Asteroid impact plunged dinosaurs into catastrophic 'winter'
By Jonathan Amos, BBC, October 31, 2017
http://www.bbc.com/news/science-environment-41825471
Dinosaur-killing asteroid impact cooled Earth's climate more
than previously thought. PhysOrg, October 31, 2017
https://phys.org/news/2017-10-dinosaur-killing-asteroid-impact-cooled-earth.html
The paper is:
Natalia Artemieva et al, 2017, Quantifying the Release of
Climate-Active Gases by Large Meteorite Impacts With a Case
Study of Chicxulub. Geophysical Research Letters (2017). DOI:
10.1002/2017GL074879
http://onlinelibrary.wiley.com/doi/10.1002/2017GL074879/abstract
A related paper is:
Pierazzo, E. and Artemieva, N., 2012. Local and global
environmental effects of impacts on Earth. Elements, 8(1), pp.55-60.
http://users.unimi.it/paleomag/geo2/Pierazzo&Artemieva2012.pdf
Yours,
Paul H.
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