GCM sensitivity test using increased rotation rate, reduced solar forcing and orography to examine low latitude glaciation in the Neoproterozoic

Gregory S. Jenkins, Larry A. Frakes

Research output: Contribution to journalArticle

28 Scopus citations

Abstract

During the Neoproterozoic period, most landmasses were assembled into the super-continent, Rodinia, and parts experienced glaciation in low paleolatitudes. We examine possible causes of glaciation by increasing rotation rate, reducing the solar constant and carbon dioxide concentrations for an idealized super-continent that is centered in the Northern Hemispehre tropics-subtropics. Further, we introduce a 2 km north-south mountain chain in the western regions of this super-continent. A mixed layer ocean or prescribed time varying sea surface temperatures are used in these simulations. Our results show that neither an individual factor or a combination of these factors can cool temperatures enough to bring about glaciation on the tropical super-continent. We conclude that other factors would be needed to initiate glaciation.

Original languageEnglish (US)
Pages (from-to)3525-3528
Number of pages4
JournalGeophysical Research Letters
Volume25
Issue number18
DOIs
StatePublished - Sep 15 1998

All Science Journal Classification (ASJC) codes

  • Geophysics
  • Earth and Planetary Sciences(all)

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