Drying in the Middle East during Northern Hemisphere cold events of the early glacial period

Stacy Carolin, Vasile Ersek, William Roberts, Richard Walker, Gideon M. Henderson

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Few paleoclimate records exist to assess the central Middle East’s response to natural forcing beyond the instrumental record. Here we present a multi-proxy stalagmite-based climate reconstruction from Iran’s semi-arid northeast that spans 100-70 thousand years before present(ka). During severe cold (stadial) events in the North Atlantic at ≈88, 77, and 73 ka, stalagmite trace-element data indicate anomalously dry periods at this location. Stadial event increases in the stalagmite oxygen isotopes mirror those in a published Iranian stalagmite 800 km to the west. A global climate model simulates drying across the Middle East region in response to stadial event forcing, in agreement with oxygen isotope enrichments in both Iranian records, caused by a smaller fractional loss of moisture on the trajectory upstream. The paleoproxies and model experiments are consistent in indicating a drier Middle East climate during the cold North Atlantic stadials.
Original languageEnglish
Pages (from-to)14003-14010
JournalGeophysical Research Letters
Volume46
Issue number23
Early online date4 Dec 2019
DOIs
Publication statusPublished - 16 Dec 2019

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