Atmosphere,
Год журнала:
2024,
Номер
15(12), С. 1426 - 1426
Опубликована: Ноя. 27, 2024
This
study
investigates
the
temporal
and
spatial
variations
in
PM2.5
concentrations
Dhaka,
Bangladesh,
from
2001
to
2023
evaluates
impact
of
meteorological
factors
effectiveness
mitigation
strategies
on
air
pollution.
Using
satellite
ground-based
data,
this
analyzed
seasonal
trends,
daily
fluctuations,
influence
COVID-19
lockdown
measures
quality.
Our
findings
reveal
a
persistent
increase
levels,
particularly
during
winter,
with
frequently
exceeding
WHO
guidelines.
analysis
suggests
significant
correlations
between
conditions
concentration,
highlighting
role
conditions,
such
as
rainfall,
humidity,
temperature,
modulating
levels.
found
that
levels
exhibited
inverse
correlation
relative
humidity
(r
=
−0.72),
rainfall
−0.69),
temperatures
−0.79),
mitigating
pollution
Additionally,
underscores
temporary
improvements
quality
periods,
demonstrating
potential
benefits
sustained
emission
control
measures.
The
research
emphasizes
need
for
comprehensive
multi-faceted
management
strategies,
including
stringent
vehicular
industrial
emissions
regulations,
enhancement
urban
green
spaces,
public
awareness
campaigns
mitigate
adverse
health
impacts
Dhaka.
Results in Engineering,
Год журнала:
2024,
Номер
22, С. 102039 - 102039
Опубликована: Март 24, 2024
Changes
in
land
use
and
cover
are
imperative
drivers
of
climate
change
urbanization.
The
conversion
modifies
the
physical
thermal
characteristics
surface
also
has
an
impact
on
air
quality.
This
study
aims
to
assess
potential
Land
Use
Cover
(LULC)
quality
Gujarat
state,
India
for
6
years,
2018,
2020,
2023.
Six
land-use
types,
water
bodies,
forest,
agricultural
land,
built-up,
barren
scrubland
obtained
from
Landsat
8
product
processed
GEE,
where
LULC
each
category
was
estimated.
analysis
findings
indicated
that
variations
pollution
response
exhibit
distinct
differences
across
different
regions,
influenced
by
natural
factors
or
human
activities
like
deforestation
Over
years
2018–2023,
seems
consistently
decrease
area,
but
urban
areas
saw
exponential
growth.
combined
percentage
forest
area
slightly
decreased
61.08%
60.7%,
while
spread
increased
4.07%
5.13%.
bare
29.59%
27.56%,
mainly
due
urbanization
converting
soil
into
built-up
areas.
Sentinel-5P
satellite
data
used
estimate
atmospheric
i.e.,
carbon
mono-oxide
(CO),
Nitrogen
dioxide
(NO2),
Methane
(CH4),
Sulfur
Dioxide
(SO2),
formaldehyde
(HCHO).
past
decade,
a
significant
portion
transitioned
vegetation
western
region,
rapidly
expanded
eastern
central-western
parts.
