Atmosphere,
Год журнала:
2025,
Номер
16(4), С. 411 - 411
Опубликована: Март 31, 2025
PM2.5
plays
a
significant
role
in
urban
climate,
especially
as
development
accelerates.
In
this
study,
surface
PM2.5,
skin
temperature,
air
net
longwave
radiation,
shortwave
sensible
heat
flux,
and
latent
flux
were
directly
analyzed
Nanchang
from
2020
to
2022.
The
results
indicate
that
is
highest
during
winter
lowest
summer.
On
an
annual
scale,
reduces
temperatures
at
rate
of
0.75
°C/(μg
m−3)
by
decreasing
solar
radiation
increasing
night.
Conversely,
it
increases
temperature
absorbing
leading
inversion.
Furthermore,
influences
modulating
the
fluxes.
Energy Geoscience,
Год журнала:
2022,
Номер
3(3), С. 255 - 262
Опубликована: Март 25, 2022
Mining
plays
a
prominent
role
in
the
economy
worldwide
since
human
efforts
have
been
more
concentrated
extraction
than
recycling
of
natural
resources.
Ores
composed
various
minerals
vary
according
to
geological
evolution.
These
are
raw
materials
for
conventional
industries
or
fossil
fuels
power
generation.
They
can
also
be
used
new
technologies.
The
mining
industry
triggers
intense
environmental
impacts.
Human
exposure
multiple
small
particles
from
effluent,
such
as
dust,
uranium,
iron,
lead,
zinc,
silicon,
titanium,
sulfur,
nitrogen,
platinum,
chromium,
vanadium,
manganese,
and
mercury,
is
health
risk.
Such
elements
several
pathological
effects,
respiratory
cardiovascular,
chronic
inflammation,
neurodegenerative
diseases.
Additionally,
results
severe
soil,
water
(surface
aquifer),
air
contamination,
reaching
large
areas
far
away
source.
Negligence
companies,
with
recovery
ancient
mined
during
early
development
laws
regulations,
compromises
integrity
extended
periods,
increasing
coverage
affected
areas.
This
review
evaluates
toxicological
effects
on
humans
exposed
wastes
impact
these
compounds
ecosystem.
our
evaluation
by
government,
manufacturers,
scientists,
private
organizations,
decision-makers,
readers
different
knowledge
explore
potential
risk
ecosystem
health.
Journal of Geophysical Research Atmospheres,
Год журнала:
2024,
Номер
129(2)
Опубликована: Янв. 12, 2024
Abstract
Poor
air
quality
is
often
experienced
in
densely
populated
areas
located
alongside
large
rivers.
The
presence
of
a
river
valley
can
modify
local
meteorology,
potentially
interfering
with
the
formation
pollutants
such
as
PM
2.5
.
However,
mechanisms
behind
valleys
and
its
impacts
on
surrounding
regions
remain
poorly
understood.
This
study
investigates
Nanjing
reach
Yangtze
River,
considering
complex
terrain
anthropogenic
emissions,
through
numerical
simulation.
Simulated
results
revealed
higher
concentrations
along
River
compared
to
average
Nanjing,
primarily
driven
by
elevated
nitrate
level.
Factors
humidity,
wind
speed,
ageostrophic
field,
shallow
boundary
layer
were
identified
key
contributors
increased
river.
Our
demonstrates
significant
impact
thermal
circulations
formation,
resulting
from
interaction
between
water
body
urban
area.
phenomenon
was
confirmed
sensitivity
experiments,
which
showed
attenuated
absence
River.
Source
apportionment
process
analysis
confirm
dominant
roles
circulation
related
horizontal
vertical
advections,
diurnal
fluctuations,
shaping
variations
Inorganic
chemistry
processes
also
played
non‐negligible
role,
particularly
during
polluted
conditions.
Local
are
crucial
for
highlighting
need
comprehensive
strategies
tackle
pollution
similar
regions.
Atmospheric chemistry and physics,
Год журнала:
2025,
Номер
25(2), С. 727 - 739
Опубликована: Янв. 21, 2025
Abstract.
Our
understanding
of
aerosol
optical
depth
(AOD)
in
Antarctica
remains
limited
due
to
the
scarcity
ground
observation
stations
and
daylight
days.
Utilizing
data
from
CE318-T
photometer
spanning
January
2020
April
2023
at
Zhongshan
Station,
we
analyzed
seasonal,
monthly,
diurnal
variations
AOD
Ångström
exponent
(AE).
median
values
increased
spring
(0.033)
winter
(0.115),
while
AE
peaked
during
summer
(1.010)
autumn
(1.034),
declining
(0.381),
indicating
a
transition
dominant
particle
size
fine
coarse
mode
between
winter.
Monthly
mean
variation
closely
paralleled
proportion
<
1,
suggesting
fluctuations
coarse-mode
proportions
drive
variation.
The
high
were
associated
with
an
contribution
particles,
growth
fine-mode
particles.
We
observed
peak
(∼
0.06)
14:00
local
time
(LT)
possibly
slight
decrease
boundary
layer
height
(BLH).
Additionally,
higher
(lower)
wind
speeds
corresponded
lower
(higher)
values,
diffusion
(accumulation)
effect.
temperature
showed
insignificant
positive
correlation
(R
=
0.22,
p
0.40),
relative
humidity
exhibited
significant
negative
−0.59,
0.02).
Backward
trajectory
analysis
revealed
that
particles
ocean
predominantly
contributed
daily
on
low-AOD
days
originated
mainly
air
mass
over
Antarctic
Plateau.
This
study
enhances
properties
seasonal
behaviors
aerosols
coastal
Antarctic.
Specifically,
measurements
polar
night
address
lack
validation
for
simulations.
speeds,
temperatures,
contribute
masses
significantly
impact
levels.
These
findings
help
us
infer
patterns
based
meteorological
changes,
providing
valuable
insights
climate
modeling
context
global
change.
