Ecological Indicators,
Год журнала:
2023,
Номер
157, С. 111248 - 111248
Опубликована: Ноя. 18, 2023
Heatwaves
are
increasingly
frequent
and
severe,
prompting
international
research
concerns.
This
study
utilized
the
Visibility
Graph
to
construct
complex
networks
(CNs)
of
heatwaves
in
China.
From
a
CN
perspective,
we
analyzed
spatial
temporal
variability
hazard
patterns
heatwaves,
with
focus
on
their
reliability
advantages.
Our
findings
indicate
that
China
have
exhibited
consistent
overall
increasing
trend
since
1961,
more
significant
rise
observed
past
30
years.
Notably,
there
substantial
variations
changes
severity
experienced
different
regions
decades,
southern
experiencing
higher
hazards
compared
central
where
they
relatively
lower.
The
utilization
CNs
has
demonstrated
remarkable
advantages
anomaly
detection,
change
phase
delineation,
analysis
connections
between
meteorological
stations,
selection
representative
values.
And,
enable
incorporation
both
heatwave
zoning.
results
this
provide
new
methods
perspectives
for
researching
climate
extremes,
establish
solid
foundation
comprehensive
accurate
prevention
Applied Sciences,
Год журнала:
2024,
Номер
14(10), С. 3969 - 3969
Опубликована: Май 7, 2024
In
response
to
the
urgent
global
threat
posed
by
human-induced
extreme
climate
hazards,
heatwaves
are
still
systematically
under-reported
and
under-researched
in
Thailand.
This
region
is
confronting
a
significant
rise
heat-related
mortality,
which
has
resulted
hundreds
of
deaths,
underscoring
pressing
issue
that
needs
be
addressed.
research
article
one
first
present
solution
for
assessing
heatwave
dynamics,
using
machine
learning
(ML)
algorithms
geospatial
technologies
this
country.
It
analyzes
metrics
like
number
(HWN),
frequency
(HWF),
duration
(HWD),
magnitude
(HWM),
amplitude
(HWA),
combining
satellite-derived
land
surface
temperature
(LST)
data
with
ground-based
air
(Tair)
observations
from
1981
2019.
The
result
reveals
marked
increases
both
intensity
daytime
peri-urban
areas,
most
pronounced
changes
being
0.45-day/year
HWN,
2.00-day/year
HWF,
0.27-day/year
HWD.
trend
notably
less
urban
areas.
Conversely,
rural
regions
experiencing
escalation
nighttime
heatwaves,
0.39
days/year
1.44
0.14
Correlation
analysis
(p<0.05)
spatial
heterogeneity
robust
correlations
between
Tair
LST
(HWN,
HWD,
r>0.90)
(HWM,
HWA,
r>0.65)
regions.
study
emphasizes
importance
considering
microclimatic
variations
analysis,
offering
insights
targeted
intervention
strategies.
demonstrates
how
enhancing
remote
sensing
ML
can
facilitate
spatial–temporal
across
diverse
environments.
approach
identifies
critical
risk
areas
Thailand,
guiding
resilience
efforts
serving
as
model
managing
similar
microclimates,
extending
applicability
study.
Overall,
provides
policymakers
stakeholders
potent
tools
action
effective
management.
Furthermore,
contributes
mitigating
impacts
events,
promoting
resilience,
fostering
environmental
sustainability.
Journal of Geophysical Research Atmospheres,
Год журнала:
2024,
Номер
129(21)
Опубликована: Ноя. 2, 2024
Abstract
The
spring‐high
temperature
events
(SHTE)
over
northeast
China
(NEC)
and
the
related
local
atmospheric
factors
including
cloud
cover,
radiation
flux,
soil
moisture
exhibited
an
increased
interannual
variability
after
1992/93.
Correlation
analyses
reveal
that
both
North
Atlantic
quadrupole
sea
surface
anomalies
(NAQSSTA)
spring
Siberian
snow
depth
(SSSD)
had
a
stronger
linkage
with
SHTE
since
early
1990s.
Additionally,
of
SSSD
also
showed
interdecadal
increase,
which
is
key
factor
in
changes
SHTE.
Further
NAQSSTA
could
excite
Rossby
wave
via
increasing
low‐level
baroclinicity
during
1993–2017.
One
branch
trains
propagated
eastward
other
northeastward
through
high
latitudes,
eventually
reached
NEC
together
resulted
anomalous
anticyclonic
circulation
sinking
motion.
latter
contribute
to
low
geopotential
height
cyclonic
further
favored
increase
there.
Subsequently,
positive
facilitate
more
occurrences
by
exacerbating
meridional
thickness
gradient
between
polar
region
mid‐latitudes
then
limiting
Arctic
cold
air
invade
into
south.
Meanwhile,
polar‐Eurasian
pattern
(POL)
associated
higher
guide
train
originating
from
propagate
northeastward,
consistent
SHTE‐related
path
Model
results
reproduce
physical
processes
linking
Sustainability,
Год журнала:
2023,
Номер
15(18), С. 13512 - 13512
Опубликована: Сен. 9, 2023
The
Yellow
River
Basin
is
an
important
ecological
barrier
and
economic
development
area
in
China,
but
it
faces
some
problems
such
as
the
degradation
of
its
quality
a
lagging
level.
Promoting
high-quality
only
way
for
China’s
construction
to
enter
into
development,
objective
evaluation
study
premise
effectively
improving
this
quality.
Based
on
panel
data
during
period
2010–2022,
framework
drivers,
pressures,
state,
impact,
response
model
was
used
build
index
system.
each
province
calculated
using
entropy
TOPSIS
model.
Further,
descriptive
statistics
method
standard
deviation
ellipse
were
applied
analyze
spatio-temporal
characteristics
area,
geographical
detector
weighted
regression
employed
reveal
driving
factors
Basin.
results
showed
that
(1)
steadily
improved
over
period,
with
average
annual
growth
rate
3.024%.
(2)
high-value
level
distributed
from
northwest
southeast,
high
values
subsystem
tending
be
spatially
stable,
well
spatial
differences
subsystems
increasing.
(3)
proportion
tertiary
industry,
per
capita
disposable
income,
rural–urban
income
ratio,
GDP,
highway
mileage,
population
main
affecting
evolution
Basin,
q
0.867,
0.938,
0.852,
0.781,
0.842,
0.763,
respectively.
(4)
Except
negative
effect
other
five
all
had
positive
effects
level,
0.044,
0.068,
0.227,
0.064,
0.215,
Ecological Indicators,
Год журнала:
2023,
Номер
157, С. 111248 - 111248
Опубликована: Ноя. 18, 2023
Heatwaves
are
increasingly
frequent
and
severe,
prompting
international
research
concerns.
This
study
utilized
the
Visibility
Graph
to
construct
complex
networks
(CNs)
of
heatwaves
in
China.
From
a
CN
perspective,
we
analyzed
spatial
temporal
variability
hazard
patterns
heatwaves,
with
focus
on
their
reliability
advantages.
Our
findings
indicate
that
China
have
exhibited
consistent
overall
increasing
trend
since
1961,
more
significant
rise
observed
past
30
years.
Notably,
there
substantial
variations
changes
severity
experienced
different
regions
decades,
southern
experiencing
higher
hazards
compared
central
where
they
relatively
lower.
The
utilization
CNs
has
demonstrated
remarkable
advantages
anomaly
detection,
change
phase
delineation,
analysis
connections
between
meteorological
stations,
selection
representative
values.
And,
enable
incorporation
both
heatwave
zoning.
results
this
provide
new
methods
perspectives
for
researching
climate
extremes,
establish
solid
foundation
comprehensive
accurate
prevention
