Humidity estimate for the middle Eocene Arctic rain forest

A. Hope Jahren, Leonel Sternberg

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

The exquisite preservation of fossilized Metasequoia trees that grew near 80°N latitude during the middle Eocene (ca. 45 Ma) in Nunavut, Canada, allowed for δD and δ18O analyses of cellulose, techniques previously restricted to wood <30,000 yr old. From the isotopic results, we determined that the middle Eocene Arctic atmosphere contained ∼2x the water found in the region's atmosphere today. This water vapor contributed to a middle Eocene greenhouse effect that insulated the polar region during dark polar winters.

Original languageEnglish
Pages (from-to)463-466
Number of pages4
JournalGeology
Volume31
Issue number5
DOIs
StatePublished - May 1 2003

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humidity
Eocene
atmosphere
greenhouse effect
polar region
cellulose
water vapor
winter
rain forest
water

Keywords

  • Arctic
  • Cellulose
  • Eocene
  • Humidity
  • Metasequoia
  • Stable isotope

ASJC Scopus subject areas

  • Geology

Cite this

Humidity estimate for the middle Eocene Arctic rain forest. / Jahren, A. Hope; Sternberg, Leonel.

In: Geology, Vol. 31, No. 5, 01.05.2003, p. 463-466.

Research output: Contribution to journalArticle

Jahren, A. Hope ; Sternberg, Leonel. / Humidity estimate for the middle Eocene Arctic rain forest. In: Geology. 2003 ; Vol. 31, No. 5. pp. 463-466.
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