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Increased seasonality through the Eocene to Oligocene transition in northern high latitudes

Author

Listed:
  • James S. Eldrett

    (Shell Exploration and Production UK Ltd, 1 Altens Farm Road, Nigg, Aberdeen, AB12 3FY, UK)

  • David R. Greenwood

    (Brandon University, 270 18th Street, Brandon, Manitoba, R7A 6A9, Canada)

  • Ian C. Harding

    (School of Ocean and Earth Science, National Oceanography Centre, University of Southampton, European Way, Southampton, SO14 3ZH, UK)

  • Matthew Huber

    (Purdue Climate Change Research Center, Purdue University, 550 Stadium Mall Drive, West Lafayette, Indiana 47906, USA)

Abstract

Seasonal adjustment At about 33.5 million years ago — at the Eocene-Oligocene transition — Earth's climate switched from 'greenhouse' to 'icehouse' conditions. Continental-scale ice sheets appeared in Antarctica at about this time, together with reductions in atmospheric CO2, but, particularly for high northern latitudes, relatively little is know about what was happening to the climate at that time. To find out more about conditions in the Northern Hemisphere, Eldrett et al. analysed terrestrial spore and pollen preserved in ocean sediments in the Norwegian–Greenland Sea. They find that the coldest month mean temperatures declined by about 5 °C prior to the Eocene–Oligocene transition and that seasonality increased.

Suggested Citation

  • James S. Eldrett & David R. Greenwood & Ian C. Harding & Matthew Huber, 2009. "Increased seasonality through the Eocene to Oligocene transition in northern high latitudes," Nature, Nature, vol. 459(7249), pages 969-973, June.
    • Handle: RePEc:nat:nature:v:459:y:2009:i:7249:d:10.1038_nature08069
    DOI: 10.1038/nature08069
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    Cited by:

    1. Dimitar Dimitrov & Xiaoting Xu & Xiangyan Su & Nawal Shrestha & Yunpeng Liu & Jonathan D. Kennedy & Lisha Lyu & David Nogués-Bravo & James Rosindell & Yong Yang & Jon Fjeldså & Jianquan Liu & Bernhard, 2023. "Diversification of flowering plants in space and time," Nature Communications, Nature, vol. 14(1), pages 1-16, December.

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