Radiative impact of record-breaking wildfires from integrated ground-based data
Scientific Reports,
Journal Year:
2025,
Volume and Issue:
15(1)
Published: March 10, 2025
Abstract
The
radiative
effects
of
wildfires
have
been
traditionally
estimated
by
models
using
transfer
calculations.
Assessment
model-predicted
commonly
involves
information
on
observation-based
aerosol
optical
properties.
However,
lack
or
incompleteness
this
for
dense
plumes
generated
intense
reduces
substantially
the
applicability
assessment.
Here
we
introduce
a
novel
method
that
provides
additional
observational
constraints
such
assessments
widely
available
ground-based
measurements
shortwave
and
spectrally
resolved
irradiances
depth
(AOD)
in
visible
near-infrared
spectral
ranges.
We
apply
our
to
quantify
impact
record-breaking
occurred
Western
US
September
2020.
For
quantification
use
integrated
data
collected
at
Atmospheric
Measurements
Laboratory
Richland,
Washington,
USA
with
location
frequently
downwind
US.
demonstrate
remarkably
these
strongly
reduced
solar
surface
irradiance
(up
70%
450
Wm
-2
total
flux)
almost
completely
masked
sun
from
view
due
extremely
large
AOD
(above
10
500
nm
wavelength).
also
plume-induced
is
comparable
magnitude
those
produced
violent
volcano
eruption
1980
continental
cumuli.
Language: Английский
Diagnosing Excessive Subsidence Across the Southeast Atlantic in the Goddard Earth Observing System (GEOS) During ORACLES‐1
Journal of Geophysical Research Atmospheres,
Journal Year:
2024,
Volume and Issue:
129(23)
Published: Dec. 2, 2024
Abstract
Complicated
by
seasonal
transport
of
biomass
burning
aerosol
plumes
primarily
overlaying
the
marine
stratocumulus‐to‐cumulus
transition,
complexity
atmosphere
over
southeast
Atlantic
Ocean
is
difficult
to
represent
in
models.
Biases
with
respect
height
plume
and
excessive
subsidence
have
previously
been
documented
MERRA‐2.
This
paper
further
diagnoses
these
biases,
addresses
unreasonable
region
currently
simulated
Goddard
Earth
Observing
System
(GEOS)
model
during
first
deployment
ORACLES
campaign
September
2016.
Our
study
based
on
simulations
where
meteorological
state
constrained
GEOS‐based
MERRA‐2
reanalysis,
as
well
ERA5,
using
so‐called
replay
technique.
Free
running
GEOS
show
that
begins
land
such
transported
easterly
jet
reaches
a
strip
complex
terrain
forced
downward;
similar
behavior
can
be
found
reanalysis.
has
somewhat
reduced
improved
parameterizations
recent
versions
model.
However,
any
meteorology,
even
those
GEOS,
suffer
from
same
subsidence.
An
additional
set
which
was
free‐running
used
quantify
role
itself
adjusting
profile
vertical
motion.
While
self‐lofting
reduces
ocean,
magnitude
its
impact
only
fraction
bias
Language: Английский
ORACLES Campaign, September 2016: Inversion of HSRL-2 Observations with Regularization Algorithm into Particle Microphysical Parameters and Comparison to Airborne In-Situ Data
Atmosphere,
Journal Year:
2023,
Volume and Issue:
14(11), P. 1661 - 1661
Published: Nov. 7, 2023
We
present
microphysical
properties
of
pollution
layers
observed
with
NASA
Langley
Research
Center’s
airborne
high-spectral-Resolution
lidar
(HSRL-2).
The
data
obtained
by
HSRL-2
consist
vertical
profiles
three
backscatter
coefficients
(β)
taken
at
355,
532
and
1064
nm
two
extinction
(α)
measured
355
nm.
In
our
study
we
(1)
inverted
the
3β
+
2α
into
particle
size
distributions
a
regularization
algorithm,
subsequently
computed
(2)
number
concentration
(3)
single-scattering
albedo
for
four
measurement
profiles.
carried
out
first
comparison
to
same
characteristics
in-situ
instruments.
instruments
were
flown
aboard
P-3B
aircraft,
which
followed
flight
track
aircraft
ER-2
that
HSRL-2.
found
good
agreement
co-located
(space
time)
products,
degree
reliability
reaching
90%.
A
more
detailed
on
larger
dataset
needs
be
in
future
work
(a)
obtain
important
correction
factors,
(b)
influence
different
light-scattering
models
inversion
results,
(c)
identify
sources
retrieval
uncertainties.
Language: Английский