PRISM 8°x10° Northern Hemisphere Paleoclimate Reconstruction: Digital Data

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Description The PRISM 8°x10° data set represents several years of investigation by PRISM (Pliocene Research, Interpretation, and Synoptic Mapping) Project members. One of the goals of PRISM is to produce time-slice reconstructions of intervals of warmer than moder
Originators Barron, John A.; Cronin, Thomas M.; Dowsett, Harry J.; Fleming, R. Farley; Holtz, Thomas R., Jr.; Ishman, Scott E.; Poore, Richard Z.; Thompson, Robert S.; and Willard, Debra A.
Publication U.S. Geological Survey Open-File Report 94-281

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Overview of attributes

This reconstruction of middle-Pliocene climate is organized as
a series of grids representing different environmental
attributes.  The grids are designed for use with the GISS
Model II atmospheric general circulation model (GCM) using an
8°x10° resolution (Hansen et al., 1983).  Following grid cell
by grid cell, land versus ocean allocations, winter and summer
sea ice coverage of ocean areas are assigned and then winter
and summer sea surface temperatures are assigned to open ocean
areas.  Average land ice cover is recorded for land areas and
then land areas not covered by ice are assigned proportions of
six vegetation or land cover categories modified from Hansen
et al. (1983).

Dowsett, H., Thompson, R., Barron, J., Cronin, T., Fleming, F., Ishman, S., Poore, R., Willard, D., and Holtz, T. Jr., Joint investigations of the Middle Pliocene climate I: PRISM paleoenvironmental reconstructions: Global and Planetary Change, v. 9, p. 169-175.