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GEOPHYSICAL RESEARCH LETTERS,
VOL. 24, NO. 18,
PAGES 2319–2322,
1997
The Continuing Search for an Anthropogenic Climate Change Signal: Limitations of Correlation-Based Approaches
David R. Legates
Louisiana State University, Baton Rouge, Louisiana
Robert E. Davis
University of Virginia, Charlottesville, Virginia
Abstract
Several recent studies claim to have found evidence of large-scale climate changes that were attributed to human influences.
These assertions are based on increases in correlation over time between general circulation model prognostications and observations
as derived from a centred pattern correlation statistic. We argue that the results of such studies are inappropriate because
of limitations and biases in these statistics which leads us to conclude that the results of many studies employing these
statistics may be erroneous and, in fact, show little evidence of a human fingerprint in the observed records.
Received 24
March
1997;
accepted 29
July
1997.
Subscriber Access to Full Article (Nonsubscribers may purchase for $9.00, Includes print PDF)
Citation: Legates, D. R., and R. E. Davis
(1997),
The Continuing Search for an Anthropogenic Climate Change Signal: Limitations of Correlation-Based Approaches,
Geophys. Res. Lett.,
24(18),
2319–2322.
Copyright 1997 by the American Geophysical Union.
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