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Spatial and temporal characteristics of climate in medieval times revisited

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Díaz, Henry E. and Trigo, Ricardo and Hughes, Malcolm K.. and Mann, Michael E. and Xoplaki, Elena and Barriopedro Cepero, David (2011) Spatial and temporal characteristics of climate in medieval times revisited. Bulletin of the American Meteorological Society, 92 (11). pp. 1487-1500. ISSN 0003-0007

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Official URL: http://dx.doi.org/10.1175/BAMS-D-10-05003.1



Abstract

Developing accurate reconstructions of past climate regimes and enhancing our understanding of the causal factors that may have contributed to their occurrence is important for a number of reasons; these include improvements in the attribution of climate change to natural and anthropogenic forcing, gaining a better appreciation for the range and magnitude of low-frequency variability and previous climatic regimes in comparison with the modern instrumental period, and developing greater insights into the relationship between human society and climatic changes. This paper examine up-to-date evidence regarding the characteristics of the climate in medieval times (A.D. 950-1400). Long and high-resolution climate proxy records reported in the scientific literature, which form the basis for the climate reconstructions, have greatly expanded in the last few decades, with greater numbers of sites that now cover more areas of the globe. Some comparisons with the modern climate record and discussion of potential mechanisms associated with the patterns of medieval climate are presented here, but our main goal is to provide the reader with some appreciation of the richness of past natural climate variability in terms of its spatial and temporal characteristics.


Item Type:Article
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© 2011 American Meteorological Society. We gratefully acknowledge the support of the Climate Program Office at the U.S. National Oceanic and Atmospheric Administration, and the International Geosphere Biosphere, Past Global Changes (PAGES) Program Office in Bern, Switzerland. We are also grateful for the support of the Luso-American Foundation (FLAD), the Portuguese Foundation for Science and Technology, and the Institut Dom Luiz, University of Lisbon for their help in conducting the symposium that set the background for this assessment. Ricardo Trigo and David Barriopedro received support from Portuguese Foundation for Science and Technology (FCT) with project MEDIATIC (PTDC/AAC-CLI/103361/208). We also acknowledge the helpful reviews provided by R. Seager and an anonymous reviewer and thank H. Goosse for kindly making available to us one of the figures.

Uncontrolled Keywords:North-Atlantic oscillation; Surface-temperature variations; Solar-cycle modulation; Past 1000 years; Last millennium; Tropical Pacific; Warm period; Transient simulations; Volcanic-eruptions; American drought
Subjects:Sciences > Physics > Astrophysics
Sciences > Physics > Astronomy
Sciences > Physics > Atmospheric physics
ID Code:24284
Deposited On:21 Jan 2014 10:06
Last Modified:10 Dec 2018 15:05

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