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A spatiotemporal analysis of US station temperature trends over the last century

Capparelli, V., Franzke, C., Vecchio, A., Freeman, M. P., Watkins, Nicholas W. and Carbone, V. (2013) A spatiotemporal analysis of US station temperature trends over the last century. Journal of Geophysical Research: Atmospheres, 118 (14). pp. 7427-7434. ISSN 2169-897X

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Identification Number: 10.1002/jgrd.50551


This study presents a nonlinear spatiotemporal analysis of 1167 station temperature records from the United States Historical Climatology Network covering the period from 1898 through 2008. We use the empirical mode decomposition method to extract the generally nonlinear trends of each station. The statistical significance of each trend is assessed against three null models of the background climate variability, represented by stochastic processes of increasing temporal correlation length. We find strong evidence that more than 50% of all stations experienced a significant trend over the last century with respect to all three null models. A spatiotemporal analysis reveals a significant cooling trend in the South-East and significant warming trends in the rest of the contiguous U.S. It also shows that the warming trend appears to have migrated equatorward. This shows the complex spatiotemporal evolution of climate change at local scales.

Item Type: Article
Official URL:
Additional Information: © 2013 American Geophysical Union
Divisions: Centre for Analysis of Time Series
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
Date Deposited: 13 Sep 2013 08:07
Last Modified: 20 Jul 2021 00:59
Funders: Natural Environment Research Council

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