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Journal of the Geological Society; 1990; v. 147; issue.5; p. 749-757;
DOI: 10.1144/gsjgs.147.5.0749
© 1990 Geological Society of London

Article

Global atmospheric circulation experiments on an Earth with polar and tropical continents

WILLIAM W. HAY1, ERIC J. BARRON2 & STARLEY L. THOMPSON3

1 Museum, Department of Geology, and Cooperative Institute for Research in Environmental Sciences, Campus Box 449, University of Colorado, Boulder, CO 80309, USA and Institut für Paläontologie und historische Geologie, Ludwig-Maximillians Universität, Richard-Wagner-Str. 10, 8000 München 2, Federal Republic of Germany
2 Earth System Science Center, 512 Deike Building, The Pennsylvania State University, University Park, PA 16802, USA
3 National Center for Atmospheric Research, PO Box 3000, Boulder, CO 80307-3000, USA

Two general circulation models forced by mean annual insolation and having an energy balance ocean have been run on an Earth with polar continents and a tropical continent. Polar continents produce strong meridional temperature gradients and a maximum hydrological cycle. A tropical continent produces the warmest planet and a minimal hydrological cycle. Both models produce more arid continents than exist today.




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