Abstract.
Global
precipitation
change
in
response
to
climate
is
closely
related
surface
temperature,
the
forcing
agent,
and
atmospheric
dry
energy
budget,
but
regional
more
complex.
In
this
study,
we
use
experiments
from
Precipitation
Driver
Response
Model
Intercomparison
Project
(PDRMIP)
wherein
carbon
dioxide,
sulfate
aerosols,
black
aerosols
are
perturbed
study
global
contrast
with
over
India.
The
warming
dioxide
increases
both
globally
regionally,
whereas
cooling
aerosol
leads
a
reduction
cases.
however,
decrease
increase
of
mechanism
increased
heating
driving
stronger
monsoon
circulation
low-level
winds.
This
intensification
Indian
is,
somewhat
surprisingly,
for
emissions
than
when
limited
those
Asian
region.
Overall,
our
presents
heterogeneity
responses
at
levels
potential
underlying
physical
processes
under
variety
forcings
that
would
be
useful
designing
further
model
higher
spatial
resolution.
Atmosphere,
Год журнала:
2024,
Номер
15(5), С. 535 - 535
Опубликована: Апрель 27, 2024
In
this
paper,
the
global
distribution
of
precipitation
for
2023,
in
terms
totals
and
regional
anomaly
patterns,
is
analyzed
using
information
from
new
Global
Precipitation
Climatology
Project
(GPCP)
V3.2
Monthly
product,
including
how
amounts
patterns
2023
fit
into
longer
record
1983–2023.
The
tropical
pattern
anomalies
dominated
by
effect
El
Nino
which
began
during
Northern
Hemisphere
spring,
after
three
plus
years
La
Nina
conditions.
transition
conditions
through
2022
shows
rapid
change
many
features
positive
to
negative
or
reverse.
Comparison
observed
trend
maps
with
climate
model
results
indicates
similarity
between
observations
forced
SSTs,
while
“free-running”
ensemble
only
a
broad
general
agreement
over
large
regions.
total
about
3%
range
span
data,
prominent
as
features,
showing
small
anomaly.
ITCZ
(Inter-Tropical
Convergence
Zone)
latitude
band,
0–10°
N,
sets
high
mean
rain
rate
steady
upward
decades,
probably
response
related
warming.
Geophysical Research Letters,
Год журнала:
2023,
Номер
50(14)
Опубликована: Июль 20, 2023
Abstract
Ship
present‐weather
reports
from
1950
to
2019
are
used
assess
trends
in
the
reporting
of
precipitation
occurrence
over
global
oceans.
Annual
reported
frequency
shows
statistically
significant
positive
up
∼15%
per
decade
throughout
most
ocean
areas
equatorward
45°.
However,
latitudes
poleward
45°
dominated
by
negative
trends,
some
which
meet
95%
confidence
threshold.
Nine
smaller
regions
were
subjectively
selected
for
further
investigation,
revealing
that
observed
both
and
negative,
often
but
not
always
nearly
linear,
with
amplitude
interannual
fluctuations
usually
being
much
larger
than
expected
random
sampling
error
alone.
The
annual
time
series
reveal
four
comparatively
dry
associated
largest
overall
ranging
8.3%
12.8%
(relative)
decade.
Trends
also
computed
separately
each
season,
remarkable
consistency
across
seasons.
Remote Sensing,
Год журнала:
2023,
Номер
15(23), С. 5460 - 5460
Опубликована: Ноя. 22, 2023
Earth
system
models
(ESMs)
are
important
tools
for
assessing
the
historical
characteristics
and
predicting
future
of
precipitation,
yet
quantitative
understanding
how
these
land–atmospheric
coupling
perform
in
simulating
precipitation
remains
limited.
This
study
conducts
a
comprehensive
evaluation
changes
simulated
by
43
ESMs
CMIP5
32
CMIP6
Arid
Central
Asia
(ALL)
its
two
sub-regions
1959–2005
with
reference
to
Climate
Research
Unit
(CRU)
data,
predicts
2054–2100.
Our
analyses
suggest
following:
(a)
no
single
model
consistently
outperformed
others
all
aspects
variability
(annual
averages,
long-term
trends,
climatological
monthly
patterns);
(b)
simulations
tended
overestimate
average
annual
most
ALL
region,
especially
Xinjiang
Uygur
Autonomous
Region
China
(XJ);
(c)
projected
stronger
increasing
trend
precipitation;
(d)
although
reasonably
captured
there
was
an
underestimation;
(e)
compared
CMIP5,
exhibited
enhanced
capacity
simulate
across
aspects,
discrepancies
persisted
individual
sub-regions;
(f)
it
confirmed
that
multi-model
ensemble
mean
(MME)
provides
more
accurate
representation
three
majority
single-model
simulations.
Lastly,
values
predicted
efficient
region
under
different
scenarios
showed
seasons.
Notably,
strongest
seen
high-emission
scenarios.
Abstract.
Global
precipitation
change
in
response
to
climate
is
closely
related
surface
temperature,
the
forcing
agent,
and
atmospheric
dry
energy
budget,
but
regional
more
complex.
In
this
study,
we
use
experiments
from
Precipitation
Driver
Response
Model
Intercomparison
Project
(PDRMIP)
wherein
carbon
dioxide,
sulfate
aerosols,
black
aerosols
are
perturbed
study
global
contrast
with
over
India.
The
warming
dioxide
increases
both
globally
regionally,
whereas
cooling
aerosol
leads
a
reduction
cases.
however,
decrease
increase
of
mechanism
increased
heating
driving
stronger
monsoon
circulation
low-level
winds.
This
intensification
Indian
is,
somewhat
surprisingly,
for
emissions
than
when
limited
those
Asian
region.
Overall,
our
presents
heterogeneity
responses
at
levels
potential
underlying
physical
processes
under
variety
forcings
that
would
be
useful
designing
further
model
higher
spatial
resolution.
