Gases in ice cores

Michael Bender, Todd Sowers, Edward Brook

Research output: Contribution to journalArticle

35 Scopus citations

Abstract

Air trapped glacial ice offers a means of reconstructing variations in the concentrations of atmospheric gases over time scales ranging from anthropogenic (last 200 yr) to glacial/interglacial (hundreds of thousands of years). In this paper, we review the glaciological processes by which air is trapped in the ice and discuss processes that fractionate gases in ice cores relative to the contemporaneous atmosphere. We then summarize concentration- time records for CO2 and CH4 over the last 200 yr. Finally, we summarize concentration-time records for CO2 and CH4 during the last two glacial- interglacial cycles, and their relation to records of global climate change.

Original languageEnglish (US)
Pages (from-to)8343-8349
Number of pages7
JournalProceedings of the National Academy of Sciences of the United States of America
Volume94
Issue number16
DOIs
Publication statusPublished - Aug 5 1997

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All Science Journal Classification (ASJC) codes

  • General

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