International Journal of Climatology,
Journal Year:
2021,
Volume and Issue:
42(1), P. 225 - 249
Published: June 6, 2021
Abstract
This
study
analyses
long‐term
changes
in
drought
indices
(Standardised
Precipitation
Index—SPI,
Standardised
Precipitation–Evapotranspiration
Index—SPEI)
at
1
and
3
months
scales
182
stations
11
central
eastern
European
countries
during
1949–2018.
For
comparative
purposes,
the
necessary
atmospheric
evaporative
demand
(AED)
to
obtain
SPEI
was
calculated
using
two
methods,
Hargreaves‐Samani
(SPEIH)
Penman‐Monteith
(SPEIP).
The
results
show
some
relevant
tendencies
indices.
Statistically
significant
increase
SPI
cold
season
(November–March),
reflecting
precipitation
increase,
found
northern
part
of
region,
Estonia,
Latvia,
Lithuania,
Belarus
Poland.
In
rest
domain,
a
weak
mostly
insignificant
decrease
prevailed
winter.
Summer
(June–August)
is
characterized
by
opposite
sign.
An
observed
north,
while
clear
SPEI,
drying
trend,
typical
for
southern
regions:
Czech
Republic,
Slovakia,
Hungary,
Romania,
Moldova
A
general
tendency
revealed
also
April,
which
statistically
over
wide
area
Republic
Increasing
trends
September
October
were
detected
Hungary.
use
instead
generally
enhances
trends.
Scientific Reports,
Journal Year:
2020,
Volume and Issue:
10(1)
Published: Aug. 6, 2020
Abstract
Since
the
spring
2018,
a
large
part
of
Europe
has
been
in
midst
record-setting
drought.
Using
long-term
observations,
we
demonstrate
that
occurrence
2018–2019
(consecutive)
summer
drought
is
unprecedented
last
250
years,
and
its
combined
impact
on
growing
season
vegetation
activities
stronger
compared
to
2003
European
suite
climate
model
simulation
outputs,
underpin
role
anthropogenic
warming
exacerbating
future
risk
such
consecutive
event.
Under
highest
Representative
Concentration
Pathway,
(RCP
8.5),
notice
seven-fold
increase
droughts,
with
additional
40
(
$$\pm
\,
5$$
±5
)
million
ha
cultivated
areas
being
affected
by
during
second
half
twenty-first
century.
The
significantly
reduced
under
low
medium
scenarios
2.6
RCP
4.5),
suggesting
an
effective
mitigation
strategy
could
aid
reducing
droughts.
Philosophical Transactions of the Royal Society A Mathematical Physical and Engineering Sciences,
Journal Year:
2022,
Volume and Issue:
380(2238)
Published: Oct. 23, 2022
Drought
is
one
of
the
most
difficult
natural
hazards
to
quantify
and
divided
into
categories
(meteorological,
agricultural,
ecological
hydrological),
which
makes
assessing
recent
changes
future
scenarios
extremely
difficult.
This
opinion
piece
includes
a
review
scientific
literature
on
topic
analyses
trends
in
meteorological
droughts
by
using
long-term
precipitation
records
different
drought
metrics
evaluate
role
global
warming
processes
hydrological
severity
over
last
four
decades,
during
sharp
increase
atmospheric
evaporative
demand
(AED)
has
been
recorded.
Meteorological
do
not
show
any
substantial
at
scale
least
120
years,
but
an
agricultural
seems
emerge
as
consequence
AED.
Lastly,
this
study
evaluates
projections
from
earth
system
models
focuses
important
aspects
that
need
be
considered
when
evaluating
changing
climate,
such
use
uncertainty
modelling
approaches.
article
part
Royal
Society
Science+
meeting
issue
‘Drought
risk
Anthropocene’.
Scientific Data,
Journal Year:
2021,
Volume and Issue:
8(1)
Published: Aug. 24, 2021
Challenges
exist
for
assessing
the
impacts
of
climate
and
change
on
hydrological
cycle
local
regional
scales,
in
turn
water
resources,
food,
energy,
natural
hazards.
Potential
evapotranspiration
(PET)
represents
atmospheric
demand
water,
which
is
required
at
high
spatial
temporal
resolutions
to
compute
actual
thus
close
balance
near
land
surface
many
such
applications,
but
there
are
currently
no
available
high-resolution
datasets
PET.
Here
we
develop
an
hourly
PET
dataset
(hPET)
global
0.1°
resolution,
based
output
from
recently
developed
ERA5-Land
reanalysis
dataset,
over
period
1981
present.
We
show
how
hPET
compares
other
datasets,
common
spatiotemporal
time
frames,
with
respect
patterns
climatology
seasonal
variations
selected
humid
arid
locations
across
globe.
provide
data
users
employ
multiple
applications
explore
diurnal
evaporative
water.
Reviews of Geophysics,
Journal Year:
2023,
Volume and Issue:
61(2)
Published: April 26, 2023
Abstract
Heat
waves
(HWs)
can
cause
large
socioeconomic
and
environmental
impacts.
The
observed
increases
in
their
frequency,
intensity
duration
are
projected
to
continue
with
global
warming.
This
review
synthesizes
the
state
of
knowledge
scientific
challenges.
It
discusses
different
aspects
related
definition,
triggering
mechanisms,
changes
future
projections
HWs,
as
well
emerging
research
lines
on
subseasonal
forecasts
specific
types
HWs.
We
also
identify
gaps
that
limit
progress
delineate
priorities
for
research.
Overall,
physical
drivers
HWs
not
understood,
partly
due
difficulties
quantification
interactions
responses
climate
change.
Influential
factors
convey
processes
at
spatio‐temporal
scales,
from
warming
large‐scale
atmospheric
circulation
regional
local
affected
area
upwind
regions.
Although
some
thermodynamic
have
been
identified,
there
is
a
lack
understanding
dynamical
aspects,
forcings
feedbacks,
changes.
hampers
attribution
trends
individual
events,
reduces
ability
provide
accurate
projections.
Sustained
observational
networks,
models
diverse
complexity,
narrative‐based
methodological
approaches
artificial
intelligence
offer
new
opportunities
toward
process‐based
interdisciplinary
Weather and Climate Extremes,
Journal Year:
2021,
Volume and Issue:
32, P. 100312 - 100312
Published: Feb. 18, 2021
The
co-occurrence
of
warm
spells
and
droughts
can
lead
to
detrimental
socio-economic
ecological
impacts,
largely
surpassing
the
impacts
either
or
alone.
We
quantify
changes
in
number
compound
from
1979
2018
Mediterranean
Basin
using
ERA5
data
set.
analyse
two
types
events:
1)
season
events,
which
are
extreme
absolute
terms
May
October
2)
year-round
deseasonalised
relative
respective
time
year.
events
increases
significantly
especially
increasing
strongly
–
with
an
annual
growth
rates
3.9
(3.5)
%
for
(deseasonalised)
4.6
(4.4)
–,
whereas
change
is
more
ambiguous
depending
on
applied
definition.
Therefore,
rise
primarily
driven
by
temperature
not
lack
precipitation.
months
July
August
show
highest
occur
spring
early
summer.
This
increase
potentially
have
a
significant
impact
functioning
ecosystems
as
this
peak
phase
ecosystem
productivity
vital
phenophase.
