Water Resources Research,
Год журнала:
2020,
Номер
56(7)
Опубликована: Май 28, 2020
Abstract
Globally,
phytoplankton
abundance
is
increasing
in
lakes
as
a
result
of
climate
change
and
land‐use
change.
The
relative
importance
drivers
has
been
examined
primarily
for
mesotrophic
eutrophic
lakes.
However,
oligotrophic
show
different
sensitivity
to
than
lakes,
necessitating
further
exploration
the
contribution
two
increased
abundance.
Here,
we
investigated
how
air
temperature
(a
driver
related
change)
nutrient
load
interact
alter
water
quality
Lake
Sunapee,
New
Hampshire,
USA.
We
used
long‐term
data
one‐dimensional
hydrodynamic
General
Model
(GLM)
coupled
with
Aquatic
EcoDyanmics
(AED)
modules
simulate
quality.
Over
31‐year
simulation,
summer
median
chlorophyll‐
concentration
was
positively
associated
temperature,
whereas
annual
maximum
previous
3
years
external
phosphorus
load.
Scenario
testing
demonstrated
2°C
increase
significantly
concentration,
but
not
concentration.
For
both
doubling
loads
total
nitrogen
at
same
time,
or
alone,
resulted
significant
increase.
This
study
highlights
aligning
lake
measurements
ecosystem
metrics
interest,
may
be
more
uniquely
sensitive
that
typical
due
warming
alone.
Hydrological Sciences Journal,
Год журнала:
2021,
Номер
66(8), С. 1321 - 1336
Опубликована: Май 21, 2021
This
paper
investigates
climate
change
impacts
on
the
hydrology
and
water
quality
of
Brazilian
semi-arid
reservoirs.
An
integrated
approach
coupling
climate,
hydrological
models
was
proposed.
Five
general
circulation
(GCMs)
two
future
scenarios
(SSP2-4.5
SSP5-8.5)
were
used
for
projections.
The
simulations
showed
that
uncertainty
in
forecast
significantly
impacted
outputs.
Some
revealed
a
strong
decrease
streamflow
storage
volume.
On
other
hand,
40%
multi-GCM
projections
indicated
reservoir
eutrophication.
under
SSP5-8.5
more
significant
than
those
SSP2-4.5.
results
also
drought
events
may
be
prolonged
change,
principally
at
end
21st
century
SSP5-8.5,
increase
total
phosphorus
concentration.
suggests
tropical
reservoirs
could
vulnerable
to
eutrophication
regions.
Hydrology and earth system sciences,
Год журнала:
2023,
Номер
27(3), С. 837 - 859
Опубликована: Фев. 16, 2023
Abstract.
Long-term
effects
of
climate
change
on
lakes
globally
will
include
a
substantial
modification
in
the
thermal
regime
and
oxygen
solubility
lakes,
resulting
alteration
ecosystem
processes,
habitats,
concentrations
critical
substances.
Recent
efforts
have
led
to
development
long-term
model
projections
lake
regimes
solubility.
However,
such
are
hardly
ever
confronted
with
observations
extending
over
multiple
decades.
Furthermore,
global-scale
forcing
parameters
models
present
several
limitations,
as
need
significant
downscaling.
In
this
study,
were
analyzed
four
largest
French
peri-alpine
1850–2100.
We
tested
one-dimensional
(1D)
models'
robustness
for
variations
based
up
63
years
limnological
data
collected
by
Observatory
LAkes
(OLA).
Here,
we
evaluate
possibility
mechanistic
following
evolution
shortwave
radiation
air
temperature
while
providing
realistic
seasonal
trends
other
variables
which
local-scale
downscaling
often
lacks
accuracy.
Based
approach,
MyLake,
forced
temperatures
radiations,
predicted
accurately
last
4
6
decades,
RMSE
<
1.95
∘C.
Over
previous
3
water
increased
0.46
∘C
per
decade
(±0.02
∘C)
epilimnion
0.33
(±0.06
hypolimnion.
Concomitantly
due
change,
O2
has
decreased
−0.104
mg
L−1
(±0.005
L−1)
−0.096
(±0.011
hypolimnion,
respectively.
shared
socio-economic
pathway
SSP370
Intergovernmental
Panel
Climate
Change
(IPCC),
could
face
an
increase
3.80
(±0.20
next
70
years,
accompanied
decline
1.0
(±0.1
Together,
these
results
highlight
conditions
coming
better
integration
observatories
anticipate
habitats.
Environmental Modelling & Software,
Год журнала:
2021,
Номер
143, С. 105101 - 105101
Опубликована: Май 29, 2021
Model
ensembles
have
several
benefits
compared
to
single-model
applications
but
are
not
frequently
used
within
the
lake
modelling
community.
Setting
up
and
running
multiple
models
can
be
challenging
time
consuming,
despite
many
similarities
between
existing
(forcing
data,
hypsograph,
etc.).
Here
we
present
an
R
package,
LakeEnsemblR,
that
facilitates
of
five
different
vertical
one-dimensional
hydrodynamic
(FLake,
GLM,
GOTM,
Simstrat,
MyLake).
The
package
requires
input
in
a
standardised
format
single
configuration
file.
LakeEnsemblR
formats
these
files
required
by
each
model,
provides
functions
run
calibrate
models.
outputs
compiled
into
file,
post-processing
operations
supported.
LakeEnsemblR's
workflow
standardisation
simplify
model
benchmarking
uncertainty
quantification,
improve
collaborations
scientists.
We
showcase
successful
application
for
two
lakes.
Ecological Modelling,
Год журнала:
2024,
Номер
489, С. 110621 - 110621
Опубликована: Янв. 13, 2024
Regional
climate
plays
an
important
role
on
in-lake
physical
and
biogeochemical
processes
determines
the
state
of
water
quality
ecology
lakes.
This
paper
presents
result
a
one-dimensional
numerical
modelling
lake
ice
cover,
temperature,
as
well
nutrient
phytoplankton
dynamics
in
Lake
239
(Rawson
Lake)
located
Experimental
Lakes
Area
(ELA),
Ontario,
Canada.
Using
observed
meteorological
inflow/outflow
data,
Multi-year
simulation
model
(MyLake)
was
setup
to
replicate
measured
ice-cover,
dissolved
organic
carbon,
particulate
phosphorus,
chlorophyll-a
concentrations
over
entire
depth
lake.
The
sensitivity
changes
climatic
drivers,
specifically
surface
air
temperature
wind
speed,
examined
by
incrementally
changing
input
forcing
for
speed
mapping
resulting
simulated
outputs.
results
show
that
are
generally
sensitive
they
temperature.
Simulated
variables
corresponding
projected
Global
Climate
Models
(GCMs)
under
RCP4.5
RCP8.5
emission
scenarios
reveal
general
increase
decrease
thickness
cover
duration
climate.
While
increases
at
all
depths,
shallow
epilimnion
layer
is
more
than
deeper
hypolimnion
layer,
reaching
mean
annual
change
value
+3.7
°C
RCP
8.5
2090s
compared
1990s
baseline
period.
reaches
−20
cm
scenario,
ice-cover
-47
days.
These
shown
seasonal
cycling
with
concentration
during
covered
season
December
May
up
+0.15
mg/m3
followed
open
June
November
−0.15
