
82-1
82.1 Introduction
Meteorological measurements are measurements of the physical properties of the atmosphere. ese
measurements are made at all elevations in the troposphere and the stratosphere. For measurements
ma
de
at el
evations
ab
ove
gr
ound
or to
wer
le
vel,
in
struments
ca
n
be ca
rried
al
o
by ba
lloons,
ro
ck-
ets,
or ai
rplanes
. Gr
ound
ra
dar
is us
ed
to de
tect
th
e
pr
esence
of wa
ter
in th
e
fo
rm
of dr
oplets
or
ic
e
cr
ystals
at al
l
el
evations
an
d
th
e
wi
nds
as
sociated
wi
th
th
em
. Li
dar
(o
ptical
ra
dar)
of se
lected
wa
velengths
is us
ed
to de
tect
th
e
pr
esence
an
d
am
ount
of ae
rosols
an
d
ot
her
co
nstituents
of th
e
at
mosphere
an
d
to de
termine
cl
oud