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Home / Science / The dinosaur-dead Chicxulub asteroid has been heating the earth for a year

The dinosaur-dead Chicxulub asteroid has been heating the earth for a year



Asteroid Chicxulub – which caused the extinction of dinosaurs – spurred a long era of global warming when it struck the earth 65 million years ago with a rapid temperature rise of 5 degrees Celsius, lasting about 1 million years (19659002) The monumental event is a rare event in which the systems of the earth were more disturbed than what emanates from human activity today.

It provides valuable insights into what can happen in the event of sudden extreme environmental changes

A topic under discussion

The aftermath of the Chicxulub strike remains controversial, with some scientists advocating that soot in the atmosphere blocks the sun sufficiently to push the global slowdown. Others suspect that carbon is released from the atmosphere The earth's crust into the atmosphere at impact of the asteroid and the carbon from forest fires had a warming effect.

To better understand how the temperature changed during the flight Researchers from the University of Missouri and the University of Colorado Boulder in the US analyzed a robust collection of well-preserved, grain-sized remnants of fangs, scales and bones from a Tunisian site

These samples contain oxygen isotope signatures indicating the temperature at the time the related animal was living.

Samples collected

Researchers were able to collect samples from sediments that outlasted the time to Chicxulub impact

Based on their analysis, they suggest that global temperatures are around 5 degrees Celsius and about 1

million years after impact, they could not cool down to their previous levels, with warming and the duration of warming very close to carbon dioxide levels. Some types of analysis have estimated that they were emitted during the same period.


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