Causes of ice-age intensification across the Mid-Pleistocene Transition

• Published in: Proceedings of the National Academy of Sciences
• Main Authors: Chalk, Thomas, Hain, Mathis, Foster, Gavin, Rohling, Eelco, Sexton, Philip F., Badger, Marcus P.S., Cherry, Soraya, Hasenfratz, Adam, Haug, G.H., Jaccard, S.L., Martínez-García, Alfredo, Palike, Heiko, Pancost, Richard D., Wilson, Paul A.
• Format: Article in Journal/Newspaper
• Language: English
• Published: 2017
• Subjects: Southern Ocean; Kya; Ice Sheet
• Online Access: https://eprints.soton.ac.uk/415926/; https://eprints.soton.ac.uk/415926/1/REVISION2_PNAS_MS_ULTIMO_length_2.docx; https://eprints.soton.ac.uk/415926/2/REVISION2_PNAS_MS_ULTIMO_supplement_length.docx

During the Mid-Pleistocene Transition (MPT; 1,200–800 kya), Earth’s orbitally paced ice age cycles intensified, lengthened from ∼40,000 (∼40 ky) to ∼100 ky, and became distinctly asymmetrical. Testing hypotheses that implicate changing atmospheric CO2 levels as a driver of the MPT has proven difficu...