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Submission + - Asteroid That Killed Dinosaurs Caused a Worse Global Disaster Than Ever Imagined (sciencealert.com)

schwit1 writes: According to a study published Monday in Geophysical Research Letters, new computer simulations using the recently revised angle suggest the Chicxulub event released more than three times more climate-cooling sulphur gas than previously thought.

"We wanted to revisit this significant event and refine our collision model to better capture its immediate effects on the atmosphere," Joanna Morgan, a geophysicist at Imperial College London, said in an American Geophysical Union press release.

The model Morgan and her colleagues created suggests that the sulphur gas from vaporised rock and seawater could have dropped global surface temperatures by an average of nearly 47 degrees Fahrenheit (26.7 degrees Celsius) almost overnight. Such temperatures may have lasted for several years, until most of the aerosolised sulphur fell out of the sky.

But sea life may have suffered much longer. It may have taken "hundreds of years after the Chicxulub impact" for oceans to rewarm, according to the study.

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Asteroid That Killed Dinosaurs Caused a Worse Global Disaster Than Ever Imagined

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