Authorea (Authorea),
Journal Year:
2022,
Volume and Issue:
unknown
Published: Dec. 20, 2022
In
2021,
the
World
Health
Organization
(WHO)
ranked
Nigeria
among
most
polluted
nations
in
world,
an
indication
of
a
deteriorating
air
quality,
especially
major
urban
areas
country,
which
might
pose
adverse
human
health
impacts.
this
study,
Integrated
Source
Apportionment
Method
(ISAM)
tool
Community
Multiscale
Air
Quality
(CMAQ)
model
(CMAQ-ISAM)
was
employed
to
quantify
contributions
eight
emissions
sectors
fine
particulate
matter
(PM2.5)
and
its
components
Lagos
during
prolonged
severe
atmospheric
pollution
episode
(APE)
January
2021.
The
influence
meteorological
conditions
on
formation
dispersion
PM2.5
APE
also
elucidated.
Spatially,
elevated
concentrations
were
found
northwestern
region
Lagos,
area
with
larger
anthropogenic
emissions.
Residential
industry
two
sources
PM2.5.
contributed
total
(~40
μg/m3),
followed
by
(~20
μg/m3).
High
secondary
inorganic
aerosols
(SIA)
at
northwest
upper
northern
majorly
attributed
residential
sectors.
addition,
sulfate
accounted
for
largest
fraction
PM2.5,
residential,
industry,
energy
being
sources.
Residential,
on-road
dominated
nitrate,
while
contributors
ammonium.
Furthermore,
greatly
enhanced
unfavorable
conditions.
This
study
provides
insights
designing
effective
control
strategies
mitigate
future
Lagos.
Sustainable Development,
Journal Year:
2024,
Volume and Issue:
32(5), P. 4354 - 4373
Published: Jan. 30, 2024
Abstract
The
escalation
of
carbon
emissions
has
propelled
global
warming
into
a
issue
requiring
urgent
attention.
As
primary
contributors
to
emissions,
cities
constitute
the
central
battleground
for
efforts
aimed
at
emission
reduction.
Notably,
China,
world's
largest
emitter,
channeled
substantial
human
and
financial
resources
towards
development
low‐carbon
cities.
However,
multifaceted
challenges
confronting
Chinese
city
construction
(LCC),
including
lack
clearly
defined
strategies
deficiencies
in
government
policy
implementation,
underscore
need
systematic
exploration
influencing
factors
mechanisms
overcome
these
obstacles.
In
response
this
pressing
need,
study
utilizes
conceptual
framework
that
is
deeply
rooted
complex
urban
social‐economic‐natural‐management
ecosystem.
Within
framework,
meticulously
identified
12
and,
employing
pressure‐state‐response
(PSR)
model,
categorized
them
elucidate
dynamic
multidimensional
nature
construction.
Subsequently,
DEMATEL
method
was
employed
explore
causality
centrality
factors,
ISM
used
analyze
hierarchical
structure
LCC.
Three
paths
from
LCC
pressure
were
established.
Finally,
three
major
implications
proposed
help
LCC:
(i)
improve
strategic
planning
applicability
one‐city‐one‐policy
manner,
(ii)
strengthen
green
economy's
long‐term
mechanism,
(iii)
use
enthusiasm
market
forces
public
participation.
Atmosphere,
Journal Year:
2024,
Volume and Issue:
15(7), P. 852 - 852
Published: July 19, 2024
Ozone
at
ground
level
(O3)
is
an
air
pollutant
that
formed
from
primary
precursor
gases
like
nitrogen
oxides
(NOx)
and
volatile
organic
compounds
(VOCs).
It
plays
a
significant
role
as
to
highly
reactive
hydroxyl
(OH)
radicals,
which
ultimately
influence
the
lifespan
of
various
in
atmosphere.
The
elevated
surface
O3
levels
resulting
anthropogenic
activities
have
detrimental
effects
on
both
human
health
agricultural
productivity.
This
paper
provides
comprehensive
analysis
variations
across
regions
Indian
subcontinent,
focusing
spatial
temporal
changes.
study
based
in-depth
review
literature
spanning
last
thirty
years
India.
Based
findings
latest
study,
distribution
indicates
rise
approximately
50–70
ppbv
during
summer
pre-monsoon
periods
northern
region
Indo-Gangetic
Plain.
Moreover,
(40–70
ppbv)
are
observed
pre-monsoon/summer
season
western,
southern,
peninsular
regions.
investigation
also
underscores
ground-based
observations
diurnal
seasonal
alterations
two
separate
sites
(rural
urban)
Kannur
district,
located
southern
India,
over
duration
nine
starting
January
2016.
concentration
exhibits
increasing
trend
7.91%
site)
5.41%
(urban
site),
ascribed
vehicular
industrial
operations.
presents
succinct
summary
fluctuations
solar
eclipses
nocturnal
firework
displays
subcontinent.
Journal of Geophysical Research Atmospheres,
Journal Year:
2023,
Volume and Issue:
128(13)
Published: June 26, 2023
Abstract
In
2021,
the
World
Health
Organization
ranked
Nigeria
among
most
polluted
nations
in
world,
an
indication
of
a
deteriorating
air
quality,
especially
major
urban
areas
country,
which
might
pose
adverse
human
health
impacts.
this
study,
Integrated
Source
Apportionment
Method
(ISAM)
tool
Community
Multiscale
Air
Quality
(CMAQ)
model
(CMAQ‐ISAM)
was
employed
to
quantify
contributions
eight
emissions
sectors
fine
particulate
matter
(PM
2.5
)
and
its
components
Lagos
during
prolonged
severe
atmospheric
pollution
episode
(APE)
January
2021.
The
influence
meteorological
conditions
on
formation
dispersion
PM
APE
also
elucidated.
Spatially,
elevated
concentrations
were
found
northwestern
region
Lagos,
area
with
larger
anthropogenic
emissions.
Residential
industry
two
sources
.
contributed
total
(∼40
μg/m
3
),
followed
by
(∼20
).
High
secondary
inorganic
aerosols
(SIA)
at
northwest
upper
northern
majorly
attributed
residential
sectors.
addition,
sulfate
accounted
for
largest
fraction
,
residential,
industry,
energy
being
sources.
Residential,
on‐road
dominated
nitrate,
while
contributors
ammonium.
Furthermore,
greatly
enhanced
unfavorable
conditions.
This
study
provides
insights
designing
effective
control
strategies
mitigate
future
Lagos.
Environmental Science & Technology Letters,
Journal Year:
2023,
Volume and Issue:
10(9), P. 779 - 785
Published: Aug. 30, 2023
By
using
an
improved
process-level
quantification
method
implemented
in
the
WRF-Chem
model,
we
provide
a
quantitative
analysis
on
contribution
of
each
physical/chemical
process
to
PM2.5
change
from
before
during
COVID-19
lockdown
and
further
identify
dominant
responsible
for
inverse
changes
over
southern
northern
North
China
Plain
(NCP).
From
period,
concentration
NCP
decreased
by
61.0
μg
m–3;
weakened
aerosol
chemistry
production
mainly
resulting
emission
mitigation
precursors
was
identified
be
leading
decrease.
However,
suffered
unexpected
increase
10.0
m–3,
which
primarily
attributed
advection
dilution
induced
wind
speed.
The
method,
superior
traditional
one,
can
applied
any
two
periods
rather
than
instantaneous
time
points,
therefore
it
exerts
new
understand
pollution
evolution
mechanism
perspective.
