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Permian climates; evaluating model predictions using global paleobotanical data

Peter McA. Rees, Mark T. Gibbs, Alfred M. Ziegler, John E. Kutzbach and Pat J. Behling
Permian climates; evaluating model predictions using global paleobotanical data
Geology (Boulder) (October 1999) 27 (10): 891-894


The most recent global icehouse-hothouse climate transition in Earth history occurred in the Permian. Warmer polar conditions relative to today existed from the middle Permian through the Mesozoic and into the Cenozoic. We focus here on one particularly well-correlated middle Permian stage that postdated the deglaciation, the Wordian (267-264 Ma), integrating floral and lithological data to determine Wordian climates globally. Paleobotanical data provide the best means of interpreting terrestrial paleoclimates, often revealing important information in the continuum between "dry" and "wet" end-member lithological indicators such as evaporites and coals. New statistical analyses of Wordian floras worldwide have enabled a greater understanding of original vegetation patterns and prevailing climate conditions. The derived climate interpretations are compared with new Wordian atmospheric general circulation model simulations. The model matches the data well in the tropics and northern high latitudes, but predicts colder conditions in southern high latitudes. We discuss possible reasons for this discrepancy.

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 27
Serial Issue: 10
Title: Permian climates; evaluating model predictions using global paleobotanical data
Affiliation: Open University, Department of Earth Sciences, Milton Keynes, United Kingdom
Pages: 891-894
Published: 199910
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 28
Accession Number: 1999-066508
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: sketch maps
Secondary Affiliation: University of Wisconsin, USA, United StatesUniversity of Chicago, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 199922
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