Atmospheric chemistry and physics,
Journal Year:
2021,
Volume and Issue:
21(9), P. 7253 - 7269
Published: May 12, 2021
Abstract.
Ground-level
ozone
(O3)
pollution
has
been
steadily
getting
worse
in
most
parts
of
eastern
China
during
the
past
5
years.
The
non-linearity
O3
formation
with
its
precursors
like
nitrogen
oxides
(NOx=
NO
+
NO2)
and
volatile
organic
compounds
(VOCs)
are
complicating
effective
abatement
plans.
diagnosis
from
space-based
observations,
i.e.
ratio
formaldehyde
(HCHO)
columns
to
tropospheric
NO2
(HCHO
/
NO2),
previously
proved
be
highly
consistent
our
current
understanding
surface
chemistry.
HCHO
thresholds
distinguishing
sensitivity
depend
on
regions
chemistry
interactions
aerosol.
To
shed
more
light
over
China,
we
have
derived
by
directly
connecting
satellite-based
observations
ground-based
measurements
major
Chinese
cities
this
study.
We
find
that
a
VOC-limited
regime
occurs
for
<
2.3,
NOx-limited
>
4.2.
between
2.3
4.2
reflects
transition
two
regimes.
Our
method
shows
tends
urban
areas
rural
remote
China.
there
is
shift
some
transitional
associated
rapid
drop
anthropogenic
NOx
emissions,
owing
widely
applied
rigorous
emission
control
strategies
2016
2019.
This
detected
spatial
expansion
supported
rising
concentrations.
enhanced
concentrations
COVID-19
lockdown
indicate
protocol
simultaneous
emissions
VOC
controls
essential
Sustainable Cities and Society,
Journal Year:
2020,
Volume and Issue:
62, P. 102382 - 102382
Published: July 13, 2020
The
COVID-19
pandemic
elicited
a
global
response
to
limit
associated
mortality,
with
social
distancing
and
lockdowns
being
imposed.
In
India,
human
activities
were
restricted
from
late
March
2020.
This
'anthropogenic
emissions
switch-off'
presented
an
opportunity
investigate
impacts
of
mitigation
measures
on
ambient
air
quality
in
five
Indian
cities
(Chennai,
Delhi,
Hyderabad,
Kolkata,
Mumbai),
using
in-situ
measurements
2015
For
each
year,
we
isolated,
analysed
compared
fine
particulate
matter
(PM2.5)
concentration
data
25
11
May,
elucidate
the
effects
lockdown.
Like
other
cities,
observed
substantial
reductions
PM2.5
concentrations,
19
43%
(Chennai),
41–53%
(Delhi),
26–54%
(Hyderabad),
24–36%
(Kolkata),
10–39%
(Mumbai).
Generally,
larger
traffic
volumes
showed
greater
reductions.
Aerosol
loading
decreased
by
29%
11%
4%
1%
(Mumbai)
against
2019
data.
Health
related
economic
impact
assessments
indicated
630
prevented
premature
deaths
during
lockdown
across
all
valued
at
0.69
billion
USD.
Improvements
may
be
considered
temporary
benefit
as
revitalising
economy
could
reverse
this
trend.
Regulatory
bodies
must
closely
monitor
levels,
which
currently
offer
baseline
for
future
plans.
Operations Management Research,
Journal Year:
2021,
Volume and Issue:
15(1-2), P. 233 - 248
Published: March 18, 2021
The
novel
COVID-19
has
emerged
as
a
severe
threat
to
global
health
globally,
affecting
over
210
countries
and
regions.
profound
dilemma
interrupted
trade
social
activities
enormously
influenced
daily
lives
through
distance
confinements.
outbreak
of
exacerbated
human
misery
due
the
crippling
economies
globally.
effects
are
substantial
on
health,
economy,
environment,
society.
Nearly
every
country
is
trying
prevent
transmission
this
communicable
disease.
Remedial
policies
include
testing
treating
patients,
isolating
suspects
contact
tracking,
banning
public
gatherings,
asserting
complete
or
partial
shutdown.
In
context,
present
paper's
core
objective
investigate
impact
pandemic
environment
energy
market,
society,
protective
measures
taken
reduce
transmission.
study's
main
contribution
revealed
lessons
provide
insights
for
business
efficacy
governments'
initiative
Finally,
paper
describes
future
actions
governments,
leaders,
providers,
all
stakeholders
in
response
crisis.
The Science of The Total Environment,
Journal Year:
2020,
Volume and Issue:
740, P. 140005 - 140005
Published: June 5, 2020
This
paper
investigates
the
correlation
between
high
level
of
coronavirus
SARS-CoV-2
infection
accelerated
transmission
and
lethality,
surface
air
pollution
in
Milan
metropolitan
area,
Lombardy
region
Italy.
For
January-April
2020
period,
time
series
daily
average
inhalable
gaseous
pollutants
ozone
(O3)
nitrogen
dioxide
(NO2),
together
climate
variables
(air
temperature,
relative
humidity,
wind
speed,
precipitation
rate,
atmospheric
pressure
field
Planetary
Boundary
Layer)
were
analyzed.
In
spite
being
considered
primarily
transmitted
by
indoor
bioaerosols
droplets
infected
surfaces
or
direct
human-to-human
personal
contacts,
it
seems
that
levels
urban
pollution,
conditions
have
a
significant
impact
on
diffusion.
Exhibited
positive
correlations
ambient
negative
NO2
with
increased
rates
COVID-19
infections
(Total
number,
Daily
New
Total
Deaths
cases),
can
be
attributed
to
airborne
distribution.
The
results
show
averaged
O3
temperature
inversely
humidity
rates.
Viral
genome
contains
distinctive
features,
including
unique
N-terminal
fragment
within
spike
protein,
which
allows
attachment
pollutants.
At
this
moment
is
not
clear
if
through
diffusion,
presence
outdoor
aerosols,
protein
"spike"
new
involved
infectious
agent
from
reservoir
susceptible
host
during
highest
nosocomial
outbreak
some
agglomerated
industrialized
areas
like
is.
Also,
collected
data
for
cold
season
(winter-early
spring)
when
usually
lower
values
than
summer,
findings
study
support
possibility
as
acts
virus
incubator.
Being
novel
pandemic
version,
might
ongoing
summer
associated
higher
temperatures,
low
levels.
International Journal of Environmental Science and Technology,
Journal Year:
2020,
Volume and Issue:
17(11), P. 4655 - 4666
Published: Sept. 1, 2020
Coronavirus
Disease
2019
(COVID-19)
is
the
official
name
of
a
respiratory
infectious
disease
caused
by
new
coronavirus
that
started
first
in
Wuhan,
China,
and
outspread
worldwide
with
an
unexpectedly
fast
speed.
Flights
have
been
canceled
transportation
has
closed
nationwide
across
international
borders.
As
consequence,
economic
activity
stopped
stock
markets
dropped.
The
COVID-19
lockdown
several
social
effects.
Additionally,
impacts
on
global
migration.
On
other
hand,
such
lockdown,
along
minimal
human
mobility,
impacted
natural
environment
somewhat
positively.
Overall
carbon
emissions
dropped,
led
to
improvement
air
quality
reduction
water
pollution
many
cities
around
globe.
A
summary
existing
reports
environmental
pandemic
are
discussed
important
findings
presented
focusing
aspects:
pollution,
waste
management,
improvements,
fires,
wildlife,
migration,
sustainability.
International Journal of Environmental Research and Public Health,
Journal Year:
2021,
Volume and Issue:
18(11), P. 6053 - 6053
Published: June 4, 2021
Integration
of
digital
technologies
and
public
health
(or
healthcare)
helps
us
to
fight
the
Coronavirus
Disease
2019
(COVID-19)
pandemic,
which
is
biggest
crisis
humanity
has
faced
since
1918
Influenza
Pandemic.
In
order
better
understand
healthcare,
this
work
conducted
a
systematic
comprehensive
review
with
purpose
helping
combat
COVID-19
pandemic.
This
paper
covers
background
information
research
overview
summarizes
its
applications
challenges
in
finally
puts
forward
prospects
healthcare.
First,
main
concepts,
key
development
processes,
common
application
scenarios
integrating
healthcare
were
offered
part
information.
Second,
bibliometric
techniques
used
analyze
output,
geographic
distribution,
discipline
collaboration
network,
hot
topics
before
after
We
found
that
pandemic
greatly
accelerated
on
integration
Third,
cases
China,
EU
U.S
using
collected
analyzed.
Among
these
technologies,
big
data,
artificial
intelligence,
cloud
computing,
5G
are
most
effective
weapons
Applications
show
play
an
irreplaceable
role
controlling
spread
COVID-19.
By
comparing
three
regions,
we
contend
China's
success
avoiding
second
wave
integrate
large
scale
without
hesitation.
Fourth,
field
summarized.
These
mainly
come
from
four
aspects:
data
delays,
fragmentation,
privacy
security,
security
vulnerabilities.
Finally,
study
provides
future
addition,
also
provide
policy
recommendations
for
other
countries
use
technology