-20	O
,	O
and	O
NOAA-21	O
weather	O
satellites	O
.	O
</s>
<s>
VIIRS	B-Algorithm
is	O
one	O
of	O
five	O
key	O
instruments	O
onboard	O
Suomi	O
NPP	O
,	O
launched	O
on	O
October	O
28	O
,	O
2011	O
.	O
</s>
<s>
VIIRS	B-Algorithm
is	O
a	O
whiskbroom	B-Algorithm
scanner	I-Algorithm
radiometer	O
that	O
collects	O
imagery	O
and	O
radiometric	O
measurements	O
of	O
the	O
land	O
,	O
atmosphere	O
,	O
cryosphere	O
,	O
and	O
oceans	O
in	O
the	O
visible	O
and	O
infrared	O
bands	O
of	O
the	O
electromagnetic	O
spectrum	O
.	O
</s>
<s>
VIIRS	B-Algorithm
is	O
capable	O
of	O
generating	O
two	O
data	O
processing	O
streams	O
that	O
result	O
in	O
two	O
different	O
sets	O
of	O
land	O
products	O
,	O
with	O
global	O
coverage	O
every	O
14	O
hours	O
.	O
</s>
<s>
VIIRS	B-Algorithm
's	O
main	O
uses	O
include	O
monitoring	O
and	O
investigating	O
changes	O
and	O
properties	O
in	O
surface	O
vegetation	O
,	O
land	O
cover/use	O
,	O
the	O
hydrologic	O
cycle	O
,	O
and	O
the	O
earth	O
's	O
energy	O
budget	O
over	O
both	O
regional	O
and	O
global	O
scales	O
.	O
</s>
<s>
The	O
combination	O
of	O
MODIS	B-Application
,	O
AVHRR	O
,	O
and	O
VIIRS	B-Algorithm
data	O
sets	O
will	O
allow	O
for	O
the	O
assessment	O
of	O
how	O
climate	O
change	O
has	O
affected	O
the	O
earth	O
's	O
surface	O
over	O
the	O
past	O
~	O
20	O
years	O
.	O
</s>
<s>
VIIRS	B-Algorithm
was	O
launched	O
on	O
board	O
Suomi	O
NPP	O
by	O
a	O
United	O
Launch	O
Alliance	O
Delta	O
II	O
rocket	O
from	O
the	O
Vandenberg	O
Air	O
Force	O
Base	O
at	O
5:48	O
am	O
EDT	O
on	O
28	O
Oct	O
,	O
2011	O
.	O
</s>
<s>
VIIRS	B-Algorithm
was	O
designed	O
to	O
expand	O
upon	O
the	O
data	O
collected	O
by	O
the	O
aging	O
MODIS	B-Application
and	O
AVHRR	O
sensors	O
by	O
collecting	O
radiometric	O
measurements	O
of	O
Earth	O
in	O
the	O
visible	O
and	O
infrared	O
spectra	O
.	O
</s>
<s>
The	O
combination	O
of	O
MODIS	B-Application
,	O
AVHRR	O
,	O
and	O
VIIRS	B-Algorithm
datasets	O
will	O
permit	O
a	O
comprehensive	O
assessment	O
of	O
how	O
climate	O
change	O
has	O
effected	O
the	O
land	O
surface	O
over	O
the	O
past	O
~	O
20	O
years	O
.	O
</s>
<s>
VIIRS	B-Algorithm
has	O
a	O
swath	O
width	O
of	O
3060km	O
at	O
the	O
satellite	O
's	O
average	O
altitude	O
of	O
829km	O
.	O
</s>
<s>
The	O
VIIRS	B-Algorithm
instrument	O
can	O
collect	O
data	O
in	O
22	O
different	O
spectral	O
bands	O
of	O
the	O
electromagnetic	O
spectrum	O
,	O
in	O
the	O
wavelengths	O
between	O
0.412µm	O
and	O
12.01µm	O
.	O
</s>
<s>
The	O
spatial	B-Algorithm
resolution	I-Algorithm
of	O
the	O
sensor	O
depends	O
on	O
the	O
band	O
of	O
the	O
electromagnetic	O
spectrum	O
.	O
</s>
<s>
Out	O
of	O
the	O
22	O
different	O
spectral	O
bands	O
the	O
sensor	O
has	O
,	O
16	O
are	O
moderate	O
resolution	O
bands	O
(	O
M-bands	O
)	O
which	O
have	O
a	O
spatial	B-Algorithm
resolution	I-Algorithm
of	O
750m	O
at	O
the	O
Nadir	O
.	O
</s>
<s>
The	O
other	O
six	O
bands	O
are	O
made	O
up	O
of	O
five	O
imaging	O
resolution	O
bands	O
(	O
I-bands	O
)	O
,	O
which	O
have	O
a	O
spatial	B-Algorithm
resolution	I-Algorithm
of	O
375m	O
at	O
the	O
nadir	O
,	O
and	O
one	O
day/night	O
panchromatic	O
band	O
with	O
a	O
spatial	B-Algorithm
resolution	I-Algorithm
of	O
750m	O
.	O
</s>
<s>
VIIRS	B-Algorithm
imaging	O
optics	O
include	O
a	O
19.1cm	O
Aperture	B-General_Concept
and	O
a	O
114cm	O
Focal	B-Algorithm
length	I-Algorithm
.	O
</s>
