Frontiers in Environmental Science,
Journal Year:
2022,
Volume and Issue:
10
Published: Nov. 18, 2022
Cities
are
frontlines
to
tackle
climate
change
challenges
including
the
urban
heat
island
(UHI)
effect.
The
classification
and
mapping
of
local
zones
(LCZs)
can
effectively
consistently
describe
surface
structure
across
regions.
This
study
pays
attention
two
mainstream
methods
in
classifying
LCZs,
namely,
by
using
geographic
information
system
(GIS)
data
such
as
building
footprints
or
remote
sensing
(RS)
satellite
images.
Little
has
been
done
compare
divergence
coherence
abovementioned
modeling
UHI.
Thus,
comparing
pairwise
LCZ
classes
different
form
characteristics
Guangzhou,
this
investigated
how
GIS-
RS-based
approaches
complement
conflict
with
each
other
explaining
variance
UHI
measured
land
temperature
(LST).
First,
while
both
GIS-based
(R2
0.724)
0.729)
explain
risks
LST,
method
slightly
outperforms
GIS
counterpart.
Second,
sizes
LCZs
classified
core
districts
tend
converge
but
diverge
outskirts
disparities
low-rise
forms.
Both
found
that
higher
heights
all
cooler
among
compact
E
is
always
related
highest
average
7,
8,
10
contribute
significantly
islands
from
RS
results.
developed
a
comparable
framework
evident
based
for
city
planners,
architects,
policy
makers
evaluate
which
more
accurately
reveal
relations
between
geometry
cover.
Sustainable Cities and Society,
Journal Year:
2024,
Volume and Issue:
106, P. 105389 - 105389
Published: March 28, 2024
Urban
heat
island
(UHI)
is
a
widely
concerned
urban
climate
which
impacts
billions
of
residents
worldwide.
Nevertheless,
inadequate
rigorous
air
temperature
(Tair)
measurement
has
become
an
obstacle
to
UHI
research
and
mitigation,
especially
in
megacities
like
Beijing.
In
this
study,
we
applied
1-km
hourly
Tair
dataset
interpolated
from
records
521
stations
The
enables
us
analyze
patterns
on
block
scale
the
landscapes
combined
with
local
zones
(LCZ)
scheme.
Our
results
indicate
that:
(1)
its
temporal
variation
each
LCZ
vary
significantly,
are
highly
relevant
their
morphology
thermal-radiative
properties.
(2)
1
2
have
highest
nocturnal
intensities
(UHII).
Discrepancies
among
LCZs
also
cause
various
variations
UHII.
(3)
spatial
pattern
affects
regional
temperature.
Area
ratio
aggregation
extent
1&2
show
significant
positive
correlations
temperature,
while
A&D&G
opposite
regularity.
(4)
Distinct
mitigation
strategies
put
forward
for
subarea
Beijing
endowments
population
structure.
study
provides
insight
into
plausible
advice
Remote Sensing,
Journal Year:
2023,
Volume and Issue:
15(15), P. 3840 - 3840
Published: Aug. 1, 2023
Identifying
the
main
factors
influencing
land
surface
temperature
(LST)
of
each
local
climate
zone
(LCZ)
built
type
is
great
significance
for
controlling
LST.
This
study
investigated
LST
LCZ
in
two
Asian
megacities:
Tokyo
and
Shanghai.
Each
area
both
megacities
was
classified
according
to
scheme.
The
diurnal
LST,
pervious
fraction
(PSF),
albedo
(SA),
average
building
height
(⟨BH⟩),
gross
coverage
ratio
(λp)
were
also
calculated.
Finally,
influence
properties
on
investigated.
results
demonstrated
that
different
types
differed
⟨BH⟩
factor
compact
mid-rise
open
high-rise
Tokyo,
Shanghai;
PSF
other
types.
Moreover,
negatively
correlated
with
Based
above
characteristics
type,
specific
mitigation
strategies
proposed
approach
this
can
contribute
perspectives
urban
planners
policymakers
develop
highly
feasible
reasonable
strategies.
