Climate of the past,
Год журнала:
2024,
Номер
20(7), С. 1687 - 1701
Опубликована: Июль 29, 2024
Abstract.
Atmospheric
circulation
changes,
their
driving
mechanisms,
and
interactions
are
important
topics
in
global
change
research.
Local
changes
the
East
Asian
summer
monsoon
(EASM)
midlatitude
westerlies
will
inevitably
affect
climate
ecology
of
arid
zone
northwestern
China.
Hence,
it
is
to
study
these
regional
changes.
While
previous
studies
this
area
all
single-point
reconstruction
studies,
there
a
lack
research
on
interaction
areas
mechanisms
two
major
circulations.
Dendroclimatology
can
provide
high-resolution,
long-term,
reliable
multi-point
proxies
for
interannual
interdecadal
change.
We
chose
observe
Alxa
Plateau
using
dendrochronological
methods.
assembled
ring-width
records
Qinghai
spruce
(Picea
crassifolia)
mountain
regions
surrounding
Plateau:
Helan
Mountains,
Changling
Mountain,
Dongda
Mountain.
The
results
show
that
radial
growth
was
indeed
affected
by
westerlies.
heterogeneity
precipitation
climatic
wet–dry
different
primarily
influenced
between
atmospheric
systems,
each
with
its
own
dominant
controlling
factors.
In
case
both
systems
play
significant
role
shaping
Mountain
southern
part
mainly
EASM.
Understanding
local
conditions
help
us
predict
International Journal of Climatology,
Год журнала:
2024,
Номер
44(14), С. 5039 - 5056
Опубликована: Окт. 8, 2024
Abstract
Northwest
China
is
much
more
sensitive
to
climate
warming,
and
the
has
varied
rapidly
from
warm
drought
humid
conditions.
In
addition,
due
complex
terrain
of
China,
methods
parameterization
schemes
different
CMIP6
models,
these
models
are
mostly
applied
arid
areas
in
or
Central
Asia,
lacking
data
for
plateau
eastern
Lanzhou,
specifically
filtering
evaluating
applicable
models.
this
paper,
34
used
evaluate
forecast
future
trends
under
SSP126,
SSP245
SSP585
scenarios
short,
medium
long
term.
temperature
precipitation
identified
by
applying
interannual
variability
skill
score
(IVS)
between
CN05.1
datasets
historical
which
suitable
China.
Then,
we
assess
characteristics,
warming
wetting
deviations,
uncertainties
prediction
climatic
change
according
over
The
results
show
that
AWI‐CM‐1‐1‐MR,
BCC‐CSM2‐MR,
FGOALS‐g3,
INM‐CM4‐8,
INM‐CM5‐0
MRI‐ESM2‐0.
multi‐model
ensemble
mean
(MMEM)
better
capability
than
individual
prediction.
Spatiotemporal
shows
overall
trends.
IVS
provides
ability
estimate
model
simulation
performance
both
temporally
spatially.
quite
good
Tarim
Basin
Hexi
Corridor
region,
Altai
Mountains,
Tianshan
Mountains
region.
Cold
wet
deviations
occur
topography
few
stations,
common
reasons.
main
sources
during
century
uncertainty
(before
2090s)
scenario
(after
2090s),
becomes
source
uncertainty.
Journal of Hydrology Regional Studies,
Год журнала:
2024,
Номер
53, С. 101821 - 101821
Опубликована: Май 21, 2024
the
source
region
of
Yellow
River
(SRYB)
Due
to
environmental
changes,
drying
and
wetting
processes
have
become
increasingly
intricate,
it
is
uncertain
whether
phenomenon
in
SRYB
indicates
a
long-term
trend
or
temporary
cyclic
event.
This
study
utilized
monthly
streamflow
precipitation
records
from
1956
2022
calculate
hydrological
meteorological-dryness/wetness,
represented
by
standardized
indices,
respectively.
used
detrended,
wavelet,
cross-wavelet
methods
investigate
dry-wet
variability
identified
atmospheric
circulation
phenomena
driving
dryness/wetness
cyclical
changes
region.
(i)
The
showed
an
overall
fluctuating
trend,
which
intensified
after
2000.
(ii)
There
were
notable
oscillatory
cycles
at
3–5
years,
10–12
approximately
20–25
years
both
meteorological
variability.
(iii)
Transitions
dry
wet
conditions
had
no
significant
link
short-term
(e.g.,
years),
but
linked
decadal
years).
(iv)
Spring
winter
dominated
interannual
(v)
ENSO,
AMO,
PDO
influenced
fluctuations,
while
AO
fluctuations.
that
follows
pattern,
intensification
since
2000
consistent
with
signal.
Hydrological Processes,
Год журнала:
2025,
Номер
39(1)
Опубликована: Янв. 1, 2025
ABSTRACT
The
precipitation–streamflow
relationship
(PSR)
is
one
of
the
most
crucial
aspects
hydrological
process
studies.
Previous
studies
have
analysed
changes
PSR
at
specific
timescales
(e.g.,
annual
or
seasonal),
overlooking
characteristics
across
multiple
and
that
occur
over
time.
This
study
presented
an
integrated
framework
to
address
these
issues
from
three
perspective:
inconsistencies,
response
sensitivity
streamflow
precipitation
oscillation
periods.
monthly
data
representative
reaches
located
in
upper
middle
sections
Yellow
River
Basin
1961
2021.
results
indicate
proposed
effectively
reveals
evolving
patterns
PSR.
evolution
vary
different
time
scales.
Notably,
inconsistencies
variations
are
significant
manifest
differently
various
timescales.
These
differences
were
particularly
pronounced
when
comparing
periods
before
after
2000.
varied
among
periods,
examination
resonant
period
variability
revealed
a
shift
strong‐to‐weak
resonance
within
32–64‐month
period,
followed
by
weak‐to‐strong
transition
128‐month
period.
has
significantly
enhanced
our
understanding
provided
valuable
insights
for
managing
processes
changing
environment.
