National Science Review,
Journal Year:
2021,
Volume and Issue:
9(2)
Published: June 13, 2021
Smog
chamber
experimental
systems,
which
have
been
widely
used
in
laboratory
simulation
for
studying
atmospheric
processes,
are
comprehensively
reviewed
this
paper.
The
components,
development
history,
main
research
topics
and
achievements
of
smog
chambers
introduced.
Typical
the
world,
including
their
volumes,
wall
materials,
light
sources
features,
summarized
compared.
Key
factors
influences
on
environment
discussed,
loss,
emission
background
pollutants.
features
next-generation
application
prospect
future
studies
also
outlined
Atmospheric chemistry and physics,
Journal Year:
2021,
Volume and Issue:
21(15), P. 11905 - 11925
Published: Aug. 10, 2021
Abstract.
New
particle
formation
(NPF)
events
occur
almost
everywhere
in
the
world
and
can
play
an
important
role
as
a
source.
The
frequency
characteristics
of
NPF
vary
spatially,
this
variability
is
yet
to
be
fully
understood.
In
present
study,
long-term
size
distribution
datasets
(minimum
3
years)
from
13
sites
various
land
uses
climates
across
Europe
were
studied,
events,
deriving
secondary
not
traffic-related
nucleation,
extracted
analysed.
was
consistently
found
higher
at
rural
background
sites,
while
growth
rates
newly
formed
particles
roadsides
(though
many
cases
differences
between
small),
underlining
importance
abundance
condensable
compounds
anthropogenic
origin
there.
rate
summer
all
studied.
urban
presented
highest
uncertainty
due
greater
compared
other
two
types
site.
incoming
air
masses
specific
conditions
associated
with
them
greatly
affect
events.
general,
cleaner
probability
for
more
polluted
ones
show
rates.
However,
different
patterns
found,
even
close
proximity
(<
200
km),
local
each
Region-wide
also
studied
same
although
some
which
seasonality
neighbouring
sites.
responsible
increase
number
concentration
ultrafine
than
400
%
on
day
their
occurrence.
degree
enhancement
less
increased
contribution
sources
within
environment.
It
evident
that,
variables
(such
solar
radiation
intensity,
relative
humidity,
or
concentrations
pollutants)
appear
have
similar
influence
it
impossible
predict
site
using
just
these
variables,
crucial
conditions.
Reviews of Modern Physics,
Journal Year:
2023,
Volume and Issue:
95(4)
Published: Nov. 9, 2023
Atmospheric
nanoparticles
can
serve
as
nuclei
for
cloud
droplets,
thereby
inducing
significant
but
uncertain
effects
on
the
radiative
forcing
of
climate
system.
This
article
focuses
physicochemical
processes
that
govern
growth
these
particles
from
formation
molecular
clusters
until
reach
sizes
where
they
act
condensation
nuclei.
The
review
describes
latest
developments
in
measurement
and
modeling
connects
domains
to
large-scale
simulations
such
Earth
system
models.
authors
recommend
closer
coordination
among
laboratory
studies,
atmospheric
measurements,
understand
importance
Environmental Science & Technology,
Journal Year:
2024,
Volume and Issue:
58(24), P. 10664 - 10674
Published: June 8, 2024
New
particle
formation
(NPF)
is
a
major
source
of
atmospheric
aerosol
particles,
including
cloud
condensation
nuclei
(CCN),
by
number
globally.
Previous
research
has
highlighted
that
NPF
less
frequent
but
more
intense
at
roadsides
compared
to
urban
background.
Here,
we
closely
examine
both
background
and
roadside
sites
in
Central
Europe.
We
show
the
concentration
oxygenated
organic
molecules
(OOMs)
greater
roadside,
OOMs
along
with
sulfuric
acid
onto
new
particles
sufficient
explain
growth
sites.
identify
hitherto
unreported
traffic-related
OOM
contributing
29%
16%
total
background,
respectively.
Critically,
this
undiscovered
an
essential
component
NPF.
Without
their
contribution
rates
subsequent
enhancements
survival,
>50
nm
produced
would
be
reduced
factor
21
site.
Reductions
hydrocarbon
emissions
from
road
traffic
may
thereby
reduce
numbers
CCN
counts.
Atmospheric chemistry and physics,
Journal Year:
2021,
Volume and Issue:
21(8), P. 6221 - 6230
Published: April 26, 2021
Abstract.
Ambient
measurements
combined
with
theoretical
simulations
have
shown
evidence
that
the
tropospheric
degradation
end-products
of
Freon
alternatives,
trifluoroacetic
acid
(TFA),
one
most
important
and
abundant
atmospheric
organic
substances,
can
enhance
nucleation
process
based
on
sulfuric
(SA)
dimethylamine
(DMA)
in
urban
environments.
However,
TFA
is
widespread
all
over
world
under
different
conditions,
such
as
temperature
precursor
concentration,
which
are
factors
potentially
influencing
thus
inducing
mechanisms.
Herein,
using
density
functional
theory
Atmospheric
Cluster
Dynamics
Code,
influence
concentrations
role
SA–DMA
has
been
investigated.
The
results
indicate
growth
trends
clusters
involving
increase
decrease
temperature.
enhancement
particle
formation
rate
by
contributions
SA–DMA–TFA
cluster
to
pathways
be
up
227-fold
95
%,
respectively,
at
relatively
low
temperature,
SA
high
DMA
winter,
boundary
layer,
or
megacities
far
away
from
industrial
sources
sulfur-containing
pollutants.
These
provide
perspective
realistic
environments,
revealing
potential
alternatives
a
wide
range
conditions.
National Science Review,
Journal Year:
2021,
Volume and Issue:
9(2)
Published: June 13, 2021
Smog
chamber
experimental
systems,
which
have
been
widely
used
in
laboratory
simulation
for
studying
atmospheric
processes,
are
comprehensively
reviewed
this
paper.
The
components,
development
history,
main
research
topics
and
achievements
of
smog
chambers
introduced.
Typical
the
world,
including
their
volumes,
wall
materials,
light
sources
features,
summarized
compared.
Key
factors
influences
on
environment
discussed,
loss,
emission
background
pollutants.
features
next-generation
application
prospect
future
studies
also
outlined
