Since
2013,
stringent
clean
air
initiatives
have
significantly
reduced
atmospheric
pollutant
emissions
in
China,
improving
quality
and
altering
the
spatiotemporal
patterns
of
pollution.
Utilizing
fine
particulate
matter
(PM2.5)
its
chemical
composition
data
from
2000
to
2023,
we
observed
a
reduction
disparity
PM2.5
concentrations
between
urban
nonurban
areas.
This
is
linked
stricter
emission
controls
areas
relocation
some
sources
However,
specific
constituents
driving
factors
behind
these
changes
remain
be
fully
elucidated.
By
analyzing
proportions
components
major
cities
such
as
Beijing,
Shanghai,
Guangzhou
their
surrounding
areas,
found
that
narrowing
gap
regions
associated
with
convergence
organic
(OM)
both
results
varying
strategies
tailored
distinct
characteristics
pollution
China.
Coordinated
governance
should
considered,
along
implementation
integrated
control
mitigation
measures
for
multiple
pollutants
further
enhance
Environmental Science and Ecotechnology,
Год журнала:
2025,
Номер
24, С. 100524 - 100524
Опубликована: Янв. 11, 2025
Ground-level
ozone
concentrations
rebounded
significantly
across
China
in
2022,
challenging
air
quality
management
and
public
health.
Identifying
the
drivers
of
this
rebound
is
crucial
for
designing
effective
mitigation
strategies.
Commonly
used
methods,
such
as
chemical
transport
models
machine
learning,
provide
valuable
insights
but
face
limitations-chemical
are
computationally
intensive,
while
learning
often
fails
to
address
confounding
factors
or
establish
causality.
Here
we
show
that
elevated
temperatures
increased
solar
radiation,
primary
meteorological
drivers,
collectively
account
57
%
total
increase,
based
on
an
integrated
analysis
ground-based
monitoring
data,
satellite
observations,
reanalysis
information
using
explainable
causal
inference
techniques.
Compared
year
2021,
90
stations
reported
increase
Formaldehyde
Nitrogen
ratio,
implying
a
growing
sensitivity
formation
nitrogen
oxide
levels.
These
findings
highlight
significant
role
changes
rebound,
urging
adoption
targeted
strategies
under
climate
warming,
particularly
through
varied
regional
consider
existing
anthropogenic
emission
levels
prospective
biogenic
volatile
organic
compounds.
This
identification
relationships
pollution
dynamics
can
support
data-driven
accurate
decision-making.
Atmospheric chemistry and physics,
Год журнала:
2025,
Номер
25(4), С. 2725 - 2743
Опубликована: Март 3, 2025
Abstract.
Ozone–temperature
sensitivity
is
widely
used
to
infer
the
impact
of
future
climate
warming
on
ozone.
However,
trends
in
ozone–temperature
and
possible
drivers
have
remained
unclear.
Here,
we
show
that
observed
summertime
surface
sensitivity,
defined
as
slope
best-fit
line
daily
anomalies
ozone
versus
maximum
temperature
(mΔO3-ΔTmax),
has
decreased
by
50
%
during
1990–2021
continental
United
States
(CONUS),
with
a
mean
decreasing
rate
−0.57
ppbv
K−1
per
decade
(p
<
0.01)
across
608
monitoring
sites.
We
conduct
high-resolution
GEOS-Chem
simulations
1995–2017
interpret
mΔO3-ΔTmax
underlying
mechanisms
CONUS.
The
identify
dominant
role
anthropogenic
nitrogen
oxide
(NOx)
emission
reduction
decrease.
find
approximately
76
simulated
decline
can
be
attributed
indirect
effects
arising
from
shared
collinearity
other
meteorological
(such
humidity,
ventilation,
transport)
remaining
portion
(24
%)
mostly
due
direct
effects,
particular
four
explicit
temperature-dependent
processes,
including
biogenic
volatile
organic
compound
(BVOC)
emissions,
soil
NOx
dry
deposition,
thermal
decomposition
peroxyacetyl
nitrate
(PAN).
With
reduced
expected
enhancement
temperature-driven
BVOC
PAN
decreases,
contributing
mΔO3-ΔTmax.
emissions
increase
reduction,
indicating
an
increasing
shaping
sensitivity.
As
indicated
mΔO3-ΔTmax,
model
estimate
1995
2017
lowered
low
high
temperatures
6.8
averaged
over
CONUS,
significantly
reducing
risk
extreme-ozone-pollution
events
under
temperatures.
Our
study
illustrates
dependency
levels,
which
should
considered
mitigation
warmer
climate.
Environmental Science & Technology,
Год журнала:
2024,
Номер
58(46), С. 20378 - 20388
Опубликована: Ноя. 7, 2024
Global
warming
and
elevated
ozone
(O3)
levels
are
gradually
gaining
widespread
attention,
exposure
to
which
may
cause
many
physiological
changes
associated
with
cardiovascular
events
such
as
hypertension,
cardiomyocyte
apoptosis,
etc.
In
addition,
ischemic
heart
disease
(IHD)
is
the
leading
of
death
worldwide.
However,
contributions
temperature
O3,
independently
or
in
combination,
IHD
mortality
not
well
understood.
This
study
employs
a
two-stage
analytical
protocol
(generalized
additive
model
followed
by
meta-analysis)
explore
respective
associations
O3
mortality,
determine
their
possible
mediation
interaction
effects.
Our
results
suggest
that
increases
10
μg/m3
1
°C
at
lag01
day
increased
risks
0.789%
0.686%,
respectively.
can
mediate
relationship
between
pooled
estimate
0.140%,
while
association
0.162%.
The
multiplicative
effects
were
significantly
mortality.
findings
demonstrate
higher
concentrations
increase
human
risk
through
effects,
providing
scientific
basis
for
synergistic
management
interventions.
Environmental Science & Technology,
Год журнала:
2025,
Номер
unknown
Опубликована: Янв. 2, 2025
Anemia
in
women
of
reproductive
age
(WRA)
presents
a
pressing
global
public
health
issue,
particularly
low-
and
middle-income
countries
(LMICs).
Yet,
the
potential
impact
ozone
(O
