Research Square (Research Square),
Год журнала:
2023,
Номер
unknown
Опубликована: Сен. 19, 2023
Abstract
Groundwater
is
a
critical
component
of
the
terrestrial
water
cycle,
yet
extent
and
depth
its
connections
with
other
hydrologic
components,
such
as
streamflow,
remain
unquantified.
Here,
we
conducted
backward
particle
tracking
simulation
based
on
high-resolution
integrated
modeling
across
contiguous
United
States
(CONUS).
We
quantified
lateral
length
vertical
groundwater
flow
discharged
to
streams
baseflow.
Our
results
suggest
that
may
travel
underground
almost
240km
emerge
in
stream
lengths
longer
than
50
km
are
common
North
America.
Confined
groundwater,
aquifers
typically
10–100m
below
ground
surface,
significantly
contributes
Boundaries
surface
watersheds
rarely
match
only
align
at
continental
divides.
about
one-quarter
baseflow
over
CONUS
inter-basin
water-balance
approaches
underestimate
these
quantities
due
concurrent
exportation
importation
watershed.
This
nested
nature
an
important
characteristic
determines
how
far
deep
flows
supply
streamflow.
findings
have
fundamental
significance
for
understanding
movement
interactions
components
cycle.
Water Resources Research,
Год журнала:
2025,
Номер
61(2)
Опубликована: Фев. 1, 2025
Abstract
The
notion
of
convergent
and
transdisciplinary
integration,
which
is
about
braiding
together
different
knowledge
systems,
becoming
the
mantra
numerous
initiatives
aimed
at
tackling
pressing
water
challenges.
Yet,
transition
from
rhetoric
to
actual
implementation
impeded
by
incongruence
in
semantics,
methodologies,
discourse
among
disciplinary
scientists
societal
actors.
Here,
we
embrace
“integrated
modeling”—both
quantitatively
qualitatively—as
a
vital
exploratory
instrument
advance
such
providing
means
navigate
complexity
manage
uncertainty
associated
with
understanding,
diagnosing,
predicting,
governing
human‐water
systems.
From
this
standpoint,
confront
barriers
offering
seven
focused
reviews
syntheses
existing
missing
links
across
frontiers
distinguishing
surface
groundwater
hydrology,
engineering,
social
sciences,
economics,
Indigenous
place‐based
knowledge,
studies
other
interconnected
natural
systems
as
atmosphere,
cryosphere,
ecosphere.
While
there
are,
arguably,
no
bounds
pursuit
inclusivity
representing
spectrum
human
processes
around
resources,
advocate
that
integrated
modeling
can
provide
approach
delineating
scope
through
lens
three
fundamental
questions:
(a)
What
“purpose”?
(b)
constitutes
sound
“boundary
judgment”?
(c)
are
“critical
uncertainties”
their
compounding
effects?
More
broadly,
call
for
investigating
what
warranted
“systems
complexity,”
opposed
unjustified
“computational
complexity”
when
complex
human‐natural
careful
attention
interdependencies
feedbacks,
scaling
issues,
nonlinear
dynamics
thresholds,
hysteresis,
time
lags,
legacy
effects.
Water Resources Research,
Год журнала:
2025,
Номер
61(1)
Опубликована: Янв. 1, 2025
Abstract
Flooding
is
one
of
the
most
impactful
weather‐related
natural
hazards.
Numerical
models
that
solve
two
dimensional
(2D)
shallow
water
equations
(SWE)
represent
first‐principles
approach
to
simulate
all
types
spatial
flooding,
such
as
pluvial,
fluvial,
and
coastal
their
compound
dynamics.
High
resolution
(e.g.,
()
m)
needed
in
2D
SWE
simulations
capture
flood
dynamics
accurately,
resulting
formidable
computational
challenges.
Thus,
relatively
coarser
resolutions
are
used
for
large‐scale
which
introduce
uncertainties
results.
It
unclear
how
uncertainty
associated
with
model
compares
precipitation
data
sets
assumptions
regarding
boundary
conditions
when
channelized
flows
interact
other
bodies.
In
this
study,
we
compare
these
three
sources
2017
Houston
flooding
event.
Our
results
show
mesh
have
more
significant
impacts
on
simulated
streamflow
inundation
than
choice
downstream
condition
at
watershed
outlet.
We
point
out
viability
confine
coarsening
by
using
variable
(VRM)
refines
critical
topographic
features
far
fewer
grid
cells.
Specifically,
VRM,
depths
over
refined
region
comparable
use
finest
uniform
mesh.
This
study
contributes
understanding
challenges
pathways
applying
improve
realism
large
scales.
In
hydrologic
modeling,
the
assumption
of
homogeneity
within
a
cell
averages
all
variability
finer
than
model
resolution.
This
loss
information
can
impact
model's
ability
to
accurately
represent
processes,
especially
in
highly
heterogeneous
domains.
study
quantified
this
on
surface
water
fluxes
by
comparing
outputs
high-resolution
and
coarse
applied
an
idealized
domain.
also
presented
framework
for
including
subgrid
physics
integrated
models.
Channel
width
was
used
as
representative
parameter
better
characterize
flow
cells
containing
channels.
A
new,
nonlinear
relationship
between
flux
calculated
depth
derived
based
assumed
bathymetry
known
channel
width.
incorporated
into
ParFlow,
3D
subsurface
2D
model.
scenarios
tested,
formulation
coarse-resolution
produced
peak
flows
that
only
differed
from
more
1%
11/400
never
5%.
is
substantial
improvement
baseline
model,
where
213/400
had
maximum
difference
78%.
Journal of Advances in Modeling Earth Systems,
Год журнала:
2025,
Номер
17(2)
Опубликована: Фев. 1, 2025
Abstract
Understanding
the
interactions
between
atmosphere,
land,
and
subsurface
is
fundamental
to
hydrology
critical
for
a
better
assessment
of
impacts
climate
change
human
management
on
hydrological
systems.
However,
many
land
surface
models
simplify
thereby
these
interactions.
In
this
study,
we
couple
model
Noah‐MP
included
in
NASA
Land
Information
System
(LIS)
with
integrated
hydrologic
ParFlow
(ParFlow‐LIS)
using
Earth
Modeling
Framework
(ESMF)
National
United
Operational
Prediction
Capability
(NUOPC).
This
coupling
improves
simulation
water
energy
cycle
processes
by
adding
three‐dimensional
variably
saturated
heterogeneous
flow
sophisticated
nonlinear
physics‐based
equations
as
well
advances
satellite
remote
sensing‐based
data
assimilation
surface,
benefiting
modeling
community.
We
use
High
Plains
aquifer,
located
central
States,
testbed
evaluate
coupled
ParFlow‐LIS
system.
The
new
system
accounts
effects
topographically
driven
flows
producing
more
fine‐scale
patterns
states
fluxes
than
standalone
LIS.
addition,
enables
consideration
effect
storage
evapotranspiration.
particularly
important
areas
times
dry
soils,
such
during
drought
conditions
or
presence
cone
depression
due
pumping.
Environmental Research Letters,
Год журнала:
2024,
Номер
19(3), С. 034035 - 034035
Опубликована: Фев. 15, 2024
Abstract
Drought-induced
productivity
reductions
and
tree
mortality
have
been
increasing
in
recent
decades
forests
around
the
globe.
Developing
adaptation
strategies
hinges
on
an
adequate
understanding
of
mechanisms
governing
drought
vulnerability
forest
stands.
Prescribed
reduction
stand
density
has
used
as
a
management
tool
to
reduce
water
stress
wildfire
risk,
but
processes
that
modulate
fine-scale
variations
plant
supply
demand
are
largely
missing
ecosystem
models.
We
ecohydrological
model
couples
hydraulics
with
groundwater
hydrology
examine
how
within-stand
spatial
arrangements
topography
might
mitigate
at
individual-tree
scales.
Our
results
demonstrated
thinning
generally
ameliorated
hydraulic
improved
carbon
fluxes
remaining
trees,
although
effectiveness
varied
by
climate
topography.
Variable
adjusted
intensity
based
topography-mediated
availability
achieved
higher
lower
compared
evenly-spaced
comparable
intensities.
The
from
numerical
experiments
provided
mechanistic
evidence
mediates
highlighted
need
for
explicit
consideration
heterogeneity
trees
abiotic
environments
when
designing
impacts.
