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Magnitude and timing of temperature change in the Indo-Pacific warm pool during deglaciation

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  • Katherine Visser

    (University of South Carolina)

  • Robert Thunell

    (University of South Carolina)

  • Lowell Stott

    (University of Southern California)

Abstract

Ocean–atmosphere interactions in the tropical Pacific region have a strong influence on global heat and water vapour transport and thus constitute an important component of the climate system1,2. Changes in sea surface temperatures and convection in the tropical Indo-Pacific region are thought to be responsible for the interannual to decadal climate variability observed in extra-tropical regions1,3, but the role of the tropics in climate changes on millennial and orbital timescales is less clear. Here we analyse oxygen isotopes and Mg/Ca ratios of foraminiferal shells from the Makassar strait in the heart of the Indo-Pacific warm pool, to obtain synchronous estimates of sea surface temperatures and ice volume. We find that sea surface temperatures increased by 3.5–4.0 °C during the last two glacial—interglacial transitions, synchronous with the global increase in atmospheric CO2 and Antarctic warming, but the temperature increase occurred 2,000–3,000 years before the Northern Hemisphere ice sheets melted. Our observations suggest that the tropical Pacific region plays an important role in driving glacial—interglacial cycles, possibly through a system similar to how El Niño/Southern Oscillation regulates the poleward flux of heat and water vapour.

Suggested Citation

  • Katherine Visser & Robert Thunell & Lowell Stott, 2003. "Magnitude and timing of temperature change in the Indo-Pacific warm pool during deglaciation," Nature, Nature, vol. 421(6919), pages 152-155, January.
    • Handle: RePEc:nat:nature:v:421:y:2003:i:6919:d:10.1038_nature01297
    DOI: 10.1038/nature01297
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    Cited by:

    1. Shuai Zhang & Zhoufei Yu & Yue Wang & Xun Gong & Ann Holbourn & Fengming Chang & Heng Liu & Xuhua Cheng & Tiegang Li, 2022. "Thermal coupling of the Indo-Pacific warm pool and Southern Ocean over the past 30,000 years," Nature Communications, Nature, vol. 13(1), pages 1-9, December.
    2. Willie Soon & Sallie Baliunas & Craig Idso & Sherwood Idso & David R. Legates, 2003. "Reconstructing Climatic and Environmental Changes of the Past 1000 Years: A Reappraisal," Energy & Environment, , vol. 14(2-3), pages 233-296, May.

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