Land,
Год журнала:
2025,
Номер
14(1), С. 160 - 160
Опубликована: Янв. 14, 2025
Extreme
climate
events
have
become
more
frequent
under
global
warming,
significantly
affecting
vegetation
phenology
and
carbon
cycles
in
Central
Asia.
However,
the
mediating
effects
of
intensity
compound
drought
heat
(CDHEs)
moisture
(CMHEs)
on
grassland
their
trends
relative
contributions
to
over
time
remained
unclear.
Based
calculation
results
(CEs),
this
study
used
trend
analysis,
partial
least
squares
regression
structural
equation
modeling
(PLS-SEM),
ridge
analysis
investigate
effect
temporal
contribution
CEs
Asia,
magnitude
sensitivity
CEs.
This
revealed
that
start
season
(SOS)
was
advanced
by
0.4
d·a−1,
end
(EOS)
delayed
0.5
length
(LOS)
extended
0.8
d·a−1
1982–2022.
The
duration
CDHEs
(0−37
days)
greater
than
CMHEs
(0−9
direct
were
generally
negative,
except
for
positive
LOS.
indirect
temperature
precipitation
through
phenology.
consistently
CMHEs,
both
curves
showed
a
significant
upward
trend.
higher
its
at
0.79
(SOS),
1.18
(EOS),
0.72
(LOS).
Our
emphasize
Under
influence
LOS
will
further
lengthen
future.
Geophysical Research Letters,
Год журнала:
2023,
Номер
50(22)
Опубликована: Ноя. 14, 2023
Abstract
The
Yangtze
River
Basin
experienced
one
of
the
worst
flash
droughts
on
record
during
2022
summer,
but
relative
contributions
precipitation
deficit
and
high
temperature
to
drought
onset
speed
intensity
are
difficult
separate
due
compounding
feature
hot
dry
extremes
caused
by
persistent
high‐pressure
anomalies.
Based
high‐resolution
land
surface
model
ensemble
simulations
with
specified
meteorological
conditions
that
reproduce
and/or
anomalies
2022,
we
find
is
dominant
factor
for
triggering
drought.
Meanwhile,
further
accelerates
decrease
soil
moisture
intensifies
condition
increasing
evapotranspiration,
which
contributes
37%
±
14%
(31%
15%)
36%
11%
(30%
over
upper
reach
(middle
lower
reaches).
Our
study
reveals
nontrivial
role
in
intensifying
drought,
might
be
more
significant
warmer
future.
Journal of Geophysical Research Atmospheres,
Год журнала:
2024,
Номер
129(4)
Опубликована: Фев. 8, 2024
Abstract
The
unprecedented
2022
Yangtze
River
Basin
(YRB)
heatwave
is
a
threat
to
human
society
and
natural
ecology,
so
the
understanding
of
its
underlying
drivers
critical
regional
climate
adaptation
resilience.
Here
we
conducted
multi‐method
attribution
analysis
on
contribution
atmospheric
circulation
change
anthropogenic
impacts
occurrence
probability
intensity
this
extreme
heatwave.
Based
nonstationary
statistical
analysis,
YRB
1‐in‐900‐year
event
1‐in‐110‐year
with
without
considering
in
fitting,
respectively.
large‐scale
meteorological
condition
shows
that
featured
an
anomalous
high‐pressure
system
favors
hot
dry
column,
overlaid
by
subsidence
clear
skies
which
leads
warming
greater
solar
heating.
ensemble
constructed
analogue
analyses
show
anomaly
fails
explain
observed
SAT
anomalies
fully.
Specifically,
46%
(0.132
±
0.027°C
decade
−1
)
trend
during
1979–2022
(0.290
0.048°C
caused
associated
thermodynamic
feedback,
while
remaining
54%
(0.157
0.038°C
changes
circulation.
Our
findings
patterns
contributions
could
provide
valuable
information
for
mitigation
strategies
context
climate.
Environmental Research Letters,
Год журнала:
2024,
Номер
19(10), С. 104019 - 104019
Опубликована: Авг. 30, 2024
Abstract
Subtropical
East
Asia
(STEA)
experienced
a
historic
flood
in
the
summer
of
2020,
and
drought
heatwaves
2022.
Previous
studies
emphasized
role
western
Pacific
subtropical
high
(WPSH),
but
there
is
paradox
that
contrasting
climate
extremes
over
STEA
2020
2022
are
both
associated
with
anomalously
strong
WPSH.
Given
local
vertical
motion
has
dominant
control
on
precipitation
variability,
here
we
investigate
mechanism
for
variability
STEA.
In
most
extratropical
regions
Northern
Hemisphere,
ascent
(descent)
aligns
southerly
(northerly)
flow
troposphere
due
to
northward
tilting
isentropic
surfaces.
However,
surfaces
tilt
eastwards
existence
warm
center
Tibetan
Plateau
(TP).
Thus,
insensitive
strength
related
intensity
WPSH
sensitive
westerly
meridional
shift
jet.
The
notably
increased
water
vapor
transport
into
had
little
impact
atmospheric
motion.
Asian
jet
displaced
southwards
(northwards)
(2022),
leading
anomalous
(easterly)
flows
mid-upper
from
TP
jet’s
southern
flank,
prompting
contributed
(drought)
conditions
(2022).
Our
results
highlight
essential
zonal
generating
surface
because
its
