Baby, it's cold outside: Climate model simulations of the effects of the asteroid impact at the end of the Cretaceous

  title={Baby, it's cold outside: Climate model simulations of the effects of the asteroid impact at the end of the Cretaceous},
  author={Julie Brugger and Georg Feulner and Stefan Petri},
  journal={Geophysical Research Letters},
  pages={419 - 427}
Sixty‐six million years ago, the end‐Cretaceous mass extinction ended the reign of the dinosaurs. Flood basalt eruptions and an asteroid impact are widely discussed causes, yet their contributions remain debated. Modeling the environmental changes after the Chicxulub impact can shed light on this question. Existing studies, however, focused on the effect of dust or used one‐dimensional, noncoupled atmosphere models. Here we explore the longer‐lasting cooling due to sulfate aerosols using a… 

Causes and Climatic Consequences of the Impact Winter at the Cretaceous‐Paleogene Boundary

Prolonged periods of low light and cold temperatures at Earth's surface are hypothesized effects of the end‐Cretaceous asteroid impact. However, debate remains about the causes and consequences of

The longtime global climatic consequences modeling of the Chicxulub asteroid impact event

  • V. Parkhomenko
  • Environmental Science
    Journal of Physics: Conference Series
  • 2021
Studies indicate the mass death of a significant number of biological groups on Earth, in particular - dinosaurs, at the end of the Cretaceous period 66 million years ago. Currently, there are two

On transient climate change at the Cretaceous−Paleogene boundary due to atmospheric soot injections

The effects of a worldwide layer of soot found at the Cretaceous−Paleogene boundary is explored and it is found that it causes near-total darkness that shuts down photosynthesis, produces severe cooling at the surface and in the oceans, and leads to moistening and warming of the stratosphere that drives extreme ozone destruction.

Quantifying the Release of Climate‐Active Gases by Large Meteorite Impacts With a Case Study of Chicxulub

Potentially hazardous asteroids and comets have hit Earth throughout its history, with catastrophic consequences in the case of the Chicxulub impact. Here we reexamine one of the mechanisms that

Modelling the Present Global Terrestrial Climatic Response Due to a Chicxulub-Type Asteroid Impact

A Chicxulub-like asteroid event occurs, on average, approximately every ~27 to 200 million years. Therefore, such an event could happen presently. Here, we simulate the climatic anomalies it may

A Pronounced Spike in Ocean Productivity Triggered by the Chicxulub Impact

There is increasing evidence linking the mass‐extinction event at the Cretaceous‐Paleogene boundary to an asteroid impact near Chicxulub, Mexico. Here we use model simulations to explore the combined

Reevaluating Links Between Meteorite Impacts and Early Cenozoic Global Warming

The Paleocene‐Eocene Thermal Maximum (PETM) and the lower Chron 29n hyperthermal event were recently proposed to have been triggered by the meteorite impacts that formed the Marquez Dome (Texas, USA;

Investigating Mesozoic Climate Trends and Sensitivities With a Large Ensemble of Climate Model Simulations

This work analyzes the most extended ensemble of equilibrium climate states simulated for evolving Mesozoic boundary conditions covering the period from 255 to 60 Ma in 5 Myr timesteps and investigates the influence of paleogeography, sea level, vegetation patterns, pCO2, solar luminosity, and orbital configuration on trends.

On impact and volcanism across the Cretaceous-Paleogene boundary

Carbon cycle modeling and paleotemperature records are used to constrain the timing of volcanogenic outgassing and found support for major out gassing beginning and ending distinctly before the impact, with only the impact coinciding with mass extinction and biologically amplified carbon cycle change.



Rapid short-term cooling following the Chicxulub impact at the Cretaceous–Paleogene boundary

It is demonstrated unambiguously that the impact at the Cretaceous–Paleogene boundary (K–Pg, ∼66 Mya) was followed by a so-called “impact winter,” which was the result of the injection of large amounts of dust and aerosols into the stratosphere and significantly reduced incoming solar radiation for decades.

Impact winter and the Cretaceous/Tertiary extinctions: results of a Chicxulub asteroid impact model.

Time Scales of Critical Events Around the Cretaceous-Paleogene Boundary

Radiometric dating establishes the mass extinction that killed the dinosaurs as synchronous with a large asteroid impact between the Cretaceous-Paleogene boundary and associated mass extinctions with the Chicxulub bolide impact to within 32,000 years.

Chicxulub and climate: radiative perturbations of impact-produced S-bearing gases.

Although the climate perturbation to the forcing appears to be relatively large, the geologic record shows no sign of a significant long-term climatic shift across the K/T boundary, which is indicative of a fast post-impact climatic recovery.

The Chicxulub Asteroid Impact and Mass Extinction at the Cretaceous-Paleogene Boundary

Records of the global stratigraphy across this boundary are synthesized to assess the proposed causes of the Cretaceous-Paleogene boundary and conclude that the Chicxulub impact triggered the mass extinction.

Impact production of C02 by the Cretaceous/Tertiary extinction bolide and the resultant heating of the Earth

EVIDENCE at the Cretaceous/Tertiary boundary suggests that the proposed 'extinction' bolide1 struck a continental or shallow marine terrane. This evidence includes: shocked quartz and feld-spar

Energy, volatile production, and climatic effects of the Chicxulub Cretaceous/Tertiary impact.

A comprehensive analysis of volatiles in the Chicxulub impact strongly supports the hypothesis that impact-generated sulfate aerosols caused over a decade of global cooling, acid rain, and disruption

Impact dust not the cause of the Cretaceous-Tertiary mass extinction

  • K. Pope
  • Environmental Science, Geology
  • 2002
Most of the 3-mm-thick globally distributed Chicxulub ejecta layer found at the Cretaceous-Tertiary (K-T) boundary was deposited as condensation droplets from the impact vapor plume. A small fraction

Climate modelling of mass-extinction events: a review

  • G. Feulner
  • Environmental Science, Geography
    International Journal of Astrobiology
  • 2009
Abstract Despite tremendous interest in the topic and decades of research, the origins of the major losses of biodiversity in the history of life on Earth remain elusive. A variety of possible causes

U-Pb geochronology of the Deccan Traps and relation to the end-Cretaceous mass extinction

U-Pb zircon geochronology is applied to Deccan rocks and it is shown that the main phase of eruptions initiated ~250,000 years before the Cretaceous-Paleogene boundary and that >1.1 million cubic kilometers of basalt erupted in ~750,000 Years.