Mega El Niño instigated the end-Permian mass extinction
Yadong Sun,
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Alexander Farnsworth,
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Michael M. Joachimski
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et al.
Science,
Journal Year:
2024,
Volume and Issue:
385(6714), P. 1189 - 1195
Published: Sept. 12, 2024
The
ultimate
driver
of
the
end-Permian
mass
extinction
is
a
topic
much
debate.
Here,
we
used
multiproxy
and
paleoclimate
modeling
approach
to
establish
unifying
theory
elucidating
heightened
susceptibility
Pangean
world
prolonged
intensified
El
Niño
events
leading
an
state.
As
atmospheric
partial
pressure
carbon
dioxide
doubled
from
about
410
860
ppm
(parts
per
million)
in
latest
Permian,
meridional
overturning
circulation
collapsed,
Hadley
cell
contracted,
Niños
intensified.
resultant
deforestation,
reef
demise,
plankton
crisis
marked
start
cascading
environmental
disaster.
Reduced
sequestration
initiated
positive
feedback,
producing
warmer
hothouse
and,
consequently,
stronger
Niños.
compounding
effects
elevated
climate
variability
mean
state
warming
led
catastrophic
but
diachronous
terrestrial
marine
losses.
Language: Английский
Polycyclic aromatic hydrocarbons (PAHs) evidence for frequent combustion events on land during the Permian–Triassic transition in Northwest China
Palaeogeography Palaeoclimatology Palaeoecology,
Journal Year:
2024,
Volume and Issue:
642, P. 112152 - 112152
Published: March 15, 2024
Language: Английский
Contrasting dynamics of marine bacterial-algal communities between the two main pulses of the Late Ordovician Mass Extinction
Earth and Planetary Science Letters,
Journal Year:
2024,
Volume and Issue:
645, P. 118956 - 118956
Published: Aug. 27, 2024
Language: Английский
Sedimentary 17O‐Nitrate Evidence for Phanerozoic Aridity and Humidity Oscillations in South China
Geophysical Research Letters,
Journal Year:
2024,
Volume and Issue:
51(20)
Published: Oct. 26, 2024
Abstract
Climate
changes
are
known
to
have
been
a
key
regulator
of
the
biodiversity
in
Earth's
history.
However,
dry‐humid
degrees
and
alternating
patterns
throughout
Phanerozoic
remain
largely
unconstrained.
In
this
study,
we
report
high
contents
(2.4
±
3.8
mg
N
kg
−1
)
17
O
anomalies
(11.0
7.4‰)
nitrate
(NO
3
−
early
Cambrian
black
shale
from
South
China,
likely
caused
by
atmospheric
NO
intrusion
under
dry
climates
that
followed
tectonic
uplift.
By
developing
new
methods
quantify
aridity
indices
(AI,
0.06
0.08)
combination
with
observational
data
paleoclimate
models,
reconstructed
historical
AI
variations.
Our
analyses
revealed
three
significant
dry‐to‐humid
transitions
which
include
Cambrian‐Ordovician
Silurian‐Permian,
Permian‐Triassic
boundary
middle
Triassic‐early
Jurassic,
Jurassic‐Paleogene
Neogene.
This
study
quantitatively
unlocked
climate
offering
important
evidence
for
understanding
co‐evolution
ecological
climatic
systems
Language: Английский