Paleoclimate and vegetation of the Last Glacial Cycles in Jerusalem from a Speleothem Record

Paleoclimate and vegetation of the Last Glacial Cycles in Jerusalem from a Speleothem Record A speleothem isotopic record taken from Jerusalem is used to reconstruct regional climate over the last 170,000 years. Glacial periods in Jerusalem were generally cooler and wetter than the present climate. Stage 5e in the desert margin of Jerusalem was extremely unstable, dry, and warm, and instability persisted throughout the transition to glacial conditions. The climate after stage 5e became gradually cooler and wetter over a 20,000‐year interval and did not recover to interglacial conditions in stages 5c and 5a. The δ13C varied by up to 12‰, from glacial (stages 6, 4, 3, 2) values of −10 to −12‰ that reflect dense C3 vegetation above the studied cave, and up to 0‰ in early stage 5 when there was probably complete loss of vegetation. The climatic instability during interglacial periods is much larger than during glacial periods, and glacial/interglacial transitions do not behave the same in each climatic cycle in this region. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Global Biogeochemical Cycles Wiley

Paleoclimate and vegetation of the Last Glacial Cycles in Jerusalem from a Speleothem Record

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Publisher
Wiley
Copyright
Copyright © 2000 by the American Geophysical Union.
ISSN
0886-6236
eISSN
1944-9224
D.O.I.
10.1029/1999GB001245
Publisher site
See Article on Publisher Site

Abstract

A speleothem isotopic record taken from Jerusalem is used to reconstruct regional climate over the last 170,000 years. Glacial periods in Jerusalem were generally cooler and wetter than the present climate. Stage 5e in the desert margin of Jerusalem was extremely unstable, dry, and warm, and instability persisted throughout the transition to glacial conditions. The climate after stage 5e became gradually cooler and wetter over a 20,000‐year interval and did not recover to interglacial conditions in stages 5c and 5a. The δ13C varied by up to 12‰, from glacial (stages 6, 4, 3, 2) values of −10 to −12‰ that reflect dense C3 vegetation above the studied cave, and up to 0‰ in early stage 5 when there was probably complete loss of vegetation. The climatic instability during interglacial periods is much larger than during glacial periods, and glacial/interglacial transitions do not behave the same in each climatic cycle in this region.

Journal

Global Biogeochemical CyclesWiley

Published: Sep 1, 2000

References

  • The Eastern Mediterranean paleoclimate as a reflection of regional events: Soreq Cave, Israel
    Bar‐Matthews, Bar‐Matthews; Ayalon, Ayalon; Kaufman, Kaufman; Wasserburg, Wasserburg
  • Late Pleistocene variability of the carbon isotopic composition of organic matter in the eastern Mediterranean: Monitor of changes in carbon sources and atmospheric CO 2 concentrations
    Fontugne, Fontugne; Calvert, Calvert
  • Climatic variations in the eastern Mediterranean Sea area
    Gat, Gat; Magaritz, Magaritz

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