Abstract.
Many
studies
using
climatological
data
of
liquid
water
path
(LWP)
and
droplet
concentration
(Nd)
find
an
inverted-V
relationship,
where
LWP
increases
then
decreases
with
Nd.
Our
findings
suggest
that
while
these
responses
to
changes
in
Nd
align
proposed
causal
mechanisms,
such
as
entrainment
evaporation
feedback
precipitation
suppression,
the
is
primarily
driven
by
co-variability
between
This
arises
from
meteorological
conditions
microphysical
processes,
each
independently
affecting
opposite
directions.
We
further
demonstrate
relationship
reflects
evolution
Stratocumulus
clouds
(Sc).
Therefore,
background
anthropogenic
should,
principle,
be
manifested
across
entire
Sc
climatology
along
its
evolution.
Instantaneous
response
derived
ship
tracks,
or
other
similar
natural
experiments,
may
therefore
not
accurately
represent
response.
because
local
perturbations
plausible
Nd,
which
varies
depending
on
cloud
state
Atmospheric chemistry and physics,
Journal Year:
2024,
Volume and Issue:
24(23), P. 13403 - 13412
Published: Dec. 5, 2024
Abstract.
Aerosol–cloud
interactions
modulate
the
role
of
clouds
in
Earth's
climate.
We
derive,
evaluate,
and
apply
a
simple
model
to
understand
aerosol-mediated
cloud
water
adjustments
stratocumulus
based
on
only
two
prognostic
equations
for
integrated
L
droplet
number
concentration
N.
The
is
solved
numerically
analytically
agrees
well
with
documented
large-eddy-simulation
data
satellite
retrievals.
A
tight
relationship
between
at
low
high
N
found,
revealing
influence
non-precipitation
processes
(primarily
entrainment)
precipitating
clouds.
Furthermore,
it
shown
that
non-precipitating
tend
be
positively
biased
by
external
or
perturbations,
while
are
barely
susceptible.
By
deliberately
reducing
complexity
underlying
system,
this
study
constitutes
way
forward
facilitate
process-level
understanding
adjustments.
Abstract.
Many
studies
using
climatological
data
of
liquid
water
path
(LWP)
and
droplet
concentration
(Nd)
find
an
inverted-V
relationship,
where
LWP
increases
then
decreases
with
Nd.
Our
findings
suggest
that
while
these
responses
to
changes
in
Nd
align
proposed
causal
mechanisms,
such
as
entrainment
evaporation
feedback
precipitation
suppression,
the
is
primarily
driven
by
co-variability
between
This
arises
from
meteorological
conditions
microphysical
processes,
each
independently
affecting
opposite
directions.
We
further
demonstrate
relationship
reflects
evolution
Stratocumulus
clouds
(Sc).
Therefore,
background
anthropogenic
should,
principle,
be
manifested
across
entire
Sc
climatology
along
its
evolution.
Instantaneous
response
derived
ship
tracks,
or
other
similar
natural
experiments,
may
therefore
not
accurately
represent
response.
because
local
perturbations
plausible
Nd,
which
varies
depending
on
cloud
state
