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(Article of periodic en Anglais - 1980)

Document title

On the design of paleoenvironmental data networks for estimating large-scale patterns of climate

Authors(s) and Affiliation(s)

KUTZBACH J. E. ; GUETTER P. J. ;

Abstract

Guidelines are determined for the spatial density and location of climatic variables (temperature and precipitation) that are appropriate for estimating the continental-to hemispheric-scale pattern of atmospheric circulation (sea-level pressure). Because instrumental records of temperature and precipitation simulate the climatic information that is contained in certain paleoenvironmental records (tree-ring, pollen, and written-documentary records, for example), these guidelines provide useful sampling strategies for reconstructing the pattern of atmospheric circulation from paleoenvironmental records. The statistical analysis uses a multiple linear regression model. The sampling strategies consist of changes in site density (from 0.5 to 2.5 sites per million square kilometers) and site location (from western North American sites only to sites in Japan, North America, and western Europe) of the climatic data. The results showed that the accuracy of specification of the pattern of sea-level pressure: 1. is improved if sites with climatic records are spread as uniformly as possible over the area of interest| 2. increases with increasing site density at least up to the maximum site density used in this study| 3. is improved if sites cover an area that extends considerably beyond the limits of the area of interest.

Source

Article of periodic

published at : Quaternary research New York

Editor :

Millesime : 1980, vol. 14, no2 [pp. 169-187]

Bibliographic references : 16réf.

Language

Anglais

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