Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: May 30, 2024
Abstract
Traditional
atmospheric
chemistry
posits
that
sulfur
dioxide
(SO
2
)
can
be
oxidized
to
sulfate
4
2–
through
aqueous-phase
reactions
in
clouds
and
gas-phase
oxidation.
Despite
adequate
knowledge
of
traditional
mechanisms,
several
studies
have
highlighted
the
potential
for
SO
oxidation
within
aerosol
water.
Given
widespread
presence
tropospheric
aerosols,
2−
production
water
could
a
pervasive
global
impact.
Here,
we
quantify
contributions
aqueous
pathways
formation
based
on
GEOS-Chem
simulations
subsequent
theoretical
calculations.
Hydrogen
peroxide
(H
O
significantly
influences
continental
regions
both
horizontally
vertically.
Over
past
two
decades,
shifts
typical
cities
reveal
an
intriguing
trend:
despite
reductions
emissions,
increased
capacities,
like
rising
H
levels,
prevent
steady
decline
concentrations.
Abating
oxidants
would
facilitate
benefit
reduction
positive
feedback
mitigation.
Atmospheric chemistry and physics,
Journal Year:
2021,
Volume and Issue:
21(21), P. 16555 - 16574
Published: Nov. 12, 2021
Abstract.
Many
studies
have
investigated
the
impacts
of
aerosol
on
intensity
and
amount
precipitation,
but
few
been
done
so
regarding
start
peak
times
precipitation.
Using
high-resolution
aerosol,
meteorological
data
in
warm
season
June–August
from
2015
to
2020,
this
study
investigates
influence
precipitation
over
three
different
regions,
North
China
Plain
(NCP),
Yangtze
River
Delta
(YRD),
Pearl
(PRD).
It
shows
that
period
with
highest
frequency
time,
defined
as
frequent
(FP)
is
delayed
prolonged
by
aerosols
NCP,
contributing
similar
durations
YRD,
PRD.
This
also
types
(absorbing
versus
scattering)
caused
influences
regions.
The
time
3
h
advanced
NCP
2
PRD
during
FP
no
response
YRD.
Compared
stratiform
convective
more
sensitive
aerosol.
show
responses
aerosols.
further
can
vary
conditions.
Humidity
beneficial
which
advance
prolong
duration
time.
Correspondingly,
are
significant
under
low
humidity
or
weak
tropospheric
stability
vertical
wind
shear
(WS)
contrary
aerosols,
resulting
fact
WS
inhibits
effects
Environmental Science & Technology,
Journal Year:
2022,
Volume and Issue:
56(15), P. 10608 - 10618
Published: July 5, 2022
Particulate
sulfate
is
one
of
the
most
important
components
in
atmosphere.
The
observation
rapid
aerosol
production
during
haze
events
provoked
scientific
interest
multiphase
oxidation
SO2
aqueous
particles.
Diverse
pathways
can
be
enhanced
or
suppressed
under
different
acidity
levels
and
high
ionic
strength
conditions
atmospheric
aerosol.
importance
to
chemistry
has
been
verified
laboratory
conditions,
though
studies
actual
atmosphere
are
still
limited.
By
utilizing
online
observations
developing
an
improved
solute
strength-dependent
chemical
thermodynamics
kinetics
model
(EF-T&K
model,
EF
enhancement
factor
that
represents
effect
on
aqueous-phase
reaction),
we
provided
quantitative
evidence
H2O2
pathway
was
nearly
100
times
dominated
formation
for
entire
years
(66%)
Tianjin
(a
northern
city
China).
TMI
(oxygen
catalyzed
by
transition-metal
ions)
(14%)
NO2
got
second-highest
contributions.
Machine
learning
supported
result
more
affected
pathway.
collaborative
effects
oxidants
were
further
investigated
using
EF-T&K
model.
Our
findings
highlight
effectiveness
adopting
target
oxidant
control
as
a
new
direction
sustainable
mitigation
sulfate,
given
already
low
concentrations
China.
Geophysical Research Letters,
Journal Year:
2023,
Volume and Issue:
50(2)
Published: Jan. 18, 2023
Abstract
Aerosol
effects
on
convective
precipitation
is
critical
for
understanding
human
impacts
extreme
weather
and
the
hydrological
cycle.
However,
even
their
signs
magnitude
remain
debatable.
In
particular,
aerosol
vertical
structure
of
have
not
been
systematically
examined
yet.
Combining
6‐year
space‐borne
ground‐based
observations
over
North
China
Plain,
we
show
a
boomerang‐shape
effect
top
height
precipitation,
from
invigoration
to
suppression.
Further
analyses
reveal
that
aerosols
play
distinct
rate
at
different
layers.
Particularly,
near
surface
shows
no
significant
responses
precipitation‐top
due
strong
evaporation.
The
competition
energy
between
released
condensation
freezing
absorbed
by
evaporation
contributes
can
explain
effect.
Nature Communications,
Journal Year:
2024,
Volume and Issue:
15(1)
Published: May 30, 2024
Abstract
Traditional
atmospheric
chemistry
posits
that
sulfur
dioxide
(SO
2
)
can
be
oxidized
to
sulfate
4
2–
through
aqueous-phase
reactions
in
clouds
and
gas-phase
oxidation.
Despite
adequate
knowledge
of
traditional
mechanisms,
several
studies
have
highlighted
the
potential
for
SO
oxidation
within
aerosol
water.
Given
widespread
presence
tropospheric
aerosols,
2−
production
water
could
a
pervasive
global
impact.
Here,
we
quantify
contributions
aqueous
pathways
formation
based
on
GEOS-Chem
simulations
subsequent
theoretical
calculations.
Hydrogen
peroxide
(H
O
significantly
influences
continental
regions
both
horizontally
vertically.
Over
past
two
decades,
shifts
typical
cities
reveal
an
intriguing
trend:
despite
reductions
emissions,
increased
capacities,
like
rising
H
levels,
prevent
steady
decline
concentrations.
Abating
oxidants
would
facilitate
benefit
reduction
positive
feedback
mitigation.
