Deleted Journal,
Год журнала:
2024,
Номер
8(1), С. 29 - 29
Опубликована: Март 30, 2024
Idling
engines
when
automobiles
are
not
moving
leads
to
inefficient
fuel
consumption
and
may
harm
human
health
the
environment.
No
scientific
reports
have
evaluated
effects
of
idling
diesel
on
public
wastage
in
Malaysia;
thus,
a
study
is
required.
This
work
aims
characteristics
emissions,
heat
dissipation,
due
operations
diesel-engine
vehicles
under
idle
concerning
The
was
conducted
by
measuring
emissions
during
conditions
using
various
instruments,
namely
gas
analyser,
particulate
matter
monitor,
temperature
sensor,
meter
at
selected
locations
where
heavy
were
commonly
found
left
with
engines.
It
that
idling-vehicle
vicinity
pedestrians
far
higher
than
limits
set
Malaysia
Ambient
Air
Quality
Standard
2020,
implying
an
unhealthy
practice.
levels
also
15
200
times
more
standard
limit.
silent
hazard
would
be
detrimental
public,
leading
problems.
Furthermore,
it
lead
hefty
medical
bills
for
government.
emission
high,
discomfort
issues
passersby.
From
economic
point
view,
waste
from
exorbitantly
thus
suggesting
authorities
should
regulate
practice
Keywords:
engine,
wastage,
emission,
engines,
pollutant
Environmental Research Letters,
Год журнала:
2023,
Номер
18(10), С. 104038 - 104038
Опубликована: Сен. 22, 2023
Abstract
Accelerated
urbanization
and
frequent
heatwave
events
pose
significant
threats
to
human
health.
Analyses
of
the
differences
in
air
land
surface
temperature
(LST)
under
extreme
climates
can
aid
understanding
human-nature
ecosystem
coupling
required
adaptations
climate
change.
In
this
study,
we
quantified
urban
rural
temperatures
China
(CHW)
non-heatwave
periods
(NHW)
conditions
influence
meteorological
factors
on
these
differences.
Based
impervious
data,
2421
stations
were
dynamically
classified
from
2008
2017.
Heatwaves
identified
using
relative
thresholds,
explored
data
MODIS
LST
data.
For
LST,
urban–rural
difference
(U-R
Tempdiff
)
was
highest
during
day,
whereas
peaks
occurred
at
night,
both
NHW
CHW
conditions.
During
CHWs,
daytime
U-R
greater
for
than
temperature,
reaching
4.24
±
3.38
°C.
At
slightly
lower
(1.04
1.41
°C).
The
proportion
contributed
by
significantly
higher
nights
nights,
remained
relatively
stable
daytime.
Spatially,
north
decreased
with
latitude,
south
lower.
Under
had
a
stronger
effect
smaller
(0.01
°C
yr
−1
day
larger
(0.03
night.
contribution
that
particularly
(16.34%).
effects
wind
speed
precipitation
average
those
CHW,
accounting
16.13%,
being
more
significant.
These
results
show
comprehensive
perspective
is
needed
understand
risks
associated
rise
risk
formulate
effective
mitigation
measures
will
they
improve
thermal
comfort
Environment International,
Год журнала:
2023,
Номер
180, С. 108196 - 108196
Опубликована: Сен. 9, 2023
Significant
urbanization
resulted
in
increasing
surface
urban
heat
island
(SUHI)
that
caused
negative
impacts
on
ecological
environment,
and
residential
comfort.
Accurately
monitoring
the
spatiotemporal
variations
understanding
controls
of
SUHI
were
essential
to
propose
effective
mitigation
measurements.
However,
grades
across
global
cities
remained
unknown,
which
cloud
greatly
support
for
mitigations.
Additionally,
quantitative
evaluating
factor
weights
different
indicators
worldwide
further
investigations.
Therefore,
this
paper
proposed
grading
based
agglomerative
hierarchical
clustering,
quantified
an
interoperable
machine
learning
named
TabNet.
There
three
major
findings.
(1)
Global
grouped
into
five
grades,
including
SUCI
(surface
cool
island),
insignificant,
low-value,
medium-value,
high-value
indicating
significant
differences
among
grades.
showed
climate-based
variations,
wherein
arid
climate
was
dominated
by
grade
at
daytime
but
nighttime.
(2)
Vegetation
difference
important
SUHII
accounting
27%.
Daytime
frequency
controlled
vegetation
difference,
temperature,
evaporation
nighttime
light,
78%.
The
factors
albedo
45%.
(3)
Related
contributed
differently
various
weight
△EVI
gradually
increased
with
while
it
maximum
duration
decreased
low-value
affected
background
climate,
medium-value
strongly
impacted
anthropogenic
flux.
diurnal
contrast
coupling
effects
wave
discussed.
This
aimed
provide
information
proposal.
