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Seasonal cycle variations on the supercontinent of Pangaea

Thomas J. Crowley, William T. Hyde and David A. Short
Seasonal cycle variations on the supercontinent of Pangaea
Geology (Boulder) (May 1989) 17 (5): 457-460


The seasonal cycle of temperatures on Pangaea (early Late Permian configuration) is simulated with a two-dimensional energy-balance climate model. Results indicate that the annual range of temperatures in the Southern Hemisphere of Pangaea was considerably larger than any occurring at present. Maximum mean monthly summer temperatures are 38 degrees C; daytime highs probably exceed 45 degrees C in some regions. However, summer temperatures in polar regions are considerably lower (0-5 degrees C) and are favorable for persistence of ice in eastern Australia and glaciation in Siberia-conditions that receive some support from geologic data. These simulations suggest that very high summer temperatures and a large annual range are major features of supercontinent environments. Such conditions may have significantly influenced the distribution of terrestrial Permian biota. Our results are difficult to reconcile with postulated "equable" climates for some supercontinent configurations.

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 17
Serial Issue: 5
Title: Seasonal cycle variations on the supercontinent of Pangaea
Affiliation: Appl. Res. Corp., College Station, TX, United States
Pages: 457-460
Published: 198905
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 26
Accession Number: 1989-035119
Categories: Stratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. sketch maps
Secondary Affiliation: Tex. A&M Univ., USA, United StatesNASA, Goddard Space Flight Cent., USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 1989
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