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> Fig. 10.1. Photo of the weather sensor suite at the Iowa DOT maintenance garage in Ames, Iowa
SELECTED CASE STUDIES
Case Studies - MDSS_Tech_Perf_Report_29120025
MDSS_Tech_Perf_Report_2912
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Fig.
10.1.
Photo
of the
weather
sensor
suite at the
Iowa
DOT
maintenance
garage
in
Ames,
Iowa.
For
the
case
studies
presented
here a
technique
is
used
to
derive
the
actual
snowfall
from
the
light
emitting
diode
weather
identifier
(LEDWI)
sensor
located
at
the
METAR
site.
The
LEDWI
sensor
reports
once per
minute
during
times
of
falling
precipitation
.
In
order
to
convert
the
liquid
precipitation
measurements to
snowfall
accumulation
a
snow
to
liquid
ratio
must
first
be
identified.
Time
periods
with
relatively
light
winds
were
used
because
they
had
fairly
good
liquid
precipitation
measurements
from
the
NWS
tipping
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