<s>
S6MF	O
includes	O
synthetic-aperture	B-Application
radar	I-Application
altimetry	O
techniques	O
to	O
improve	O
ocean	O
topography	O
measurements	O
,	O
in	O
addition	O
to	O
rivers	O
and	O
lakes	O
.	O
</s>
<s>
Formerly	O
called	O
Sentinel-6A	O
and	O
Jason-CS	B-Algorithm
A	O
(	O
Jason	O
Continuity	O
of	O
Service-A	O
)	O
,	O
it	O
was	O
renamed	O
in	O
honor	O
of	O
the	O
former	O
director	O
of	O
NASA	O
Earth	O
Science	O
Division	O
,	O
Michael	O
Freilich	O
,	O
who	O
was	O
instrumental	O
in	O
advancing	O
space-based	O
ocean	O
measurements	O
.	O
</s>
<s>
The	O
Sentinel-6	O
was	O
developed	O
by	O
European	O
Space	O
Agency	O
(	O
ESA	O
)	O
in	O
the	O
context	O
of	O
the	O
European	O
Copernicus	B-General_Concept
Programme	I-General_Concept
led	O
by	O
the	O
European	O
Commission	O
,	O
the	O
European	O
Organisation	O
for	O
the	O
Exploitation	O
of	O
Meteorological	O
Satellites	O
(	O
EUMETSAT	O
)	O
,	O
NASA	O
,	O
and	O
the	O
National	O
Oceanic	O
and	O
Atmospheric	O
Administration	O
(	O
NOAA	O
)	O
,	O
with	O
funding	O
support	O
from	O
the	O
European	O
Commission	O
and	O
technical	O
support	O
from	O
France	O
's	O
National	O
Centre	O
for	O
Space	O
Studies	O
(	O
CNES	O
,	O
Centre	O
national	O
d'études	O
spatiales	O
)	O
.	O
</s>
<s>
The	O
Sentinel-6	O
mission	O
is	O
part	O
of	O
the	O
Copernicus	B-General_Concept
programme	I-General_Concept
initiative	O
,	O
the	O
main	O
objective	O
of	O
the	O
Sentinel-6	O
mission	O
is	O
to	O
measure	O
sea	O
surface	O
topography	O
with	O
high	O
accuracy	O
and	O
reliability	O
to	O
support	O
ocean	O
forecasting	O
systems	O
,	O
environmental	O
monitoring	O
and	O
climate	O
monitoring	O
.	O
</s>
<s>
The	O
mission	O
definition	O
is	O
driven	O
by	O
the	O
need	O
for	O
continuity	O
in	O
provision	O
of	O
TOPEX/Poseidon	O
mission	O
and	O
Jason	O
satellite	O
series	O
(	O
Jason-1	B-Algorithm
,	O
OSTM/Jason	B-Algorithm
-2	I-Algorithm
,	O
and	O
Jason-3	O
)	O
with	O
improvements	O
in	O
instrument	O
performance	O
and	O
coverage	O
.	O
</s>
