Remote Sensing,
Journal Year:
2023,
Volume and Issue:
15(8), P. 2084 - 2084
Published: April 14, 2023
To
reduce
air
pollution,
China
adopted
rigorous
control
mechanisms
and
announced
the
Air
Pollution
Prevention
Control
Action
Plan
(APPCAP)
in
2013.
Here,
using
OMI
satellite,
NASA
Socioeconomic
Data
Application
Center
(SEDAC),
Fifth
ECMWF
(ERA5)
data
at
a
0.25°
×
resolution,
we
explored
changes
NO2,
PM,
SO2,
O3
climatology
over
response
to
between
2004
2021.
This
study
attempts
investigate
long
term
trend
analysis
of
pollution
climatic
variations
during
two
scenarios
before
(2004–2013)
after
(2013–2021)
APPCAP.
We
investigated
effects
APPCAP
adoption
geographically
weighted
regression
(GWR)
differential
models
assess
contribution
pollution.
The
spatial
representation
demonstrated
how
affected
factors
Several
important
findings
were
derived:
(1)
significantly
influenced
reduction
post-scenario
(2013–2021);
(2)
Mann
Kendall
test
that
all
pollutants
showed
an
increasing
pre-APPCAP,
while
they
decreasing
trend,
except
for
O3,
post-APPCAP;
(3)
factors,
MK
precipitation
mean
minimum
temperature
tmin
(4)
innovative
(ITA)
although
no
(5)
pre-scenario,
NO2
contributed
increase
maximum
(tmax)
by
0.62
°C,
PM
raising
0.41
reduced
tmax(tmin)
0.15
°C
(0.05
°C).
increased
tmax
with
magnitude
0.38
(7.38
mm),
(0.35
°C),
respectively,
post-scenario.
In
particular,
led
across
China.
results
discussion
presented
this
can
be
beneficial
policymakers
establish
long-term
management
plans
climatological
changes.
Geosystems and Geoenvironment,
Journal Year:
2024,
Volume and Issue:
3(2), P. 100263 - 100263
Published: Feb. 3, 2024
This
study
investigates
the
evolving
dry-wet
climate
patterns
in
southern
India
during
2020-2023,
focusing
on
impact
of
change.
Spanning
all
30
districts
Tamil
Nadu,
our
analysis
employs
HadGEM3-GC31-LL
model,
projecting
a
significant
increase
humidity
levels
from
2021
to
2100.
Key
findings
reveal
consistently
higher
post-monsoon
aridity
indices
compared
monsoon
season,
exceeding
0.65
and
raising
concerns
about
potential
flash
floods.
Regions
most
affected
include
Kanniyakumari,
Nilgiris,
Chennai
others.
To
address
these
challenges,
recommends
urgent
policy
interventions,
emphasizing
water
conservation
through
initiatives
like
farm
pond
construction.
Tailored
policies
are
crucial
shield
farmers
dairy
producers
economic
fallout,
with
an
emphasis
integrating
indigenous
knowledge
for
effective
change
adaptation.
In
summary,
this
research
highlights
need
immediate
action,
advocating
comprehensive
strategies
such
as
tailored
enhance
resilience
mitigate
studied
regions.
Atmospheric Environment X,
Journal Year:
2024,
Volume and Issue:
21, P. 100242 - 100242
Published: Jan. 1, 2024
Understanding
the
spatiotemporal
dynamics
of
aerosol
optical
characteristics
is
crucial
for
assessing
their
impact
on
climate
system.
This
study
focuses
Aerosol
Optical
Depth
(AOD)
at
550
nm,
measured
by
Moderate-resolution
Imaging
Spectroradiometer
(MODIS)
aboard
Terra
satellite,
over
a
decade
(2011–2021)
in
ten
major
cities
across
Pakistan.
Our
primary
objectives
were
to
investigate
AOD
variability,
assess
its
correlation
with
cloud
parameters,
examine
source
and
trajectory
aerosol-laden
air
masses,
analyze
relationship
between
Angstrom
exponent.
We
employed
Hybrid
single-particle
Lagrangian
Integrated
Trajectory
(HYSPLIT)
model
trace
mass
origins
paths.
exhibited
highest
values
low-latitude
urban
areas,
reflecting
significant
human
activity.
Conversely,
high-altitude
mountainous
regions
displayed
lowest
levels.
In
summer
(June–August),
peaked
1.19,
while
winter
(December–February),
it
dropped
0.24.
The
negative
exponent,
particularly
southern
western
Pakistan,
highlighted
particle
size
variations.
further
explored
relationships
five
parameters:
water
vapor
(WV),
fraction
(CF),
thickness
(COT),
top
temperature
(CTT),
pressure
(CTP).
These
found
be
weather-dependent.
provides
valuable
insights
into
spatio-temporal
contributing
better
understanding
climate.
information
essential
scientists,
meteorologists,
environmental
departments,
facilitating
informed
decision-making
modeling
region.
International Journal of Digital Earth,
Journal Year:
2024,
Volume and Issue:
17(1), P. 1 - 24
Published: April 25, 2024
The
Medium
Resolution
Spectral
Image
(MERSI)
is
a
MODIS-like
sensor
aboard
Fengyun-3
satellite.
first
version
of
MERSI
aerosol
algorithm
has
been
developed
based
on
MODIS
dark
target
(DT)
algorithm,
with
modified
models
for
estimating
surface
reflectance
and
an
adjusted
inland
water
masking
method
to
release
haze
aerosols.
This
study
applies
DT
the
global
observations
from
upgraded
(MERSI-II)
Fengyun-3D.
And
then,
Aerosol
Optical
Depth
(AOD)
results
year
2019–2020
are
validated
against
Robotic
Network
(AERONET)
data.
In
addition,
analyses
spatial
distribution
error
characteristics
MERSI-II
retrievals
presented.
overall
validation
demonstrates
that
perform
well
globally,
correlation
coefficient
0.877
67.1%
matchups
within
Expected
Error
envelope
±
(0.05
+
0.2τ),
which
close
statistic
metrics
products.
AODs
exhibit
similar
trends
dependence.
Moreover,
two
revealed
in
retrieval
performance
at
site
regional
scales,
as
analysis
monthly
averages.
These
findings
indicate
success
ported
algorithm.
Air Quality Atmosphere & Health,
Journal Year:
2023,
Volume and Issue:
16(12), P. 2553 - 2577
Published: Sept. 5, 2023
Abstract
Aerosols
absorption
contributes
significantly
to
the
total
radiative
effects
of
aerosols
and
so
an
important
component
forcing
estimates.
Therefore,
this
study
explores
spatiotemporal
distribution
ultraviolet
aerosol
index
(UVAI),
future
trends,
potential
sources
absorbing
their
relationship
with
temperature,
wind
speed,
precipitation
ozone
column
using
Ozone
Monitoring
Instrument
retrieved
UVAI
HYSPLIT
model
over
South
Asia
during
October
2004
March
2022.
The
mean
within
ranges
0.56–1.62
are
observed
Eastern
Southern
Pakistan
Northern
India
associated
dust
biomass
burning
aerosols.
interannual
variations
in
show
that
values
increases
from
1.73
3.11
2018–2021
Indo-Gangetic
Plain.
Contrary
this,
<
0
is
along
Karakorum
Himalaya
range
2005–2021
indicating
presence
non-absorbing
interaannual
U
VAI
reveal
highest
0.64
December
followed
by
0.51
July
Asia.
Seasonally,
shows
increasing
trend
at
rate
0.9064
DJF
−1
,
0.3810
JJA
0.2707
SON
0.0774
MAM
A
positive
correlation
0.56
between
speed
0.43
India.
0.1409,
0.1124,
0.1224,
0.1015,
0.1242
0.2054
per
year
Lahore,
Karachi,
Kanpur,
New-Delhi,
Varanasi,
Dhaka
maximum
5.55,
4.47,
4.51,
4.99,
4.61
4.65
respectively
period.
anthropogenic
productivity
analysis
reveals
primary
industry
secondary
lowering
whereas
tertiary
industry,
energy
consumption
gross
domestic
products
increase
loading
Moreover,
cluster
further
localized
trans-boundary
selected
cities.