Hydrological Sciences Journal,
Journal Year:
2023,
Volume and Issue:
68(14), P. 1984 - 2008
Published: Aug. 21, 2023
ABSTRACTThis
study
presented
a
novel
paradigm
for
forecasting
12-step-ahead
monthly
precipitation
at
126
California
gauge
stations.
First,
the
satellite-based
time
series
from
Climate
Hazards
Group
InfraRed
Precipitation
with
Station
data
(CHIRPS),
TerraClimate,
ECMWF
Reanalysis
V5
(ERA5),
and
Estimation
Remotely
Sensed
Information
using
Artificial
Neural
Networks-Climate
Data
Record
(PERSIANN-CDR)
products
were
bias-corrected
historical
data.
Four
methods
tested,
quantile
mapping
(QM)
was
best.
After
pre-processing
data,
19
machine-learning
models
developed.
random
forest,
Extreme
Gradient
Boosting
(XGBoost),
extreme
gradient
boosting,
support
vector
machine,
multi-layer
perceptron,
K-nearest-neighbours
chosen
as
best
based
on
Complex
Proportional
Assessment
(COPRAS)
measurement.
hyperparameter
adjustment,
Bayesian
back-propagation
regularization
algorithm
fused
results.
The
superior
models'
predictions
considered
inputs,
target's
initial
step
labeled.
next
11
steps
each
station
followed
this
approach,
fusion
accurately
predicted
all
steps.
12th
step's
average
Nash-Sutcliffe
efficiency
(NSE),
mean
square
error
(MSE),
coefficient
of
determination
(R2),
correlation
(R)
0.937,
52.136,
0.880,
0.869,
respectively,
demonstrating
framework's
effectiveness
high
horizons
to
help
policymakers
manage
water
resources.KEYWORDS:
bias
correctionhyperparameterslong-term
predictionmachine
learning
(ML)quantile
(QM)satellite-based
Editor
A
Castellarin;
Associate
F-J.
ChangEditor
ChangDisclosure
statementNo
potential
conflict
interest
reported
by
authors.Supplementary
materialSupplemental
article
can
be
accessed
online
https://doi.org/10.1080/02626667.2023.2248112.
Cogent Engineering,
Journal Year:
2022,
Volume and Issue:
9(1)
Published: Nov. 11, 2022
The
community's
well-being
and
economic
livelihoods
are
heavily
influenced
by
the
water
level
of
watersheds.
changes
in
levels
directly
affect
circulation
processes
lakes
rivers
that
control
mixing
bottom
sediment
resuspension,
further
affecting
quality
aquatic
ecosystems.
Thus,
these
considerations
have
made
monitoring
process
essential
to
save
environment.
Machine
learning
hybrid
models
emerging
robust
tools
successfully
applied
for
monitoring.
Various
been
developed,
selecting
optimal
model
would
be
a
lengthy
procedure.
A
timely,
detailed,
instructive
overview
models'
concepts
historical
uses
beneficial
preventing
researchers
from
overlooking
potential
selection
saving
significant
time
on
problem.
recent
research
prediction
using
machines
is
reviewed
this
article
present
"state
art"
subject
provide
some
suggestions
methodologies
models.
This
comprehensive
study
classifies
into
four
types
algorithm
parameter
optimisation-based
(OBH),
pre-processing-based
(PBH),
components
combination-based
(CBH),
hybridisation
with
preprocessing-based
(HOPH);
furthermore,
it
explains
pre-processing
data
detail.
Finally,
most
popular
optimisation
methods
future
perspectives
conclusions
discussed.
MethodsX,
Journal Year:
2024,
Volume and Issue:
13, P. 102800 - 102800
Published: June 13, 2024
Drought
prediction
is
a
complex
phenomenon
that
impacts
human
activities
and
the
environment.
For
this
reason,
predicting
its
behavior
crucial
to
mitigating
such
effects.
Deep
learning
techniques
are
emerging
as
powerful
tool
for
task.
The
main
goal
of
work
review
state-of-the-art
characterizing
deep
used
in
drought
results
suggest
most
widely
climate
indexes
were
Standardized
Precipitation
Index
(SPI)
Evapotranspiration
(SPEI).
Regarding
multispectral
index,
Normalized
Difference
Vegetation
(NDVI)
indicator
utilized.
On
other
hand,
countries
with
higher
production
scientific
knowledge
area
located
Asia
Oceania;
meanwhile,
America
Africa
regions
few
publications.
Concerning
methods,
Long-Short
Term
Memory
network
(LSTM)
algorithm
implemented
task,
either
canonically
or
together
(hybrid
methods).
In
conclusion,
reveals
need
more
about
using
indices
Africa;
therefore,
it
an
opportunity
characterize
developing
countries.
Computer Modeling in Engineering & Sciences,
Journal Year:
2023,
Volume and Issue:
138(1), P. 1 - 41
Published: Sept. 19, 2023
Forecasting
river
flow
is
crucial
for
optimal
planning,
management,
and
sustainability
using
freshwater
resources.
Many
machine
learning
(ML)
approaches
have
been
enhanced
to
improve
streamflow
prediction.
Hybrid
techniques
viewed
as
a
viable
method
enhancing
the
accuracy
of
univariate
estimation
when
compared
standalone
approaches.
Current
researchers
also
emphasised
hybrid
models
forecast
accuracy.
Accordingly,
this
paper
conducts
an
updated
literature
review
applications
in
estimating
over
last
five
years,
summarising
data
preprocessing,
modelling
strategy,
advantages
disadvantages
ML
techniques,
models,
performance
metrics.
This
study
focuses
on
two
types
models:
parameter
optimisation-based
(OBH)
hybridisation
preprocessing-based
(HOPH).
Overall,
research
supports
idea
that
meta-heuristic
precisely
techniques.
It's
one
first
efforts
comprehensively
examine
efficiency
various
(classified
into
four
primary
classes)
hybridised
with
revealed
previous
applied
swarm,
evolutionary,
physics,
metaheuristics
77%,
61%,
12%,
respectively.
Finally,
there
still
room
improving
OBH
HOPH
by
examining
different
pre-processing
metaheuristic
algorithms.
Hydrology,
Journal Year:
2024,
Volume and Issue:
11(4), P. 48 - 48
Published: April 4, 2024
This
study
addresses
the
challenge
of
utilizing
incomplete
long-term
discharge
data
when
using
gridded
precipitation
datasets
and
data-driven
modeling
in
Iran’s
Karkheh
basin.
The
Multilayer
Perceptron
Neural
Network
(MLPNN),
a
rainfall-runoff
(R-R)
model,
was
applied,
leveraging
from
Asian
Precipitation—Highly
Resolved
Observational
Data
Integration
Toward
Evaluation
(APHRODITE),
Global
Precipitation
Climatology
Center
(GPCC),
Climatic
Research
Unit
(CRU).
MLPNN
trained
Levenberg–Marquardt
algorithm
optimized
with
Non-dominated
Sorting
Genetic
Algorithm-II
(NSGA-II).
Input
were
pre-processed
through
principal
component
analysis
(PCA)
singular
value
decomposition
(SVD).
explored
two
scenarios:
Scenario
1
(S1)
used
situ
for
calibration
dataset
testing,
while
2
(S2)
involved
separate
calibrations
tests
each
dataset.
findings
reveal
that
APHRODITE
outperformed
S1,
all
showing
improved
results
S2.
best
achieved
hybrid
applications
S2-PCA-NSGA-II
S2-SVD-NSGA-II
GPCC
CRU.
concludes
datasets,
properly
calibrated,
significantly
enhance
runoff
simulation
accuracy,
highlighting
importance
bias
correction
modeling.
It
is
important
to
emphasize
this
approach
may
not
be
suitable
situations
where
catchment
undergoing
significant
changes,
whether
due
development
interventions
or
impacts
anthropogenic
climate
change.
limitation
highlights
need
dynamic
approaches
can
adapt
changing
conditions.