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Reconciling centennial-scale climate variation during the last millennium in reconstructions and simulations

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With some thoughts on the usefulness of climate history

Our two principal sources of climate variability over the past millennium and beyond are proxy-based reconstructions and model simulations. Though the two share broad agreement, model simulations typically possess less centennial-scale variability than reconstructions. I will provide an overview of the discrepancies between temperature and hydroclimate reconstructions, and last millennium simulations of the same two parameters, and discuss how the differences might be reconciled. Lastly, I will give a few examples in the usefulness of climate history to understand both ongoing climate change and past human history.

Dr. Fredrik Charpentier Ljungqvist is a Swedish historian and palaeoclimatologist from Stockholm University and is at present Visiting Researcher at the Department of Geography, University of Cambridge.

This talk is part of the Climate and Environmental Dynamics - Department of Geography series.

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