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the O
nature O
of O
forcing O
from O
below O
on O
the O
coupled O
thermosphere B-climate-nature
/ O
ionosphere B-climate-nature
system O
, O
this O
study O
uses O
the O
Specified B-climate-models
Dynamics I-climate-models
Whole I-climate-models
Atmosphere I-climate-models
Community I-climate-models
Climate I-climate-models
Model I-climate-models
eXtended I-climate-models
( O
SD B-climate-models
- I-climate-models
WACCM I-climate-models
- I-climate-models
X I-climate-models
) O
to O
quantify O
how O
the O
meteorology O
of O
the O
underlying O
atmosphere B-climate-nature
impacts O
the O
thermosphere B-climate-nature
. O
For O
this O
study O
, O
global O
meteorological O
specifications O
are O
produced O
by O
a O
high O
- O
altitude O
version O
of O
the O
Navy B-climate-models
Global I-climate-models
Environmental I-climate-models
Model I-climate-models
( O
NAVGEM B-climate-models
- I-climate-models
HA I-climate-models
) O
, O
which O
assimilates O
standard O
meteorological O
observations O
from O
the O
surface O
through O
the O
lower B-climate-nature
atmosphere I-climate-nature
, O
and O
satellite O
- O
based O
observations O
of O
temperature B-climate-properties
and O
constituents O
in O
middle B-climate-nature
atmosphere I-climate-nature
( O