Dominant 100,000-year precipitation cyclicity in a late Miocene lake from northeast Tibet

Junsheng Nie, Carmala Garzione, Qingda Su, Qingsong Liu, Rui Zhang, David Heslop, Cristian Necula, Shihong Zhang, Yougui Song, Zeng Luo

Research output: Contribution to journalArticlepeer-review

79 Scopus citations

Abstract

East Asian summer monsoon (EASM) precipitation received by northern China over the past 800 thousand years (ky) is characterized by dominant 100-ky periodicity, mainly attributed to CO2 and Northern Hemisphere insolation–driven ice sheet forcing. We established an EASM record in the Late Miocene from lacustrine sediments in the Qaidam Basin, northern China, which appears to exhibit a dominant 100-ky periodicity similar to the EASM records during the Late Quaternary. Because evidence suggests that partial or ephemeral ice existed in the Northern Hemisphere during the Late Miocene, we attribute the 100-ky cycles to CO2 and Southern Hemisphere insolation–driven Antarctic ice sheet forcing. This indicates a >6–million year earlier onset of the dominant 100-ky Asian monsoon and, likely, glacial and CO2 cycles and may indicate dominant forcing of Northern Hemisphere climate by CO2 and Southern Hemisphere ice sheets in a warm world.

Original languageEnglish (US)
Article numbere1600762
JournalScience Advances
Volume3
Issue number3
DOIs
StatePublished - Mar 2017
Externally publishedYes

ASJC Scopus subject areas

  • General

Fingerprint

Dive into the research topics of 'Dominant 100,000-year precipitation cyclicity in a late Miocene lake from northeast Tibet'. Together they form a unique fingerprint.

Cite this